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Thread: an inexpensive ultra-wide prime for Micro-FourThirds

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    an inexpensive ultra-wide prime for Micro-FourThirds

    I'd read about this combination on DPReview in the Micro-FourThirds Talk forum and it intrigued me: with a Panasonic Lumix 14mm f/2.5, the Sony VCL-ECU1 0.75x Wide Converter designed for the NEX 16mm lens is a near perfect fit. The converter snaps over the 14mm's lens bezel and holds reasonably securely.

    So of course I had to do a quick test to see FoV and corner-edge sharpness:

    https://dl.dropboxusercontent.com/u/...est/index.html

    Enjoy!

    G

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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    Nice idea G, thanks for posting the samples.. I wonder how it compares to Panasonics own GWC1 ?
    Granted the Sony is wider at 0.75 while the Pana is 0.79

    Its a bit strange as the top corners don't hold up quite as well as the bottom, to my eye.
    The LOTR book looks similar the the center where at the cargo label at the top seems a bit ragged?

    Conversion Lenses | PRODUCTS | LUMIX | Digital Camera | Panasonic Global

    A few reviewers I read about the GWC-1 used terms like ok. I assume it was not great. Not a lot of samples that I could find.

    Another combo I' like to try is the Sigma DP1 Merrill with the Ricoh GR 21mm wide adapter. The Ricoh lens is 49mm thread as is the Merrill so it just screws on.
    You are raising my old chestnut of a 10mm prime for m43. Something compact but high IQ. I would forego some brightness.

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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    The person I chatted with about this setup seemed to have tried the Panasonic lens and felt this was a better performing combination.

    The Oly 12mm is certainly better performance, but for the price this seems to work well. Since it's a Clip-on fit, I presume top to bottom or side to side variation is a matter of just how centered I managed to get it.

    G

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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    Thanks for this. In the past I tried to get a handle on what kind of quality either the Sony or the GWC-1 might give me, but online pics weren't very helpful, and I don't have access to either add-on lens locally. Just today I was at yet another location where I could have used something wider than my 14mm. I can't seem to justify either the 7-14 or 9-18 zooms, and aside from a de-fished 7.5mm, I'm don't know of any other economical options. I might give this a whirl.
    Best regards,
    John.
    http://jburnett.ca

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    Senior Member Tim's Avatar
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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    Quote Originally Posted by JBurnett View Post
    Thanks for this. In the past I tried to get a handle on what kind of quality either the Sony or the GWC-1 might give me, but online pics weren't very helpful, and I don't have access to either add-on lens locally. Just today I was at yet another location where I could have used something wider than my 14mm. I can't seem to justify either the 7-14 or 9-18 zooms, and aside from a de-fished 7.5mm, I'm don't know of any other economical options. I might give this a whirl.
    You are making my cry, ... this is the path I've been down with my thinking also. I am sure the 7-14 is a superb lens but I just don't want to lug the weight or size and I'd only use the 7-10 part of the zoom anyway. Its the point of m43 to reduce size and weight. I also have the 14mm, the black MIJ version and I also still find I want wider often.

    I am stuck in this lack wide prime m43 rutt because of the Zuiko 21mm f3.5 and f2 that I had in film days. The 21/f3.5 is less than the size of the 20mm Panasonic. I suppose the 12mm Olympus would suffice and its a wonderful lens but its a lot to spend and still not quite get what I want.

    As crazy as it sounds I am considering the Sony A7 so that I could team a VC21 or Zeiss 21. Hoping the IQ holds up with the wides in that instance.

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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    Godfrey

    An interesting test of just what can be done with a bit of thought and planning.

    Also pleased to see that you are also a fan of "Downton Abbey" which we know better by it's real name of Highclere Castle, which is quite close to where we live in fact!

    It is very surprising to me just how many folks from your side of the pond are fans of the series. At the last meeting of the Leica Fellowship, several members from the US were going on to visit "Downton Abbey"!
    Cheers, Dave
    www.simmondsphotography.com

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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    The series has been a runaway hit here. I was skeptical, I'm not a big television watcher and even less a soap opera follower, but one episode got me hooked on it. The writing and production are truly splendid throughout, great sense of story and history.

    Great fiction and narrative, presented well, is what it's all about. We all have to remember that about our photography too.

    G

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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    Godfrey- the Author for the series is an aristocrat and an actor, so he grew up with this sort of real life experience. In my view this is what makes it so realistic and believable! (Next episode tonight here in the UK!)
    Cheers, Dave
    www.simmondsphotography.com

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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    Thanks to Godfrey for prompting me to investigate. I ended up purchasing the Panasonic DMW-GWC1 for the 14mm, in part because it was more readily available in Canada at the time of my purchase, and in part because the on/off system seemed like a good idea.

    I haven't done any "tests", but it works a treat for some situations. In the photo below (at a Christmas Tree farm) I was standing right at the edge of the flat-bed of the truck -- there was nowhere else for me to go. In this case, the extra wide (11mm vs 14mm) made all the difference.

    There's only one problem -- I used to think that I didn't do enough of this type of shot to justify purchasing the 12mm, 7-14mm or 9-18mm. But, now that I've spent a day with an adapted 11mm, I have to admit that the extra-wide perspective can be addictive!



    Best regards,
    John.
    http://jburnett.ca
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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    Looks like the performance is good! :-)

    Quote Originally Posted by JBurnett View Post
    ...
    There's only one problem -- I used to think that I didn't do enough of this type of shot to justify purchasing the 12mm, 7-14mm or 9-18mm. But, now that I've spent a day with an adapted 11mm, I have to admit that the extra-wide perspective can be addictive!
    And that's not a bad problem to have. Having ultra-wide at your disposal is a treat.

    G

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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    Godfrey,

    I don't suppose you have a 7-14 that you could photograph on your camera so I could compare it with your widened 14mm pancake?

    I ask as I already have the 7-14 and wondered how much your solution reduces size and weight.

    And Jim,

    Is the variant you are using a firm fit or clip on like Godfey's ?

    Tony

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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    Quote Originally Posted by Tonygamble View Post
    Is the variant you are using a firm fit or clip on like Godfey's ?
    Tony, the DMW-GWC1 comes in two parts -- a base which you screw onto the lens's filter mount, and the element(s), which bayonet on to the base. The base almost looks like it would cause vignetting, but it doesn't. The base also come with caps, so you can leave it on and use it as a lens-cap when you don't have the adapter mounted. The downside is that you can't use filters with the base screwed on. NOR DOES THE WIDE ADAPTER HAVE FILTER THREADS, which is a real disappointment, but I knew that pre-purchase.

    The wide-angle adapter also has both caps, so it can be in your bag, or mounted on the lens, and you always have both the lens and adapter protected. The bayonet mount isn't exactly a bayonet -- you position and twist on, then twist off in the same direction. I was totally confused until I figured out the somewhat ambiguous directions. The mount seems nice, tight and secure. It is NOT metal, however. Long-term, it might not be the best if you were going to mount/unmount A LOT.

    There are alignment detents, but they are not easily seen in low light. However, I discovered that the word WIDE on the edge of the adapter is right where you need to align, and this helps.

    As for size, I think the combo of 14mm + GWC1 would be smaller than the 7-14mm but not substantially so.
    Best regards,
    John.
    http://jburnett.ca

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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    I have, but very seldom use, a x0.25 Super Wide Converter.

    The manufacturer mentioned is DANUBIA, but it seems to have been made in Japan.

    It mounts into the the lens filter mount in one piece.
    Dimensions are roughly the same as the 14-45 kitlens from Panasonic, and it turns this lens into a 3.5mm (circular Fish-Eye effect) to 11.25mm lens.

    Unfortunately, IQ leaves much to be desired
    But it was very cheap, and fun to use from time to time ...

    C U
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    E-M1/GH2/G1 Full Spectrum & lots of lenses
    http://www.flickr.com/photos/f6cvalk...th/9226689839/

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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    Thanks John,

    If it is about the same size as the 7-14 I'll not bother.

    Like you I love wide angle. My first digital camera, in around 2002, was a Canon zoom jobbie and I remember buying a wide angle converter (in the US as they were not yet in the UK) and having it shipped direct to our ski holiday hotel in Breckenridge.

    My first m4/3 was the G1 and I bought mine without the zoom but with a 20mm pancake and the 7-14. I took it to Argentina having only had it about three days. Daft but there was no alternative. I love the shots it takes - particularly at the 7 end.

    Tony

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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    Quote Originally Posted by Tonygamble View Post
    ..
    I don't suppose you have a 7-14 that you could photograph on your camera so I could compare it with your widened 14mm pancake?

    I ask as I already have the 7-14 and wondered how much your solution reduces size and weight.
    Sorry, I don't have one of them. I've debated buying one many times, but the one I want is the olympus ZD so that I can use it on both the E-1 and E-M1. And it's simply too expensive for the amount of use I'd get from it.

    For me, the major reason to be interested in using one of these converters is the low cost, which fits my usage well.

    G

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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    Quote Originally Posted by JBurnett View Post
    Tony, the DMW-GWC1 comes in two parts -- a base which you screw onto the lens's filter mount, and the element(s), which bayonet on to the base. The base almost looks like it would cause vignetting, but it doesn't. The base also come with caps, so you can leave it on and use it as a lens-cap when you don't have the adapter mounted. The downside is that you can't use filters with the base screwed on. NOR DOES THE WIDE ADAPTER HAVE FILTER THREADS, which is a real disappointment, but I knew that pre-purchase.

    The wide-angle adapter also has both caps, so it can be in your bag, or mounted on the lens, and you always have both the lens and adapter protected. The bayonet mount isn't exactly a bayonet -- you position and twist on, then twist off in the same direction. I was totally confused until I figured out the somewhat ambiguous directions. The mount seems nice, tight and secure. It is NOT metal, however. Long-term, it might not be the best if you were going to mount/unmount A LOT.

    There are alignment detents, but they are not easily seen in low light. However, I discovered that the word WIDE on the edge of the adapter is right where you need to align, and this helps.

    As for size, I think the combo of 14mm + GWC1 would be smaller than the 7-14mm but not substantially so.
    This sounds very interesting, I'm curious enough that I ordered one. I will compare the Panasonic vs the Sony converter on the 14mm lens.

    The nice thing about using a converter is that the little 14mm lens is actually quite a nice performer, and is so tiny and light. Even if I only use a converter rarely, having the 14mm lens is worth it.

    G

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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    "the little 14mm lens is actually quite a nice performer,"

    Indeed. I have just processed about 700 shots taken on Sunday. The 14mm looks sharper than the 25mm and the 45mm.

    Tony

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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    Quote Originally Posted by Tonygamble View Post
    the little 14mm lens is actually quite a nice performer,
    Indeed. I have just processed about 700 shots taken on Sunday. The 14mm looks sharper than the 25mm and the 45mm.
    Which 25mm and 45mm lenses are you referring to?

    I have two 25mm lenses (ZD 25mm f/2.8 and Summilux-DG 25mm f/1.4 ASPH) and there is both the M.Zuiko 45mm f/1.8 and Macro-Elmarit-DG 45mm f/2.8 ASPH OIS. I've got one of the Macro-Elmarit 45mm lenses coming in tomorrow or Thursday.

    I haven't done any specific resolution testing between the 14mm and 25mm lenses, but all three of them are pretty darn nice performers. :-)

    G

    Addendum: You piqued my curiosity so I set up the E-M1 on a tripod and photographed my bookcase again with Summilux 25, ZD 25, and Lumix G 14 lenses. Results below.
    Last edited by Godfrey; 12th November 2013 at 12:02.

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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    Mine are the Summilux and the M.Zuiko.

    I have not looked too closely. I was in a rush to get the pix on the web.
    Oklahoma Act One
    Oklahoma Act Two

    Tony
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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    Lens comparison results ...
    Brought the JPEGs and raws into Lightroom 5.3RC. Results are

    - with camera set on "Normal" rendering, the JPEG and raw in LR look virtually identical. Looks like Adobe has improved and finalized the E-M1 camera calibration profile!

    looking at .ORFs only, cropping 14mm to 25mm FoV:
    - ZD 25 shows pronounced barrel distortion compared to the other two. The 14mm has slightly more than the Summilux 25. The Summilux has very little.
    - without CA correction turned on, the Summilux shows the least. With CA turned on, virtually the same.
    - Summilux holds good sharpness even wide open (f/1.4) in the corners, but by f/2.8 it is substantially sharper. Other two lenses are almost as sharp at f/2.8. By f/5.6, all three are very good, impossible to tell apart on sharpness alone.
    - Contrast seems virtually identical for all three, from wide open all the way to fully stopped down.
    - ZD25 and G14 both stop down to f/22, Summilux stops at f/16. Diffraction losses from f/11-f/16 are very close, a little more for the 14mm.

    My evaluation summary: All three lenses are fine performers. For critical work with the ZD25 and rectilinear subjects, I'll need to do some barrel distortion corrections.

    G

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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    Quote Originally Posted by Tonygamble View Post
    Mine are the Summilux and the M.Zuiko.

    I have not looked too closely. I was in a rush to get the pix on the web.
    Oklahoma Act One
    Oklahoma Act Two

    Tony
    Lots of good photos! Hard to make definitive statements about the lens performance with three such different focal lengths and without a testing setup. But the 14mm definitely looks like it is a fine performer, regardless how how it compares to the other two!

    G

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    Subscriber Member kit laughlin's Avatar
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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    I have the 14/2.5, the 20/1.7, and the 45/2.8 and in use in the same event situation, have not noticed any difference in colour rendering or any unsharpness (and we all know how good the 20 is). I feel the cheap, plastic, and tiny 14 holds up well; good enough for me at any rate.

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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    If you want to go even wider at a low price, the Rokinon 8mm fisheye is quite sharp and can be converted to rectilinear using software. I haven't compared, but it may even be superior to adding one of these wide-angle filters. Just a suggestion!

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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    Quote Originally Posted by ggibson View Post
    If you want to go even wider at a low price, the Rokinon 8mm fisheye is quite sharp and can be converted to rectilinear using software. I haven't compared, but it may even be superior to adding one of these wide-angle filters. Just a suggestion!
    But the 14mm and the wide converter is smaller and lighter, and gives you two lenses with no software correction required. :-)

    G

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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    Quote Originally Posted by Godfrey View Post
    But the 14mm and the wide converter is smaller and lighter, and gives you two lenses with no software correction required. :-)

    G
    I have one of those little Samyang fisheyes and it is very small and light, exactly the philosophy of MFT and I was agreeably surprised when I received it. I don't know the size of the wa adapter you are using on the 14mm, but when both are added, they may not be really smaller than 7.5mm Samyang/Rokinon :

    Dimensions (DxL) Approx. 2.36 x 2.20" (60 x 55.8 mm)
    Weight 7.65 oz (217 g)
    (Copied from the BHphotovideo website)
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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    Quote Originally Posted by Annna T View Post
    I have one of those little Samyang fisheyes and it is very small and light, exactly the philosophy of MFT and I was agreeably surprised when I received it. I don't know the size of the wa adapter you are using on the 14mm, but when both are added, they may not be really smaller than 7.5mm Samyang/Rokinon :

    Dimensions (DxL) Approx. 2.36 x 2.20" (60 x 55.8 mm)
    Weight 7.65 oz (217 g)
    (Copied from the BHphotovideo website)

    photo made with E-PL1 and Summilux 25

    The 14mm weighs 64g and measures 54x20 mm (not counting caps and flange depth). Add the Sony VCL-ECU1 and it grows to 65x59 mm, 193g total.

    So ... quite close, really. I paid $126 for the new but unboxed Lumix G 14mm f/2.5, and $100 for the VCL-ECU1. I like that the assembly requires very little in way of correction, nets a 10.5mm rectilinear FoV.

    I'm still waiting for the Panasonic DMW-GWC1 wide converter to arrive. I want to compare the performance it produces against the 14+Sony converter. One thing that it will certainly have going for it is that the adapter will mount it both more securely and hopefully with more consistent centering. But the Sony converter does perform very well on this lens.

    G
    Godfrey - GDGPhoto Flickr Stream
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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    Quote Originally Posted by Godfrey View Post

    The 14mm weighs 64g and measures 54x20 mm (not counting caps and flange depth). Add the Sony VCL-ECU1 and it grows to 65x59 mm, 193g total.

    So ... quite close, really. I paid $126 for the new but unboxed Lumix G 14mm f/2.5, and $100 for the VCL-ECU1. I like that the assembly requires very little in way of correction, nets a 10.5mm rectilinear FoV.

    I'm still waiting for the Panasonic DMW-GWC1 wide converter to arrive. I want to compare the performance it produces against the 14+Sony converter. One thing that it will certainly have going for it is that the adapter will mount it both more securely and hopefully with more consistent centering. But the Sony converter does perform very well on this lens.

    G
    Yes, pretty close indeed. Funny because your whole combo looks pretty similar to the Samyang, both the look ad the size/weight :




    I got it to take pictures of the night sky and get some startrails, so I don't really care that it is a fisheye. However, I was surprised when I got it : since it is a rectilinear fisheye, so the perspective deformation is not too dramatic provided you keep the camera really level. There were presets floating on the web and I use the lens profile in LR to correct it. There is a choice of several different corrections (equal area, equidistant, rectilinear, stereographic). So this is not a hassle at all. Plus it is producing more agreable pictures than I thought it would.

    This is taken with the 7.5mm Samyang with stereographic correction applied in LR. What it does to the rising sun was a curious bonus..



    rrr_hhh
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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    It's a cute little lens! :-)

    I'd be correcting it constantly. I had a Pentax 17mm and Pentax 10-17mm zoom fisheye in the past, found that while the curvilinear feel was entertaining for a bit it became tiresome quickly.

    Actually, I also have the superb Olympus ZD 11-22mm f/2.8-3.5 ED lens. Max of 3% curvilinear distortion at 11mm, going to 0% by about 15mm or so. It's one of those lenses that I kept a camera to use it on even after nearly all my other FourThirds SLR equipment was sold...

    I just wanted something smaller and lighter for the E-M1 that didn't cost so much. ;-)

    G

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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    I'm looking forward to the new Panasonic 12-32 to help solve this issue. Sure, it's a bit slower at the wide end but the whole lens is smaller and more versatile.

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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    I think I already posted it, but if it can be useful…

    My DIY cheapo wide prime lens for MFT :

    Hawk's Pentax 110 to MFT adaptor + Pentax 110 18mm f2.8 lens + 30.5 mm to 37mm Step Up Ring + Pixco 37mm 0.45X Wide Angle additive
    = 17mm f4 eq. lens

    Actually the 0.45X Wide additive seems to render approx. 0.58X, that is why my 18mm lens gives me a 21mm FF eq.
    I didn't noticed any light lost with the wide additive on the lens, but by principe I prefer to note f3.2 instead of f2.8.
    Sharpness, colors, corners, distorsion, deep of field, bokeh : see yourself (GH1, raw files exported without PP in LR4):






    Last edited by gekopaca; 29th November 2013 at 04:52.

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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    Does anyone have any idea how this Sony converter affects the Hyperfocal Distance of the 14mm?

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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    Quote Originally Posted by turbines View Post
    Does anyone have any idea how this Sony converter affects the Hyperfocal Distance of the 14mm?
    Since it reduces the focal length from 14mm to 10.5mm, the hyperfocal setting at any given aperture will shift accordingly. For instance, with a 14mm lens on FourThirds format, the hyperfocal setting at f/5.6 is 7.62 feet. For a 10.5mm lens, it's 4.3 feet.

    You can use DOFMaster.com to calculate a chart.

    G
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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    Thanks Godfrey

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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    Quote Originally Posted by Tim View Post
    Nice idea G, thanks for posting the samples.. I wonder how it compares to Panasonics own GWC1 ?
    Granted the Sony is wider at 0.75 while the Pana is 0.79
    ...
    A few reviewers I read about the GWC-1 used terms like ok. I assume it was not great. Not a lot of samples that I could find.
    ...
    Finally located a reasonably priced Panasonic DMW-GWC1 wide converter ($99 out of Japan, free shipping) so I could try it out and test it against the Sony. it's a lot smaller and lighter, fits the lens more snugly, and should be better centered due to the threaded mounting.

    Setting up to test now ... :-)

    G

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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    Tested: Olympus ZD 11-22 @ 11, 14 mm against Panasonic Lumix G 14mm w no accessories, w Sony wide converter, and w Panasonic wide converter.

    Results:

    - ZD 11-22 @ 11mm is not quite as wide as the Lumix 14 with either converter
    - ZD 11-22 produces the least rectilinear distortion
    - ZD 11-22 rectilinear distortion and CA, when used with E-M1, is reduced in LR 5.3 substantially when lens profile and CA correction is turned on, both become virtually nil.
    - ZD 11-22 is sharper and higher contrast at corners and edges at all aperture settings, but the difference becomes small by f/5.6-f/8
    - ZD 11-22 has less CA than either Lumix G 14mm
    - Panasonic converter produces slightly wider FoV than Sony converter
    - Panasonic converter produces more barrel distortion than Sony converter
    - Sony converter produces slightly sharper results than Panasonic converter
    - Sony converter produces slightly more purple fringing than Panasonic converter

    It's actually amazing how well the Lumix G lens compares against the ZD 11-22 at 14mm ... the ZD 11-22 does perform better, but the results are close enough to say that for non-critical work you could pick either and not worry about it.

    With the converters, the 14mm's performance is degraded a little, particularly at corners and edges, and both show increased barrel distortion. The Sony wide converter performs better overall, but shows asymmetrical aberrations which I can only conclude come from not being as well centered as the Panasonic wide converter. Because the Panasonic wide converter is actually covering a bit more FoV than the Sony, you can turn on LR's rectilinear full auto correction and then the two are almost indistinguishable—a tiny bump to contrast on the Panasonic image and the perceptual resolution difference becomes identical.

    Conclusion: The Panasonic 14mm fitted with Panasonic wide converter is very small and very light weight, even compared to the same lens fitted with the Sony converter. Given some additional image processing for the Panasonic, results with either of these two can be nearly indistinguishable from the much larger and far more expensive ZD 11-22 lens.

    Now ... how these results compare to the Olympus M.Zuiko 12mm f/2 I don't know, and won't without testing. But using the 14mm and either of these converters is a lot less expensive, and likely a slightly wider FoV.

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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    Thanks Godfrey for posting your test results.

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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    WOW -- thanks for doing all that work, Godfrey. Great information (especially the tip about turning on LR's correction for the 14 + DMW-GWC1).

    In anticipation of the Black Friday/Christmas deals, I knew I'd be looking at purchasing either the 12mm or the 75mm, but not both. I decided to give the DMW-GWC1 a try and to invest in the 75mm (which just came a few days ago). I'm not looking for an indoor, low-light ultra-wide, so using the 11mm (14 + DMW-GWC1) at f/5.6 is fine by me.
    Best regards,
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    Re: an inexpensive ultra-wide prime for Micro-FourThirds


    Olympus E-M1 + 14mm f/2.5 + DMW-GWC1 0.79x wide converter
    ISO 800 @ f/4 @ 1/5 second

    Exercising the 14mm plus DMW-GWC1 combination, figured I should add it to this thread too. I think the Sony produces slightly sharper results, but I do mean slightly. This setup is smaller, lighter, handier.

    Thanks for looking. Comments always appreciated.

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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    Reviving this thread because I happened upon quite a good deal for the M.Zuiko 9-18mm f/4.0-5.6 zoom (the Micro-4/3 version). I don't do so very much Ultra wide, so I had been using the quite capable Panasonic 14mm f/2.5 and DMW-GWC1 converter for a 10.5mm prime, and I though I'd compare the two. A quick summary of what I found with my copies:

    • Collapsed, the Oly 9-18 is just as small as the Panasonic 14+GWC1.

    • At 10.5mm and 14mm, the maximum apertures for the 9-18 are f/4.4 and f/4.9 respectively. The Panasonic has a maximum aperture of f/2.5. I use UWA mostly for landscapes, so shooting at f/5.6 (on tripod) is usually just fine for me.

    • At f/5.6, the Olympus has slightly better corner sharpness at both focal lengths. I was expecting this at 10.5mm because of the addition of the wide converter, but I was surprised that the Olympus was also slightly better at 14mm.

    • The Olympus exhibited more red-green fringing in the corners than the Panasonic, either natively or with the GWC1.

    • The 14+GWC1 showed more barrel distortion than the Olympus.

    • On paper, it seems almost insignificant, but 9mm is appreciably wider than 10.5mm (18mm vs 21mm equivalent FOV).

    • The Olympus is weakest at 18mm, although performance is still quite acceptable (and I have other options at this focal length).
    Best regards,
    John.
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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    Sounds good, John. :-)

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    Re: an inexpensive ultra-wide prime for Micro-FourThirds

    I have had the 4/3 9-18 since G1 days but rarely used it because relatively its big and heavy with the converter for use on an m4/3. So, my smallest lightest widest was the older Oly 17/2.8. I recently bought the little m4/3 9-18 and now carry it all the time so it gives me a quite different view to work with.

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    Re: 9-18 M.Zuiko

    I'm quite pleased, actually. Reports on the 7-14 indicate it's better, but the 9-18 has found a place in my bag quite easily.

    At 13mm (Stonehurst. Fishing village on the south shore of Nova Scotia)



    At 9mm (Gaff Point, Nova Scotia)

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