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Thread: Olympus' m4/3rds system

  1. #1
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    Smile Olympus' m4/3rds system

    Yes, it is!

    I have been saying that it is an Olympus creation.

    It took me about 2-3 seconds after unwrapping the G1 kit to figure that out.
    Even before the battery was charged, I checked with an Olympus pen F lens. It did mount but would not make a tight fit. It took a while to find a right shim, add it to the lens and sure enough it would!


    Shown here with the self made m4/3rds to Pen F adapter (will give you the details as to how you can make your own later here) and an Olympus Pen F lens.

    With the ideal portrait lens for the m4/3rds system:



    I am fortunate to be in an unique position to disclose more information on the Pen F system lenses (as applied to the digital) as I have all the primes except the 20/3.5 and the 800mm mirror lens (I do not have the zooms).


    [Since the edit function disappears after a few minutes, I can't keep adding to this post. So, I would ask everyone not to respond now as I will add more details (may takes hours or days).]

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    Re: Olympus' m4/3rds system

    I think I posted this before (I hope I did not mis-label it as having been taken with another lens! ).


    42/1.2 @ f/1.2, ISO400

    100% crop



    BTW, this 42/1.2 lens is tested to be the fuzziest (unsharp) of all the Olympus Pen F lenses, especially wide open.

    Upclose (0.3m) and under overcast conditions and with an insufficient hood (important for this lens that a suitable length hood is used- and for many other lenses from the Pen F line-up).



    Under much more suitable lighting for a portrait (again, wide open):

    Last edited by Vivek; 26th January 2009 at 03:50.

  3. #3
    tofu
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    Re: Olympus' m4/3rds system

    well, i hope you post your DIY instructions soon.... i have 2 20/3.5s!
    eager to test them!
    well, one has some mold but the other one is nice.
    i have the Pen 150/4 too.... what would that be on the G1?

    Happy Chinese New Year everyone!

    tofu

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    Re: Olympus' m4/3rds system

    The "normal" lens, the pen F 25mm f/2.8 is excellent (the pen F 25/4, is not that great, besides being slow). However, the DOF is enormous and setting it at 3 meters basically makes it a P&S set-up. Only between 0.25m to ~2.5 m, at f/2.8 one can see any separation.

    I did post this one earlier (Carl asked which lens it was).



    The lens does not vignette (it was added in the post). At close quarters, it is very, very sharp (I will dig up some samples later).

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    Re: Olympus' m4/3rds system

    I found a couple of the Pen F 25/2.8 shots. Both wide open, closer distances.


    25/2.8 at f/2.8, ISO400, 1/50s, hand-held

    This shutter speed isn't enough to get the fine details.

    Slightly different lighting conditions (again hand-held).


    25/2.8 at f/2.8, ISO400, 1/80s, hand-held

    This is fast enough (could have been faster) to see some finer details.

    100% Crop


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    Re: Olympus' m4/3rds system

    Going to the opposite end (well this is the longest lens I have from pen F, just realized that I do not have the ultra rare 400/6.3 either). 3 consecutive shots taken with the continuous/burst mode under less than ideal conditions. Low light, pen F 250/5, ISO800, f/5, 1/160s, the setup was supported on a balcony rail and the shutter was pressed manually. Back yard pigeon at ~3.5m.








    I did not do justice to the lens. Sharp and no CA. Tiny, with a nice built-in hood, compact and light weight.
    Last edited by Vivek; 26th January 2009 at 12:34.

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    Re: Olympus' m4/3rds system

    HI Vivek
    Lovely shots - the boy and the bird.
    I'd not thought of the Pen F lenses, but they're obviously a dead ringer for the G1

    Just this guy you know

  8. #8
    wblynch
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    Re: Olympus' m4/3rds system

    Ebay sellers seem to think Pen-F lenses are made of gold.

    Perhaps they are?

  9. #9
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    Re: Olympus' m4/3rds system

    After Vivek is done, they might be worth platinum.

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    Re: Olympus' m4/3rds system

    Quote Originally Posted by jonoslack View Post
    HI Vivek
    Lovely shots - the boy and the bird.
    I'd not thought of the Pen F lenses, but they're obviously a dead ringer for the G1
    Hi Jono, Thanks. Exactly what I said you could try if we meet up here!

    I put some photos deliberately and not of the actual lenses (which are cute and handle beautifully) for a reason. One of the Olympus Pen F advertisements from the sixties said, "the lens alone is worth the price". And their selling prices were high, higher than their Leica counterparts in some instances.

  11. #11
    Stuart Dean
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    Re: Olympus' m4/3rds system

    I used a Pen FT for around 20 years and own the 20,38,100 and 150mm lenses plus an original Pen F.
    The lenses will certainly be used on my G1 if and when I can make/buy a suitable mount adapter.
    I well remember making 20X16 prints with the FT and if one used something like Ilford Pan F or Kodak Panatomic X film it was impossible to detect that the prints were from a half frame.
    Using a slow film meant that the grain size on the finished print was similar to that of a full frame print.
    I will never part with my FT and Iím really delighted that those gorgeous little lenses will used again.
    I see that it is claimed that the FT lenses were as or more expensive than Leica optics.
    I donít own and have never used any pre digital Leica lenses but the Olympus half frame lenses were surely comparable with lenses from any manufacurer at any price!!
    Canít wait to see what Olympus come up with in u4/3.

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    Senior Member Brian Mosley's Avatar
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    Re: Olympus' m4/3rds system

    Vivek, just to be clear - are you saying that the Pen-F simply needs a spacer shim to be added, to make it mount to a m4/3rds camera?

    Or, is that an adapter you've shown to the left of the cam?

    Kind Regards

    Brian

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    Re: Olympus' m4/3rds system

    Brian, You can mount any pen F lenses on the G1 with a spacer but they will focus way past infinity (except one lens, I will talk about it a bit later) since the registries are different. The m4/3rds having a significantly shorter camera registry.

    So you do need an adapter to get the correct infinity focus of the pen F lenses on the M4/3rds.
    Last edited by Vivek; 27th January 2009 at 04:30.

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    Re: Olympus' m4/3rds system

    To continue with my story..

    Olympus Pen system had many normal lenses:



    The 38/2.8 (on the left) is the oldest. It is superb on the G1 (rare, collector item).

    The 38/1.8 is the most common. Absolutely fabulous!

    The 40/1.4 is stunning. One of the best of all the pen F lenses!

    The 38/2.8 pancake is a the cutest and the lightest (70g) lens one can have.

    The G1 is not a pen F camera, digital or otherwise.

    Not even close (that is my opinion).

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    Re: Olympus' m4/3rds system


    pen F 40/1.4, f/1.4, ISO800

    One of my very early photos taken with the G1 (I think the 2nd day).

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    Re: Olympus' m4/3rds system

    Any system worthy of its name should have extension rings in its accessory list.

    The Olympus Pen F system was no exception. There were two types of extension rings made. I have never seen the Type 1, single piece extension ring.

    The later type extension ring is the set one can find nowadays.



    This, IMO, is the hottest item especially when it comes to the m4/3rds adapter.

    Initial trials with any of the combinations showed that it is simply not possible to get the right extension to make the adapter for the m4/3rds body.

    As shown here:



    I took rings A, B and D, ground them up a little (every one of them), screwed them together to make the m4/3rds to Pen F adapter (you still need that shim on the male end of the adapter to mount it on a m 4/3rds body).

    I can not give the exact dimensions that need to be ground since my Vernier calipers broke (true). I used a flat (important) grinding stone with a fairly smooth surface for the shortening. It was done by trial and error. Rings A and D are brass (chromed) and ring B is aluminium.

    Here is to show how small a shortening of the ABD ring combination you need.


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    Re: Olympus' m4/3rds system

    So why haven't you scratched out or taped over all of the wording on the Oly's

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    Re: Olympus' m4/3rds system

    They are mine and I do as I please with them.

    See, the aluminium case on which the cameras are resting? That is a customized case for my pen F gear.

    You haven't seen nothing.
    Last edited by Vivek; 27th January 2009 at 06:07.

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    Senior Member Brian Mosley's Avatar
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    Re: Olympus' m4/3rds system

    Maybe he just likes black lettering?

    I suppose you could argue that luminous white lettering can be a little conspicuous - depending on where and how you wish to use your camera.

    Unfortunately, carrying a camera is getting more serious in the UK.

    New Law on the way... Taking photos of police officers could be considered a crime.

    Kind Regards

    Brian

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    Re: Olympus' m4/3rds system

    I love that mushroom shot, Vivek, it's an absolutely wonderful image.

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    Re: Olympus' m4/3rds system

    i have a pen FT with a 42mm f1.2 lens, same as in your opening shot; did you mention that lens? it looks like it would need an adapter...

  22. #22
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    Re: Olympus' m4/3rds system

    Yes, we are waiting on you to do one for us.

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    Re: Olympus' m4/3rds system

    Quote Originally Posted by bondo View Post
    I love that mushroom shot, Vivek, it's an absolutely wonderful image.

    Thank you, Steen. The 42/1.2 is magical.

    Quote Originally Posted by jlm View Post
    i have a pen FT with a 42mm f1.2 lens, same as in your opening shot; did you mention that lens? it looks like it would need an adapter...
    Yes, great lens. One of my favorites. Even more useful than my 50/0.95.

    All pen F lenses need an adapter (barring one). Yes, I use them all with an adapter that is also described.

  24. #24
    doubledan
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    Re: Olympus' m4/3rds system

    Question for Vivek:

    I am fascinated by the possibilities of PEN F lenses on the G1, but I have a basic (stupid) question: how does one calculate the equivalent focal length?

    (I know that it's 2X for the Leica M and Canon rf lenses I enjoy using on the G1, but is it the same for the PEN lenses?)

    Keep up the interesting work!

    Dan

  25. #25
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    Re: Olympus' m4/3rds system

    I'll take this, Vivek.

    First, there are no stupid questions.

    Yep, to get the effective 35mm field of view for any lens on a G1, just use 2x by the focal length.

  26. #26
    doubledan
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    Re: Olympus' m4/3rds system

    Quote Originally Posted by monza View Post
    I'll take this, Vivek.

    First, there are no stupid questions.

    Yep, to get the effective 35mm field of view for any lens on a G1, just use 2x by the focal length.

    Thanks for the quick response, Monza. As I suspected, it means there's no way just yet to have what many of us want -- a reasonably fast wide prime for the G1 without vignetting.

    (Actually, there are stupid questions, and I could give many examples, but I appreciate your kindness.)

  27. #27
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    Re: Olympus' m4/3rds system

    Yep. In any case, the widest Pen F lens is 20mm, which isn't even all that wide on a Pen F. But it is a great tiny option until the 20/1.7 Panasonic lens comes out.

    I guess if one puts a Pen F on a Panasonic that makes it a Pan F.

  28. #28
    doubledan
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    Re: Olympus' m4/3rds system

    Quote Originally Posted by monza View Post
    Yep. In any case, the widest Pen F lens is 20mm, which isn't even all that wide on a Pen F. But it is a great tiny option until the 20/1.7 Panasonic lens comes out.

    I guess if one puts a Pen F on a Panasonic that makes it a Pan F.
    Very good. Meanwhile, though, I've been using ZM 21/2.8, which is superb on the G1 but still about 1 stop too slow, not as easy to focus as longer lenses, and not quite wide enough for reliable zone focusing under some conditions.

    The 20/1.7 Panasonic should be great (even if it isn't "great"), but I still hope for something like a 12 or 14 f2 with autofocus. If the latest rumor is correct, maybe the closest we'll come in the near future is an Olympus 12-45 zoom at f2.4 on the wide end. That would be a rather bulky lens, I imagine.

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    Re: Olympus' m4/3rds system

    The focal lengths remain the same and as I mentioned in the opening post, the pen F 42/1.2 is the perfect portrait lens for the m4/3rds sensor. Let me reiterate that this lens was tested to be the fuzzy one in the pen F line-up!


    Pen F 42/1.2, G1, f/1.2, 1/50s, ISO800

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    Re: Olympus' m4/3rds system

    Yes, unacceptably fuzzy. After all, I can just barely count the eyelashes on my screen.

  31. #31
    wblynch
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    Re: Olympus' m4/3rds system

    Quote Originally Posted by Vivek View Post
    The focal lengths remain the same and as I mentioned in the opening post, the pen F 42/1.2 is the perfect portrait lens for the m4/3rds sensor. Let me reiterate that this lens was tested to be the fuzzy one in the pen F line-up!
    Vivek,

    Is there an Olympus Pen-F forum for those of us interested in more info?

    Thanks, Bill

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    Re: Olympus' m4/3rds system

    Bill, It would be difficult to find an Olympus (not digital) forum nowadays. I linked Skip Williams' site (in the other thread) that has some pen F literature.

    John Foster has written the complete book on Olympus Pen F (http://www.biofos.com/pub/index.html). I have only thumbed through this book. It is superbly done. Unfortunately, I was not on time to buy a copy for myself and it is now out of print.

    If there is enough interest, John will bring out another print, I am sure. Drop him a line.

    Michael, Thanks!

  33. #33
    wblynch
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    Re: Olympus' m4/3rds system

    Thanks Vivek and Monza !!

    I emailed John Foster and asked to be added to any interest list or waiting list he may be building for a future printing.
    Last edited by wblynch; 30th January 2009 at 09:42.

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    Re: Olympus' m4/3rds system

    Here is something that might be of interest.

    I just received these two Oly Pen F lenses from KEH, a 38/1.8 and a 100/3.5.

    Since everyone with a G1 has a kit lens, you know what size it is. I thought I'd show just how tiny these Pen F lenses are.

    For reference, the 38mm cost me $17 and the 100 was $62. (Yes, they wanted more for a body cap than the 38mm.)


    Last edited by monza; 30th January 2009 at 11:32.

  35. #35
    Senior Member Brian Mosley's Avatar
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    Re: Olympus' m4/3rds system

    Wow, that 38mm f1.8 is a beauty - I'll give you $40 for it!

    Have you got an adapter for m4/3rds?

    Kind Regards

    Brian

  36. #36
    kiloran
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    Re: Olympus' m4/3rds system

    Would I be right in assuming to build an adapter for Pen F "all" you need is:

    Pen F -> OM -> 4/3rds -> MFT?

    Or is the Pen F -> OM adapter rare and expensive enough to mean its better to get a dedicated adapter?

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    Re: Olympus' m4/3rds system

    Quote Originally Posted by kiloran View Post
    Would I be right in assuming to build an adapter for Pen F "all" you need is:

    Pen F -> OM -> 4/3rds -> MFT?

    Or is the Pen F -> OM adapter rare and expensive enough to mean its better to get a dedicated adapter?
    Unless the PenF->OM adaptor has optics, it would be macro only (Given the formats and registers involved, I would assume that adaptor is actually an OM->PenF adaptor for using OM lenses on PenF, going the other way would not work very well).

    For PenF->m43, you'd want a dedicated adaptor since the register of PenF's is shorter than 4/3rds.

  38. #38
    kiloran
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    Re: Olympus' m4/3rds system

    Quote Originally Posted by mawz View Post
    Unless the PenF->OM adaptor has optics, it would be macro only (Given the formats and registers involved, I would assume that adaptor is actually an OM->PenF adaptor for using OM lenses on PenF, going the other way would not work very well).

    For PenF->m43, you'd want a dedicated adaptor since the register of PenF's is shorter than 4/3rds.
    Yep, its the other way round, d'oh! Oh well, we'll just wait for Vivek to start the production line

  39. #39
    wblynch
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    Re: Olympus' m4/3rds system

    So...

    Was Olympus prescient when they named it the Pen FT ? (4/3)

    Good thing they didn't name it the P'FT. They might never have sold one

  40. #40
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    Re: Olympus' m4/3rds system

    I'm following Vivek's lead from earlier in this thread and fabricating my own adapter out of Pen FT extension rings. I'm thinking I will probably not get it precise enough, so I'll buy a commercial adapter when they become available.

    I'll post a photo of the 38 on the G1 later tonight.
    Last edited by monza; 30th January 2009 at 15:07.

  41. #41
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    Re: Olympus' m4/3rds system

    Quote Originally Posted by kiloran View Post
    Would I be right in assuming to build an adapter for Pen F "all" you need is:

    Pen F -> OM -> 4/3rds -> MFT?

    Or is the Pen F -> OM adapter rare and expensive enough to mean its better to get a dedicated adapter?

    I think the whole thread is a waste.

    Hey, I put in a lot of effort to disclose how simply you can make your own adapter!

    No, do not wait for me make an adapter for sale. Not gonna happen, ever.

  42. #42
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    Re: Olympus' m4/3rds system

    Not to worry, Vivek, some of us have read the whole thread. Others might need to review.

  43. #43
    kiloran
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    Re: Olympus' m4/3rds system

    <-- makes note that sarcasm rarely works in print

    And has an extension ring set on the way

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    Re: Olympus' m4/3rds system

    No worries. I might have left out a few of the smilies.

  45. #45
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    Re: Olympus' m4/3rds system

    Quote Originally Posted by kiloran View Post
    <-- has an extension ring set on the way
    Bravo!

  46. #46
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    Re: Olympus' m4/3rds system

    Quote Originally Posted by monza View Post
    I'll post a photo of the 38 on the G1 later tonight.

  47. #47
    kiloran
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    Re: Olympus' m4/3rds system

    Sweet

    Just picked up a Pen F and a collection of lenses on eBay, looking forward to playing...

  48. #48
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    Re: Olympus' m4/3rds system

    Very cool, Kiloran.

    The Pen lenses are very well built and so tiny. I don't think I'll ever have to decide what lenses to take on a trip, they are so small, I'll take 'em all.

    Came across wallpaper on the Olympus site, listing a 40mm f/3.5 Macro for the Pen F. It's the only reference I've ever seen about this lens. The 38/3.5 Macro is rare enough...does anyone know anything about the 40 Macro?

    http://www.olympus.co.jp/jp/fun/wall...ype_id=1&la=en

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    Re: Olympus' m4/3rds system

    No clue about the 40/3.5, 1:1, Macro.

    The 38/3.5 Macro does not go to 1:1 and would reach about 1:2 on its own. It is superb lens (sharp, high contrast, etc). It is one my all time favorite macro lenses (out of a several dozen) from any system.

    There are no flowers around so I cracked a nut.


    38/3.5 Zuiko Macro, f/11, 4s tripod, cable release, suitable lighting

    and photographed a small (<1cm long) pendant.


    38/3.5 Zuiko Macro, f/16, 6s tripod, cable release, suitable lighting

    As is the case with most macro shots, lighting is the key. There are literally dozens of macro lenses I can mount/use on the G1 but the size and performance of the 38/3.5 can't be beat.

    Something else that is very unique about the 38/3.5 is that this is the only lens that can be mounted DIRECTLY (with a shim, as I mentioned previously) and without an adapter and can be used for infinity to close ranges. This is possible because of the long focus helicoid in the macro lens.

  50. #50
    Senior Member Will's Avatar
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    Re: Olympus' m4/3rds system

    Anyone heard any news on when Olympus are planning to launch their own m4/3rds body?

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