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Thread: The A7/R Adaptor thread

  1. #201
    Subscriber Member weinschela's Avatar
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    Re: The A7/R Adaptor thread

    Quote Originally Posted by Ron Pfister View Post
    Rafael, I have used the Hawks helicoid adapter (which I believe was the first such adapter for E-mount) extensively with the NEX-7. The manufacturing tolerances of that adapter aren't very tight at all, and it therefore has quite a bit of slop (it's pretty serious: you can see the lens move very obviously with respect to the camera when you focus or change the aperture, particularly when the helicoid is extended). I expect the Voigtländer to be better with this respect, but haven't seen it in the flesh.

    I have yet to try the Hawks adapter on the A7R, and am wondering to what extent the corner performance problems with M-glass are affected by helicoid extension. In theory, the situation should improve due to the exit pupil moving away from the sensor, but there may be other factors at play, as well.

    In general, though, I have decided to stay away from M-lenses with the A7R, but that's just me...
    Ron: I have been using the Hawks Helicoid (v.2) on an A7r for the last 10 days or so. Mine is not so sloppy, so I think there are some manufacturing tolerance things going on. There is some vignetting on some lenses (35mm Summilux) but strangely not on my WATE (or maybe I am not looking hard enough) but fairly easily correctable in ACR. I've now got a Phigment adapter coming, which will allow coded lenses to communicate with the camera. Except that one will surely vignette with my 135 (that what Paul at Phigment says). When I have the Phigment I will report. Since I had no Sony lenses until yesterday when the 55mm showed up, I used only Leica M lenses. So far my general reaction is that the Sony is okay but is not going to induce me to abandon my M(240).
    Alan

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    Re: The A7/R Adaptor thread

    Quote Originally Posted by ZoranC View Post
    Well, FedEx managed to lose my adapter and in the meantime both B&H and Adorama ran out of stock. Weather outside is beautiful, I few days off and number of Nikon lens I want to try, and no adapter that is not vignetting. Not fun.
    Replacement Novoflex adapter arrived yesterday and good news, so far I couldn't see it causing any vigneting nor color cast with CV 40/2 Ai-S like CV adapter did. Tomorrow I am going to try it with old Sigma Macro 24/2.8.

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    Re: The A7/R Adaptor thread

    My comment about the Novoflex LEM/NEX...

    Actually I wanted a Voigtländer VM-E since I use a Voigtländer adapter for my Micro Four Thirds System and it features a real light trap. It also covers the entire bayonett of the lens (which is metal ... so may introduce internal reflections).
    Since the Voigtländer was not available I've bought a Novoflex.
    The tube of the Novoflex looks okay to me (ribbed surface) but the adapter doesn't cover the bayonett of the lens. So I've covered the bayonett of the lens (and since I was at it I've also covered the tube of the adapter) with some light trap material (flocked paper used in optics). See attachment before/after (just iPhone snaps... but I think they will do).
    Building a little light trap and covering the bayonett of the lens shouldn't be so hard. So me personally I think the Novoflex is somewhat disappointing. It fits tight and the registration seems to be accurate, though. Still ... as soon as the Voigtländer is available again I'll buy one ...
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    Re: The A7/R Adaptor thread

    Quote Originally Posted by thomas View Post
    My comment about the Novoflex LEM/NEX...

    Actually I wanted a Voigtländer VM-E since I use a Voigtländer adapter for my Micro Four Thirds System and it features a real light trap. It also covers the entire bayonett of the lens (which is metal ... so may introduce internal reflections).
    Since the Voigtländer was not available I've bought a Novoflex.
    The tube of the Novoflex looks okay to me (ribbed surface) but the adapter doesn't cover the bayonett of the lens. So I've covered the bayonett of the lens (and since I was at it I've also covered the tube of the adapter) with some light trap material (flocked paper used in optics). See attachment before/after (just iPhone snaps... but I think they will do).
    Building a little light trap and covering the bayonett of the lens shouldn't be so hard. So me personally I think the Novoflex is somewhat disappointing. It fits tight and the registration seems to be accurate, though. Still ... as soon as the Voigtländer is available again I'll buy one ...
    I have both Novoflex and CV one. While Novoflex does not cover bayonet of lens completely on the other side bayonet on CV adapter itself is highly polished / reflective so neither is perfect and CV one might be more likely to introduce reflection and harder to combat reflection on.

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    Re: The A7/R Adaptor thread

    I just received the Samyang 24mm TS lens in Nikon mount and look forward to doing some landscape work with this lens when weather improves. I used a Novoflex Nikon to E mount adapter, coupled with the ASTAT-NEX for tripod mounting. Setup in image below is on a small Gitzo that is really not stable enough, but something that was convenient for some initial indoor testing. The lens is not as well made as the Canon 24 TSE II that I used earlier with Canon DSLRs, but it functions pretty much the same and image quality is OK. There is some distortion, but I don't plan on doing any critical architecture work so should be OK.

    ]

    A quick two shot stitch, vertically shifted images. 65 mp original, downsized to 25%.


    Another in 2 shot stitch horizontally shifted shots (shot through a glass door so reflections and bad image quality) 50 mp.
    Carl
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    Re: The A7/R Adaptor thread

    I can't believe I am buying Canon FD lenses again! After I sold them all off about 15 years ago, I have just re-purchased two that I had before (85mm 1.2L and 50mm 1.2L).

    I believe that the a7 and a7r are real game-changers for a lot of us... and these lens purchases only go to convince me more so.

    Anyway, I need a FD--->FE adapter now. Does anyone have an opinion about the quality of adapters for Canon? Do the general opinions in this thread apply?

    Thanks,


    ---Michael
    a7r, a7rII, FE 16-35, FE 24-70GM, FE 70-200, Loxia 21mm, 35mm, 50mm
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    Re: The A7/R Adaptor thread

    I bought the A7 in large part to use legacy lenses I have collected through the years but now I'm in a quandary because I have so many 24mm lenses. I seek council here as I would rather not have a "million" adapters and wonder what the consensus on which of these might be the best bet with the A7.
    24mm f2.8 AIS Nikkor N
    24mm f2.8 MD Rokkor X
    24mm f3.5 Super Takumar SM
    24mm f2.8 RMC Tokina for Olympus OM
    25mm f2.8 Zeiss Distagon for Rollei SLR
    I have ordered Nikon and Rollei adapters but of course these are the 2 largest lenses.
    Thanks for any help offered.
    FYI I tried the 21mm Super Angulon symmetrical for Leica R and as expected it is excellent in the center but gets soft with considerable fall off in the corners. I had adapted the lens to use on Leica M so was able to test it.

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    Re: The A7/R Adaptor thread

    You probably know your lenses best. I have a 28mm Tak SMC and a 35mm Tak Super and both suck on my A7r even stopped down. Corners never come close to ok.
    I am not a painter, nor an artist. Therefore I can see straight, and that may be my undoing. - Alfred Stieglitz

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    Re: The A7/R Adaptor thread

    Quote Originally Posted by ZoranC View Post
    I have both Novoflex and CV one. While Novoflex does not cover bayonet of lens completely on the other side bayonet on CV adapter itself is highly polished / reflective so neither is perfect and CV one might be more likely to introduce reflection and harder to combat reflection on.
    My Voitländer VM-E has been shipped today.
    It covers the polished lens bajonett completely and features a real light trap. The polished part of the VM-E adapter's bajonett gets completely recessed in the bajonett of the camera.
    Huge difference IMO...
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    Re: The A7/R Adaptor thread

    FYI - I just received a Pixco adapter for Canon FD lenses - works fine but has the added bonus that the Novoflex ASTAT-NEX tripod collar fits this other adapter perfectly. The Pixco adapter was just under $16 too

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    Re: The A7/R Adaptor thread

    The A7 body is here, waiting for the Novoflex LER/NEX adapter to arrive.

    I'm going to stick with Leica R and Nikkor lenses, and Novoflex adapters. Next up I'll get the Nikon F to NEX adapter and the ASTAT/NEX mount for the tripod. After that a 24 or 28 mm lens and a set of the Skink pinhole/zone plates. The larger format will be a benefit for doing pinhole photography.

    Has anyone used the Elmarit-R 24/2.8 and 28/2.8 mm lenses on the A7? or the Nikkor 24/2.8 and 28/2.8 or 28/2?

    thx for any info!

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    Re: The A7/R Adaptor thread

    Godfrey - I tested the Nikkor 24/2.8 AiS and found the following - mild vignetting gone by f5.6, centre sharp and improves a little with stopping down, corners soft WO but improve stopping down but not really acceptable until f8, CA in corners that's easily removed. In other words not perfect but quite useable IMO. Almost identical results with the earlier pre-Ai version, with the edge to the newer MF

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    Re: The A7/R Adaptor thread

    Quote Originally Posted by Shac View Post
    Godfrey - I tested the Nikkor 24/2.8 AiS and found the following - mild vignetting gone by f5.6, centre sharp and improves a little with stopping down, corners soft WO but improve stopping down but not really acceptable until f8, CA in corners that's easily removed. In other words not perfect but quite useable IMO. Almost identical results with the earlier pre-Ai version, with the edge to the newer MF
    Thanks! Is that on A7 or A7r?

    Whatever of the four lenses I acquire I'll test on film alongside the A7 too. I won't fault the A7 if the same lens characteristic shows up on film. ;-)

    G

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    Re: The A7/R Adaptor thread

    On an A7

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    Re: The A7/R Adaptor thread

    Quote Originally Posted by Shac View Post
    On an A7
    thanks! I'm inclined to go with an Elmarit-R 24/2.8, but the 28mm version might be a better match.

    G

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    Re: The A7/R Adaptor thread

    I seem to remember that E. Puts suggests these 2 lenses are very similar in IQ

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    Re: The A7/R Adaptor thread

    For those with Leica-R - lenses - I really can recommend the Leitax-adapter:



    Inside it's matte black :-) It is screwed to the original mount (screws are added), the mount is NOT replaced (as it's done when going Leica-R to Sony A-mount or what ever else). Fits perfectly to my A7R.

    Andreas
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    Re: The A7/R Adaptor thread

    Wow! Now that's a secure looking adapter, Andreas.
    A bit of a pain if I want to interchange lenses between Leicaflex SL and A7, but maybe warranted for the big, heavy Elmarit-R 180/2.8 in particular...

    G

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    Re: The A7/R Adaptor thread

    i've made quite a few Leica M screwmount to Leica M bayonet adapters for mounting old Leica and CV lenses, and also the female bayonets, which are the problem area, and spent a bit of time working out details. as mentioned, what holds the lens and body, lens and adapter flanges together is a spring that can get overloaded with heavier lenses, more extension.

    i am considering a new concept that would eliminate the problem. so for example your R lens mounted to the A7/R would be wobble free both at the adapter and at the camera.

    any interest?

  20. #220
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    Re: The A7/R Adaptor thread

    Count me in!
    I would like to be able to use my 100mm Macro-Elmarit on the A7R.
    Thanks,
    Mike
    Quote Originally Posted by jlm View Post
    i've made quite a few Leica M screwmount to Leica M bayonet adapters for mounting old Leica and CV lenses, and also the female bayonets, which are the problem area, and spent a bit of time working out details. as mentioned, what holds the lens and body, lens and adapter flanges together is a spring that can get overloaded with heavier lenses, more extension.

    i am considering a new concept that would eliminate the problem. so for example your R lens mounted to the A7/R would be wobble free both at the adapter and at the camera.

    any interest?

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    Re: The A7/R Adaptor thread

    Quote Originally Posted by jlm View Post
    i've made quite a few Leica M screwmount to Leica M bayonet adapters for mounting old Leica and CV lenses, and also the female bayonets, which are the problem area, and spent a bit of time working out details. as mentioned, what holds the lens and body, lens and adapter flanges together is a spring that can get overloaded with heavier lenses, more extension.

    i am considering a new concept that would eliminate the problem. so for example your R lens mounted to the A7/R would be wobble free both at the adapter and at the camera.

    any interest?
    Certainly!

    A notion to consider—one of the reasons I've settled on using the Novoflex adapters for the present is to be able to use the ASTAT/NEX tripod mount as well. That serves several ideas:

    - It eliminates having to have a tripod mount on the camera body and isolates mount flex to the lens and body couplings independently.

    - It eliminates having to use L-plates and allows for easy rotation of the camera/lens without moving the optical center of the lens at all.

    - I can remove the tripod mount for hand-held shooting and not have the foot get in the way.

    So I would suggest you consider designing adapters compatible with the ASTAT/NEX tripod mounting or some similar type of universal tripod mounting that services these ideas.

    G
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    Re: The A7/R Adaptor thread

    +1
    With best regards, K-H.

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    Re: The A7/R Adaptor thread

    Quote Originally Posted by k-hawinkler View Post
    +1
    +2
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    Re: The A7/R Adaptor thread

    +3 - and as I mentioned earlier or elsewhere, as well made as the Leitz replacement bayonet mounts are, there is still some play, whereas mounting an R lens directly with a Novoflex R-Sony adapter is solid

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    Re: The A7/R Adaptor thread

    I got my Voigtlander VM today. Way, way better than the Metabones. (I think eBay is in its future),

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    Re: The A7/R Adaptor thread

    spotted an error in the ultimate guide:

    "The fit and finish of the FotodioX Hasselblad V to Sony E-Mount Adapter is really top quality just as you’d expect for a high-end product. It has a stainless steel lens mount that won’t expand or contract like brass."

    stainless steel and bronze/brass are quite close in coefficients of thermal expansion:

    ss: 9.9 x 10*-6 in/in-deg f
    bronze: 10.2-10.4 x 10*-6 in/in-deg f

    aluminum (used by Novoflex) is quite a bit more, 12.8

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    Re: The A7/R Adaptor thread

    Recap: My aim is to use primarily my existing set of Leica R lenses on the A7.

    To that end, I ordered the Novoflex LER/NEX adapter I knew I wanted, but decided to try a Kipon as well. It's nice to have two ...

    They arrived today. The Novoflex is, as expected, excellent. The delight is that the Kipon is nearly on par with it. The finish isn't quite as nice, but it fits securely and precisely on both flanges and focuses infinity at exactly the same point.

    That's a nice surprise for a piece that cost about a third what the other one did.

    --- addendum
    Have no time just at the moment, but I took a few minutes to fit the Summicron-R 90/2 (happened to be near to hand) and play with the A7 and lens put together. Not bad, the lens is large and a touch heavy, but it doesn't overwhelm the balance any more than a Summicron-M 90/2 did on my M4-2 years ago. I was able to make a couple of exposures around the office ... it's easy to focus with Peaking set to the middle setting and the magnification mapped to the AF/MF button. Encouraging.
    Last edited by Godfrey; 21st January 2014 at 19:45.

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