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hi guys, just bought a sony A7R2. i was a canon user so i already have lots of canon lenses... i decided to use canon glass with the fotodiox. have read some reviews and looked really good. just got my camera and the adaptor so i was testing the camera and it kept freezing the camera. especially when i try to select 24fps. that is just odd! but i found someone on the internet that apparently had the same problem with an A7S2. does anyone have an A7R2 and uses the fotodiox and does not have this problem? i keep asking myself if this is a problem with my adaptor or every fotodiox. ps: didnt had the budget to buy the metabones.

This is my first post on this forum site. I am new to photography and have owned a couple canon dslr cameras (EOS 40D and 70D). Forgive me for my formatting. just got a used Sony A7R ii, which worked perfectly according to the previous owner who sold it on craigslist in pristine condition with all documentation purchased from B&H. I saw it autofocus and take pictures with his own native E-mount lens, which he was selling, albeit at a $1500 price point, and I was already a little hard pressed for cash. I did not have a lens, so I went ahead and purchased the Sigma 35mm f1.4 ART lens with the canon EF mount. I needed some kind of adapter, so I also bought the Fotodiox Pro Lens Adapter from Amazon. I read on this site: http://briansmith.com/sony-a7rii-canon-ef-smart-adapter-tests/ that the Fotodiox adapter should perform alright with the Sigma lens. Once I received everything (today, May 26th), I mounted it all on and took my first picture. Autofocus was... nonexistent. Second shot in better light proved more promising with pretty snappy autofocus. Then I tried to take another photo and when I pushed the shutter down, the screen turned true black and then the "artificial black" for about 5 seconds. When it returned to normal, there was an audible "clicking" or "readjusting" of the whole system. I took the lens and adapter off, put on the lens cap, and I was firing away normally, so it leads me to believe that the lens or adapter is causing some kind of lag. This happens in both manual and autofocus modes. It seems to happen randomly, but it happens more than 75% the times I have tried to take photos. It also happened a couple times when I pressed the shutter half-way. I also thought it could be my SD Card. I am using an old SDHC I SanDisk Ultra 30 mb/s 8gb card. I have a 64gb Lexar 1000x 64gb U3 card coming in a couple days from Amazon.

Just wondering if anyone can shed a light on this problem I have. I have been using a basic a7 camera with a Sony 24-70 lens and occasionally I attached my Canon F2.8 L 70-200 lens to it via a Fotodiox Pro lens mount adapter. I have had reasonable success with the Canon with this arrangement with good well-exposed shots but of course the auto-focusing was a bit of a pain, which took a while to 'lock-on' but once in focus it did a good job. A few days ago I bought an a7Riii with the expectation that the focusing with this Canon lens would be much faster. I was right, it focused faster than I could think about it. BUT.. all shots I took with the Canon lens came out over-exposed. I shoot only in RAW. In the viewfinder while composing they look OK but on playback and in processing they are vastly over-exposed. Using my Sony 24-70 lens on the Riii they are all perfectly exposed, both pre and after capture, just the Canon/adapter setup produced images that are about 3-4 stops over. I have patiently tried every single exposure setting on the Riii, both auto and manual but nothing will change the results. As a fix after loading them into Camera Raw I can reduce the exposure by 3-4 stops to get a good photo but this surely should not be necessary. No clipping of highlights occur. Can anyone tell me why this is happening? Could it be the adapter, which maybe does not work with the Riii (yet is OK with the a7?) Or is it a camera fault? Many thanks.

This is kind of a silly post, I'm just reporting a finding. I'm adapting m42 lenses to my a6500, and had the "brilliant" idea of using a chipped Fotodiox m42 to Canon EF adapter and then putting that on a Commlite EF to E adapter. This way I can program the chip to report the focal length (100mm) and have the a6500 automatically use the correct Optical Steady Shot setting. But even though the EXIF data reports 100mm in my raw files, the OSS does not kick in at all, unless I put the OSS adjustment on manual. Strange... I swapped the Commlite for a Vello "Accelerator" focal-reducing EF to E adapter and wouldn't you know it, OSS automatically kicks in with the correct setting (70mm in this case). So I wonder what is preventing the OSS from working with the Commlite-Fotodiox combo? And I wonder why they don't make m42 to E-mount adapters with chips? (I know we don't need focus confirmation, but it's nice to have relevant EXIF data and auto OSS.)

Hey! I just recently bought the Fotodiox mount adapter from Nikkor F-Mount to E- mount, so I can use my two Rokinon lenses on my a7 camera. I have the Rokinon 16mm t2.2 full frame and Rokinon 85mm t1.5 full frame. I tried the adapter with my 16mm and it worked just fine both APS-C OFF and ON. But the 85mm doesn't work when I switch between APS-C OFF and ON and it stays in ON , so I can't use the whole full frame and it sticks with the crop APS-C. I've just tried these settings in the a7 Menu since I can't find anywhere else an option to work this out. Any ideas? Thank you !

Hi, I'm trying to use a Sigma macro on my A7R, with the EF Fotodiox Pro adapter. I need the through contacts for aperture, even though the AF doesn't work well. I'm finding that I have a contact issue and I can't trace it. My other EF lenses work fine (again, AF is dodgy at best), but it happens with both my Sigma macros. It will fire maybe two or up to ten times without problem, then will just lock up and do a time exposure, but with nothing recorded and it will reset all menu settings to the values before I put the adapter on. I can get it to reset by removing the lens and replacing it, but that's a hassle. The camera is on a tripod, and nothing is changing between exposures, focus is locked off, it just seems random. Question: is this known behaviour? Is there a solution? From the reviews I've read, it seems Fotodiox is pretty well the same as the Metabones, so I'm unwilling to spend a load of dosh on a new one. Any help gratefully received! thanks Phil