Upload & Sell: On
I have been playing with the new EF to NEX adapter I ordered and received from RJC. First off, I do not have anything to do with that company nor with Metabones. This is just my personal and brief evaluation on using that adapter on my A7r.
1. The fit of this adapter on both the EF and E-mount is actually really good. No crooked edge or mis-alignment with just eyeballing the adapter. I do have a Metabones adapter for a different mount and I am pleased with the fit of both adapters.
2. This adapter is very similar (or entirely the same?) to that of Metabones III in that they both allow AF with Canon EF lenses, they keep the EXIF data intact, and they enable IS on selected Canon lenses.
3. It didn’t come with any instruction but in general it is pretty easy to use. As I mentioned above, we take the convenience of using native lenses for granted and this adapter has quirks. Each time you change lenses, you actually have to turn off the camera. If you don’t do that the following lens will not be recognized and the camera thinks that you are using a MF lens. The IS still works though. I understood that it is the same with Metabones III. It works with pretty all lenses I have and tried. But I haven’t tried it on my super tele lenses but I wouldn’t do that anyway for real life shooting.
4. Operational-wise this adapter is great, maybe a little bit better in that respect than that of Metabones III. It has a rotating collar and you can change the orientation from landscape to portrait easily. Plus, the collar is raised enough that it doesn’t create any physical obstruction of using both 17 and 24mm TS-E lenses, even when they are fully shifted/tilted without any spacer. I used a general purpose Arka-style plate for this adapter and the whole contraption can be used to rest the combo on your palm for handheld shooting. One nitpick, the collar doesn’t have any marking that makes it more convenient to tell whether you orient your setup straight or not. I know you can you use the built-in electronic leveler but… The finish of the lens collar is OK, I have seen better made Chinese lens collars. There is no lining insider the collar; you are rubbing metal against metal, correctly more paint against paint when you rotate your combo. But I still think that it is more convenient than having to install an L-bracket under your adapter. You can remove the collar easily without any tools for handheld shooting with a small lens, like the 40mm pancake.
5. AF performance - Don’t expect wonder here. First, continues AF is not supported. Boy, I cannot tell you how much I appreciate the AF performance of my 5D Mark III after playing with this adapter/A7r. OK, only single AF then. Here is my take, under low light shooting conditions, it struggles and hunts to get to achieve AF. In a few cases, it gives up after racking back and forth. The ironic thing is I could see on the EVF that it is in focus. Weird but what do I know. BTW, it seems that faster lenses focus faster than slower ones with less hunting. The exception is the 85mm f/1.2, it still hunts . Under good lighting conditions the AF gets faster and more sure-footed. But again, this is the general impression as there are few cases where still it doesn’t give me the AF confirmation although it is already in focus.
Final note - My intention of getting the A7r is to get a higher MP body that I can use my Canon EF lenses with. I like the A7r more for usage with shorter lenses, up to 135mm lens and of course, for my TS-E lenses. For anything else, I will still rely on my 5D Mark III, which performs admirably in the longer focal length range. And it feels neglected lately . I am sure I can get my setup to support the usage of a Canon 70-200mm f/2.8 using both the adapter collar and the lens tripod collar to minimize vibration further. I do have an RRS MPR-CL II that I can use to do this. I just need a thin spacer to make it really fit perfectly but it is not that convenient to put it together and more items to take with you. So, I started questioning the merit of this setup. If it takes some effort to set this up at the convenience of your home and at your leisure, it would be 10X more difficult or 10X less convenient to do in the field under real life shooting conditions.