Archive 2013 · Sony A7 and A7r Full Frame with Canon Lenses
Lars Johnsson Offline • • • • • • • Upload & Sell: Off
p.87 #1 · Sony A7 and A7r Full Frame with Canon Lenses
snapsy wrote:
I've tried both a Zeiss 100mm MP @ MFD (torture test for vibration because the lens barrel extends far forward @ MFD) and a 70-200mm and haven't seen any evidence of shutter vibration, testing from 1/125 down to 1/6.
I belive he wrote from 180mm and upp. Look at the link before. The Leica 280 looked terrible and he used tripod
p.87 #3 · Sony A7 and A7r Full Frame with Canon Lenses
snapsy wrote:
Awesome. Does it support both AF/MF in the same "mode". One thing I don't like about the Metabones adapter is that you have to unscrew/rescrew the adapter with the button pressed/not-pressed to switch between AF and MF modes, vs changing that setting on the camera body.
Hmm. Well I tried it with the lens switch on AF, and then I moved the lens switch to MF. Then I moved it back to AF. It didn't want to seem to AF after that, but after depressing the shutter once it went back to the AF behavior without further issue. Didn't try changing any modes on the camera body yet.
p.87 #4 · Sony A7 and A7r Full Frame with Canon Lenses
I allways let the metabones in advanced mode for ever (no need to press the button at all) and af/mf on the Lens works without changing anything on the body. The only difference with metabones in manual mode is that you loose the auto zoom magnifier when turning the lens focus ring.
p.87 #5 · Sony A7 and A7r Full Frame with Canon Lenses
Fred Miranda wrote:
I just got the grip. Here is an image showing the grip + Metabones
I see you don't have the l bracket then /-). I will receive my grip tomorrow, it is on the road :-)
I may machine some stuff to handle this. Some clamps also may also this mounting with the clamp screw on lens side, but then I guess the grip will touch the head when looking up. (I'm thinking a rrs pro2b clamp would also such mounting)
p.87 #10 · Sony A7 and A7r Full Frame with Canon Lenses
Fred Miranda wrote:
Update:
I just received the Hejnar spacer for the Metabones MKIII adapter and it fits great. Aside from raising the adapter and adding compatibility to all Canon lenses, the Hejnar spacer accepts 2 screws making it a very solid solution for my L-braket. (See images)
The L-bracket I'm using is the Desmond-DAL-1. It's only $39 and I highly recommend it coupled with the Hejnar spacer. That is so far the best solution I have tried for the Sony A7R and all Canon lenses when using an L-bracket on the adapter itself (instead of the camera body)
This setup would make Rube Goldberg himself proud!
p.87 #14 · Sony A7 and A7r Full Frame with Canon Lenses
Matt Grum wrote:
Unfortunately it's not lossless so... worries.
Do they *have* something showing the difference where the data discarded somehow is affecting real wrold image quality? I know we all want our brick walls as detailed as possible and our house cats one eye razor, razor sharp, but...
p.87 #15 · Sony A7 and A7r Full Frame with Canon Lenses
Sony uses cRAW. It can be described as a "visual" lossless compression but technically it is indeed lossy.
The algorithm is clever and adaptive and I have never seen any evidence that it affects IQ when comparing to a truly lossless RAW format. It should not affect dynamic range or tonal range either.
The benefit is getting 40-50% smaller files when comparing to the original. My A7R files never pass 37.4mb and go as low as 36.9mb...So pretty much averaging 37mb...
The downside is that many photographers feel skeptical using a "lossy" format and would rather trade it for bigger files and full RAW.
It would be great if Sony offered lossless RAW as an option in a future firmware.
Fred
I also got their announcement email. And yes, I agree with you, too, it is a tad pricey.
It looks great actually and it seems to add a tad more gripability (is there such a word ?) since it extends the grip a little. But frankly I question the merit of an L bracket for the camera itself. For rangefinder lenses since most of them are small, it would be fine to mount the combo on the tripod using the L-bracket. But I am not sure about mounting largish and relatively heavy lenses, like the Canon 17mm or 24mm TS-E or 85mm f/1.2 using that. I would rather use the tripod collar of the adapter for that purpose. Plus, from what I gather, the shutter vibration issue would be minimized, if the combo is mounted on the adapter collar, if there is any issue, that is, although the jury is still out in that aspect. Does it make sense?
?) since it extends the grip a little. But frankly I question the merit of an L bracket for the camera itself. For rangefinder lenses since most of them are small, it would be fine to mount the combo on the tripod using the L-bracket. But I am not sure about mounting largish and relatively heavy lenses, like the Canon 17mm or 24mm TS-E or 85mm f/1.2 using that. I would rather use the tripod collar of the adapter for that purpose. Plus, from what I gather, the shutter vibration issue would be minimized, if the combo is mounted on the adapter collar, if there is any issue, that is, although the jury is still out in that aspect. Does it make sense?