p.155 #2 · Official: Sony A7 and A7R Fullframe Mirrorless
shelt wrote:
OK, adapter geeks, here's a study of blackout material reflectance. Lots of difference between things that should all reflect little light!
p.155 #4 · Official: Sony A7 and A7R Fullframe Mirrorless
It's also interesting that four coats of Krylon Ultraflat black paint reflects 3-4x the light of some of the better materials. I can't imagine where our shiny-barreled adapters would register!
p.155 #5 · Official: Sony A7 and A7R Fullframe Mirrorless
wfrank wrote:
Oh, realize I am late to the party but sorry to hear that Michelle. I never seen any of those now so well described reflections - as are visible in your test images too - but I guess I am too ignorant to get affected by them when they show (if they have so far, 500 images later). Or maybe the light here in this part of the globe isnt just able to show it
Regardless, sad to hear. I just left my 5D2 and if nothing else works I am more than happy to put my old Contax SLRs on it and will enjoy harvesting the extra DR in comparison. And regarding 5D2 people raved for at least 36 months about terrible banding when pushing shadows. It never stopped me from enjoying that camera. Anyway as usual, time will tell ...Show more →
Thanks Wilhelm, you know, now that my adapters & white ghosts are not making me more crazy, I am planning to keep the camera. Its just way too much fun with my OM 50/1.2. I don't know if I will ever need to take that lens off the camera. Though I would not mind trying another CY35-70 some day...
p.155 #6 · Official: Sony A7 and A7R Fullframe Mirrorless
Tariq Gibran wrote:
If it's solely an adapter issue, it seems fairly widespread (others experiencing issues) whereas this was not the case with the same adapters and Sony APS mirrorless (I used the 50 R on the NEX-7 with no issues). It could point to an inherent design problem with shoehorning a full frame sensor into the E-mount - one that in fact requires special attention and measures to be taken with native lens construction.
Anyway, it's interesting and informative to follow the trials, tribulations and general experiences of ye brave early adopters. Sony should give all of you a free lens for your research. ...Show more →
Interestingly, if you look closely, it looks like even the RX1's fixed lens has a square baffle that looks like it is on the inside of the last element, or maybe the edges of the last element are opaque?? Image from ephotozine:
p.155 #7 · Official: Sony A7 and A7R Fullframe Mirrorless
douglasf13 wrote:
Interestingly, if you look closely, it looks like even the RX1's fixed lens has a square baffle that looks like it is on the inside of the last element, or maybe the edges of the last element are opaque?? Image from ephotozine:
It would seem that maybe the extreme, shallow flange depth has something to do with the need for the baffle to be built into the lens, particularly with a FF sensor. With a DSLR or even a digital Leica M (I notice even the newer lenses don't have a baffle built into them for instance), the deeper flange depth must allow for the baffle to be essentially built into the mount.
p.155 #8 · Official: Sony A7 and A7R Fullframe Mirrorless
Michelle, thank you mucho for the "tutorial" I did need it and will now proceed.
It surprises me that blocking much of the formerly clear area does not affect images
p.155 #11 · Official: Sony A7 and A7R Fullframe Mirrorless
Here's a time-lapse with the a7R and 24-70 FE. You can download the shots, but the largest resolution is 1920x1200. EXIF has been stripped off, so you can't tell what FL and aperture was used.
I have this lens on preorder....wish there were more samples out there.
p.155 #12 · Official: Sony A7 and A7R Fullframe Mirrorless
dbehrens wrote:
Thanks. . . this is great info!! Looks like I need to take a trip down to Jo Anne's Fabrics.
Problem fixed! My wife has tons of fabric so we spent an evening going through her inventory and there was a very black velvet candidate. Its very easy at night to get an eyeball assessment of reflectivity by just holding the cloth near a bright lamp. However, I found a black sock that just knocked the socks off all the other fabrics on reflecting nothing. So I performed surgery on the sock and pasted it inside the adapter using Weldwood contact cement. The stretch sock fabric made it easy to cut/fit. Made some test shots today with my Leica 35-70 R f/4 at various settings in bright sun, snow and dark backgrounds and do not have any internal flares.
p.155 #14 · Official: Sony A7 and A7R Fullframe Mirrorless
Problem fixed for me as well! On my g90, gaffers tape fixed 95% of the problem on my Fotodiox adapter. I picked up a Metabones adapter, which is much more $$$, but blacked out very well internally. As an aside, it has a much better focusing ring. No internal flare issues at all!
Going forward, I suspect we are going to see a combination of better FF adapter "darkening" from vendors, combined with a lot of homemade remedies on cheap adapters.
p.155 #15 · Official: Sony A7 and A7R Fullframe Mirrorless
shelt wrote:
Problem fixed for me as well! On my g90, gaffers tape fixed 95% of the problem on my Fotodiox adapter. I picked up a Metabones adapter, which is much more $$$, but blacked out very well internally. As an aside, it has a much better focusing ring. No internal flare issues at all!
Going forward, I suspect we are going to see a combination of better FF adapter "darkening" from vendors, combined with a lot of homemade remedies on cheap adapters.
Shelt, can you post a picture of your gaffing? I need to work on my G90.
p.155 #16 · Official: Sony A7 and A7R Fullframe Mirrorless
Here you go (sorry about the poor product photography...). Basically, I put a loop of matte gaffer's tape inside the Fotodiox barrel. It pretty much did the trick. You can also see the good quality of the blackout material used in the Metabones on the right. Much harder to see...
p.155 #18 · Official: Sony A7 and A7R Fullframe Mirrorless
Video capabilities of the A7r
Anyone who is interested in the video capabilities of the A7r may find the following links enlightening:
Philip Boom the DP, Director, Filmmaker soon will be providing his review of how the A7r compares...
You may have to copy and paste the links to get to the video files.
Cheers
Even compared to the technical stuff.
I don't know if I will ever need to take that lens off the camera. Though I would not mind trying another CY35-70 some day... 
