Samuli Vahonen
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eheffa wrote:
I love this image.
I think that It would make a magnificent large print.
-evan
Thanks Evan!
paah75 wrote:
Well, I've experienced sensor flare with 5D mkII too when there is highlights next to image edges.
I have shoot from 2008 to 2014 with 5DmkII (mainly with same lenses I now shoot with A7/A7r) and I never had ANY sensor flare except that strong light sources are reflected from sensor back to rear lens element (mirrored to "other side" of centerpoint of sensor e.g. if light source top left, then reflection was in bottom right).
paah75 wrote:
Also many legacy lenses (including some Zeiss) are much more prone to internal reflections because of not so modern coatings. I've found that my EF lenses are quite flare resistant.
I have quite the opposite experience with C/Y lenses vs. Canon EF, I had much less flare issues with C/Y Contaxes and backlight performance was major consideration for me to move away from EF towards C/Y lenses and later ZE/ZF series. Zeiss and Pentax have had really good coatings already on 1980s, much better than the EF-coatings before the nano stuff. However it's obvious that 1980s' Minolta, Canon FD, Olympus OM coatings are not as good as EF-coatings - however many of their lens designs are taking flare much better account than most EF-lenses. Flaring is not just fault of coatings, also the design of lens plays big role.
I only did EF primes (few normal, mostly L), no experience of nature shooting with zooms, they may be better, but I doubt so. I sold all Canons before they started doing "mkII" lenses with nano-coating, they might be better than 28/1.8, 35L, 45TSE, 50/1.4, 50/1.8, 50/2.5, 85/1.8, 85LmkII, 100 makro, 100L(it may have the nano thing ), 135L, 200L, 300L, 400L, if there happens to be mkII(or mkIII in case of 85) made with new coatings, all mentioned didn't have any special coatings or design for exceptional flare resistance. I shoot weddings and other "people stuff" with 17-40L, 24-70L, 70-200L, but there hardly were any challenging lightning conditions, and technical quality wasn't that important anyways.
paah75 wrote:
For all of my adapters including Metabones EOS-NEX mk III (which has sort of built in mask) I've now coated inner parts with self adhesive optical flock paper. For Metabones the most problematic part AFAIK are the sides of its inner mask which caused reflections. Black plastic or paint will reflect light anyway. So best solution would propably be a mask coated with black flock material.
Mask with no surface to reflect (as thin as possible) is also good choice, see how I masked Contac G adapter: link. There is no point to have longer than needed mask.
paah75 wrote:
Also, what kind of lens hood did you use for the lens on that example? I just began to wonder if using flock paper on inner surfaces of a lens hood would be helpfull too. Now as I think of it, Canon uses this sort of interior material for lens hoods and extension tubes as well. It might help to prevent sun light from bouncing back from lens hood to a front element of a lens.
I don't have hood for S-Planar - the front element is +50mm inside the lens, I maybe could use one of my Contax metal hoods, but I don't see any point doing it - and those metal hoods are very much eating reflections. Also Zeiss ZE/ZF series lenses have their metal hoods lined with some material, only bad thing with that is that it tends to wear out.
In this case it's 100% the camera, this is one of my favorite lights to shoot in (I have shoot thousands or tens of thousands photos with 5DmkII(and other Canons before that) and same lenses as with A7/A7r in these kind of conditions), and with majority of lenses in this scenario would at most create random red blob somewhere in image.
Also according to my studies (see Adapter flare demystified) majority of lenses, benefit only little from killing reflections using flock paper - the root cause is that light enters wrong place or wrong angle to "mirror chamber" (yes I know there is no mirror...), masking helps a lot. I have noticed that specially TSE-lens users have complained Metabones III reflections, but with my lenses Metabones haven't caused much trouble.
Other example - the red blob would most likely also be also visible with Canon 5DmkII, the white top left corner is just Sony generated issue:
"Hat trick #2 - no hat" - Leica Elmarit-R 28mm f/2.8 v2 @ f/11, 0.6s, Sony A7r @ ISO 100, B+W Circular Polarizer 55mm
"Hat trick #2 - with hat" - Leica Elmarit-R 28mm f/2.8 v2 @ f/11, 1s, Sony A7r @ ISO 100, B+W Circular Polarizer 55mm
(also my Leica-R adapters are masked, and polarizer makes no difference in this scene either, except saturation of some parts of the image)
Samuli
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I think it's only for that I may call a duck a duck, even if it is strictly not a duck 
