uhoh7
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 First Sighting: A7rii Thin filter in action | |
On a more interesting note, I received the A7 with Illija's new choice of ultra thin IR cut. I got it late today, and weather is coming in so it may be days before I can do any decent infinity testing.
However the biggest issue in my mind was: how can it be possible to cut IR with such a thin piece of glass? M8 was a fiasco using S8612 at .5mm in terms of IR. The most common indicator...and please anyone feel free to chime in here if I have this wrong or am leaving things out...is certain black fabrics which go magenta. You can google M8 IR and see lots of examples. Apparently this is also a big deal with certain video cameras, like RED and Blackmagic. It is one reason why there are filter stacks in DSLRs. It seems some corrections have bad side effects on skin tones.
I will get my act together and do alot more of this, but today I just threw a bunch of fabrics on a snowbank in the fading light and shot with A7.utv1 and M9. For now, that's what I will call this mod: utv1, for "ultra-thin version 1". BTW, this not just a S8612 or BG55 at .2mm. There is no way that would work. Glass manufacture is not standing still, is about all I feel free to say, and if you doubt that, google is your friend 
Anyway I decided to use M9 as the benchmark. It does have some IR issues, but obviously they have not been serious enough to prevent the camera's success. Nobody I know regularly adds any external IR cuts to the M9. So here are two shots one from each camera. Did I edit, yes. Nothing radical but don't let contrast make you assume the camera.
IR08 by unoh7, on Flickr
IR07 by unoh7, on Flickr
Does one or both of these show IR issues? Is one alot better? Excuse the pink snow, it was sundown. Can you tell which image is from which camera?
These are with 35 Skopar I think. Same lens on both cameras, it could be the 21, but I don't think so.
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