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CrazyLeicaFox wrote:
I remember reading that thread. I think that's also where someone (Vivek?) talked about doing their own sensor mod that reduced the stack thickness to just 0.7mm.
Here's a page all about the NKIR version 3 mod:
https://medium.com/攝影二三事/sonya7thinfiltermod-8276254606ba
Edit: for some reason fredmiranda.com doesn't like links, and you'll have to copy/paste this to get it to work.
That page is in Chinese, but my browser extension translator did a decent job, and the most important information is the pictures. I have many of the lenses he mentions there. Among my collection of rangefinder lenses is the Contax G 21 and 28; Zeiss ZM 15/2.8, 18/4, 21/4.5, 35/2.8, and 35/1.4; Leica SEM 21, Elmar-M 24, 28/2.8 ASPH, and 50 Summilux ASPH; and lots more, including film SLR lenses like the Canon 85/1.2 shown above by MAubrey.
Given that my focus is so totally on rangefinder and film lenses, I'm aiming for the very thinnest mod possible. It's quite possible I'll regret it later when I have to fiddle with IR-cut filters all the time, but right now, I figure the extra 0.15mm reduction below the 0.9mm offered by Kolari is worth it. ...Show more →
I am the writer of this blog, and i used NKIR mod thin filter since 2016, I have been used 0.75, 0.85mm, with/ without Sensor cover glass of A7R2/R3/M3 mod. For my expenience , around 90% RF lenses will have better result after mod. It seems that no need to do the thinest method for most of RF lenses. ONLY G16, Contarex 21/4.5, Minolta G-Rokkor 28/3.5, the lenses rear elements really close to Sensor needed thinest thin filter.
I needed to do more colour correction under thinest thin filter. 0.2mm thin filter will produce more red colour than 0.7/0.85mm thin filter...For me 0.7-0.85mm without cover glass is good enough for daily use without doing many colour correction...
For ZM 18/4, ZMC 21/4.5, ZMC35/2.8, ZM35/1.4 NO NEED to do the thinest method. The result have no big difference between ZM35/1.4 with/without cover glass mod camera.
As u can see, M240 with micro lenses 11663 @ F2 will have a better edges again A7R2 0.85mm without cover glass mod. But @F4/F5.6 , M240 and A7R2 mod will have close result for egde image.
For me, colour correction is more importance than thin filter thick
For most of time, i can direct use NKIR mod camera for daily use, But in very dark or very cloudy/ low night situation , using UVIR cut filter will have better results.
Now i USE UVIR cut filter as UV filter for daily use...
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