It should also be noted though, that the vast majority of (WA or not) lenses that need LCC corrections are NOT compatible (mechanically) as to work with the GFX on a tech camera, while the WA lenses that ARE compatible with the GFX on a tech camera DOT NOT need LCC at all.
It should also be noted that ANY software correction (not only LCC) applied, is NOT without some penalty that affects image quality (to whatever extend) and should be avoided if this is possible.
Sorry, you totally lost me here?
What WA (I assume wide angle?) lenses ARE compatible on the GFX on a tech camera that you are referring to? Are these Tech lenses like Rodenstock and Schneider or Canon/Nikon lenses?
The Wide angle lenses I have used on the 50MP Sony are 28mm, Rod, 32mm Rod, 35mm Sch, 40mm Rod and 60mm Sch. IMO ALL of these require an LCC. Take any of these lenses past 5mm of shift on any tech camera or Aptus and the shifted part of the image is basically all red due to color cast. Not to mention 55 to 75% loss of saturation in greens and blues. I have thousands of files where I shifted the IQ150 and IQ250 on the tech lenses I have mentioned, and all reacted the same. The color cast is probably more extreme than on the 100MP Sony. There is no way you could correct this without a good LCC algorightim and only C1 has this.
The 35mm lenses adapted to the GFX should have better results I agree as they are all designed around a mirror box, thus will sit further away from the sensor.
The Sony 35mm chips in the AR7 and A7RII both have the exact same issues, as I have tested the same tech lenses on them via the Acra DSLR2. Color cast on extreme shifts (5mm and beyond is very harsh and will not be easy to correct without an LCC).
Don't get me wrong, not trying to rain on the parade. But all this talk on movements with the GFX, are not taking into account the massive amounts of color cast the 50MP Sony sensor has when shifted with a Wide. I feel that even the 60mm Schneider has too much to use without correction of an LCC (at least on the 50MP IQ150). Sure Fuji has made a marketing claim (just like they did about C1 support 2 weeks ago) that they have placed a Magic new array in front of the Sony 50MP with a different design for the micro lenses. I sure hope it takes all the color cast out, since Phase One has made it quite clear they are not willing to work on a partnership with Fuji.
Shift the 50MP past 5mm with 28mm, 32mm, 35mm, or 40mm and your image is basically red in the parts of the image shifted. Much more so than a CCD back shifted the same amount. This is fact, and it's been that way since the 50MP chip was first released. Which is more than likely why P1 never pushed this chip, 50MP Sony on tech cameras only on the XF.
Here is a simple screen grab from an IQ150 15mm of shift on 40mm Rodenstock. Without C1 or a similar program to fix this massive color cast, the shifted file is basically not useable. The LCC does not show the amount of loss in saturation on the same amount of shift with the Sony 50MP chip.
Paul Caldwell
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