Leica User Forum - View Single Post - Will IR cut filters AND coding be necessary on longer lenses?

adan · 11/23/06, 10:39 PM

Since IR stain affects other colors as well as black, I suspect, especially for jpeg shooters, one would need a different color profile applied to pictures shot with the filters. One would not get cyan corner shading with the longer lenses, but might get a slight overall color shift.

(In fact, a slight or significant color shift away from magenta is what we WANT, is it not?)

E.G. I've done a Camera RAW calibration for the M8 "as is" and unfiltered, that does pretty well with color overall (not with the extreme purple shift in black) - but I expect I'd need a recalibrated, different profile saved for shots made with the filters. And so will shots processed in the camera.

I expect this is the kind of thing that will be addressed in the "Q&A memo" that will be part of Leica's full and official announcements Friday or Monday or whenever.

11/23/06, 10:39 PM	#11 (permalink)
adan Erfahrener Benutzer Join Date: 03/04/04 Location: Denver Posts: 1,140	Re: Will IR cut filters AND coding be necessary on longer lenses? Since IR stain affects other colors as well as black, I suspect, especially for jpeg shooters, one would need a different color profile applied to pictures shot with the filters. One would not get cyan corner shading with the longer lenses, but might get a slight overall color shift. (In fact, a slight or significant color shift away from magenta is what we WANT, is it not?) E.G. I've done a Camera RAW calibration for the M8 "as is" and unfiltered, that does pretty well with color overall (not with the extreme purple shift in black) - but I expect I'd need a recalibrated, different profile saved for shots made with the filters. And so will shots processed in the camera. I expect this is the kind of thing that will be addressed in the "Q&A memo" that will be part of Leica's full and official announcements Friday or Monday or whenever.