is it possible to use something like this on any camera, with any software, or does it require special functionality, like C1 has? I am thinking here of using it with a Leica M8 and Lightroom.
you can do it in Photoshop. Here's a modified copy of what I've once written on LuLa:
- Process the capture
- Process the LCC shot with the same settings (white balance, icc profile)
- Open capture in PS, add the LCC shot on a second layer
- Invert second layer with the LCC shot and set layer mode to "overlay"
... in this case the luminosity of the LCC shot is important - in mode "overlay" only middle grey (50% grey) is neutral. So vignetting is corrected as well here but the final image might get too bright or too dark.
To control luminositiy - i.e. just correct the colour cast - there is a second (and more accurate) way to do it but without correcting vignetting in the same step:
In Photoshop...
1st layer: capture
2nd layer: create new, layer mode "overlay", select "fill with 50% grey"
3rd layer: LCC shot, set layer mode to color
4th layer: merge 2 and 3, invert, set to "overlay" and delete or turn off layer 2 +3
The LCC in C1 is just working with Phase DBs, not with DSRLs.