![]() I really liked RawTherapee for my DSLR scans and it even has a Film Negative plugin but at the moment it only works on true RAW files, not what vuescan calls "raw file" (I understand this will be possible in next RT version though). I know others suggest to get the RAW file out of vuescan and continue with another software, but I don't really have good options on Linux. I would have hoped that there was some option to keep the inverted image but without introducing this compensation based on film type. Getting the right color when scanning negatives just doesnt mean Auto-leveling everything so you completely loose most of the characteristics of the emulsion. I don't really like to play around with this potentially destroying the quality of a specific film type. On the other hand, this seems like introduces some kind of compensation to account for a typical density distribution of B&W films (vuescan says most films are similar to that of T-Max, which I'm not sure is really true). One problem with this is that it is difficult to choose a CI value that works for all images. Scan as positive without color correction color management> none. Use Epson Scan 2 and Gimp instead of Photoshop. Alternative for color scanning: remove the film base color cast and do a pure scan no color correction or inversion. In fact, the documentation explicitly states that at this point it is best to select T-MAX 100 and then play with the CI (contrast index) options available to get a reasonable histogram. Appreciate this complete discussion of scanning. I initially followed some recommendations about using "generic color negative" but the blacks and sometimes the whites really go out of the histogram and get clipped, so I don't think that is the right approach. I still have color correction set to "none" (as this also modifies the curve). ![]() By combining the three channels in varying proportions we can create many different colours. ![]() ![]() These three colour channels represent the colours in the image. However, I found out (and confirmed) that there's a very sensitive step that completely alters the look of the image, which is the part where you select film brand/type/etc. Scanner Colour Management When a scanner captures colour information in an image it does so using three colour channels, red, green and blue. I excercised the "lock exposure" workflow and also found that (for my Minolta Dual Scan III at least) it seems it is better to scan in 48RGB (instead of 16bit grayscale, which seems to only choose one channel) and let vuescan convert to gray in software. Last night I decided to experiment a bit on vuescan on older B&W negatives as I always feel very unsure about the process to get a "decent" image. ![]()
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