![]() ![]() So I get a TIFF with linear gamma from Darktable and then everything after that is a reference to adjustment layers in Photoshop. But it looks like how it's converted will have implications for the results. I'm not sure what you mean about "fully manually" - you have to process the RAW file somehow. It looks to me like Darktable with WB turned off (and I think that's the key) gives good results when inverted. By "not good" I mean the excessive colour cast and other colour wonkiness I showed above. Before this I tried RAW Therapee and it did make a linear TIFF, I think, but the results were not good. I wasn't happy with the results from ACR (the linear profile you can generate is not really linear) so I went in search of another RAW converter that would convert RAW to a TIFF with linear gamma. So not quite the 5500K that film is probably designed for, but close enough. For that negative, a digital photo taken at the same time and with the same lens has the F16 patch coming in at middle grey brightness using the default Adobe profiles in ACR, and white balance for the shot is 5000, tint +4. It has lots of sliders but I haven't looked too closely at it in terms of assessing its colour accuracy or integrity. If I was doing a batch of negs then I'd get one of the plugins that interact with ACR.īTW, Darktable has a negative inversion function built in. But I think it's too slow a process for doing large batches as there's too much faffing about in Photoshop. In reality you wouldn't be carefully balancing from a grey reference, you'd be doing it by eye in search of whatever looks good to you. But Darktable with WB module turned off was good. ![]() Then I can see, for example, that ACR gave me results that are off, as did RawTherapee and Darktable with WB module turned on. That's so I can compare the results to a Noritsu scan and an RA4 print where I was just as meticulous. Yes, I'm being very meticulous about getting patch F16 bang on. The order I describe above is what worked for me. However, the order that you do them in seems to be important at least for some operations (specifically, the exposure adjustment layer should be on top of the invert layer, not underneath). So I'm using the gamma sliders of the individual channels of the Levels adjustment layer(s) to adjust exposure and global colour balance of the scan. Normally ProPhoto has a gamma of 1.8 but this is a special variant with a gamma of 1.0. ![]() The file is still in linear ProPhoto space. Of course, it's just a matter of getting used to a different process.Click to expand.So I get a TIFF with linear gamma from Darktable and then everything after that is a reference to adjustment layers in Photoshop. That is why I prefer to invert in PS, save to TIFF, import in LR and adjust. One thing I don't like of inverting files inside LR is that all the commands get inverted/screwed up. I downloaded the trial and I think it does work very well with the raw files from my Sony A5000. Lately I have been using a Photoshop action to invert the raw files, which works well but the output files usually need some later adjustments (I save them to TIFF and post process in LR) in particular it looks oto me this action oversaturates the blue tones. NLP, on the contrary, seems to produce very good results and very quickly. I have to say it is quite expensive, although one license can be used on two machines, I believe, so it might be shared.
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