Therefore I consider myself just a beginner (RawTherapee is indeed amazingly powerful to say the least…).Īt work, as a plant pathologist, I take macro pictures, on a daily basis, with a Nikon D850 - ISO 64 (hardly any noise in the end…), k 2650 (Elinchrom lamp) on a tripod. Hello off, as a disclaimer, I am a long time user of RawTherapee but I never had the need to really get the most out of its denoise tools. Some general information has also been added to help better understand the colorimetry aspects of RT, Ciecam (and in particular the addition of Ciecam16), as well as some explanation of the various denoise options in the Detail tab, the Advanced tab (Wavelets) and Local Adjustments. Worth noting is a small improvement to the “Highlight reconstruction” - “Color propagation” performance thanks to the work Alberto has done on ART You can see a new worked example of the simultaneous use of “Log encoding”, “Ciecam16”, “ Excluding spot” and “Recovery based on luminance mask”. There have also been a number of updates to Rawpedia. A similar functionality exists for “GuidedFilter”.Īll modules are equipped with masks now (well, almost all of them) to allow the user to improve the deltaE selection. The LA Denoise module has been enriched with new features, such as: a hue equalizer, “denoise based on a luminance mask”, edge detection for DCT and “Recovery based on luminance mask” which allows you to differentiate between uniform areas and areas with detail when denoising. To use it is very simple in the menu “Settings” - Spot Method, choose “Full image”. All of the LA tools can be used this way taking advantage of LA’s deltaE (Scope) and masks. I have implemented an “automatic” full-image mode in the GUI so that you can use LA on the whole image. The sharpness of the images is limited by the grain of the slides.Some news about RawTherapee’s Local Adjustments and recent Rawpedia updates ![]() Nevertheless, the whole thing is still *much* faster than using a slide film scanner that scans the slide "line by line". A large chunk of time is spent waiting just to be sure that the exposure being set has been set. ![]() What is slowing things down quite a bit is that setting the exposure time isn't instantaneous. I've digitalised several thousand pictures at this point, here is one ![]() ![]() The lens is a 100mm Canon FD macro lens, together with some teleconverters. If the image is still too dark, I increase the exposure time, take another picture, and then combine both pictures with the enfuse utility. I therefore look at the histogram and adjust exposure for each image. Because slide film has such a high dynamic range, a single exposure time would not have worked well. I'm using an EOS M, together with a modification of ML where I've mapped certain PTP commands to take a picture and adjust exposure times. Here is a video of the machine in action I've been working on a machine for digitalising slide film for a while, and it has reached a point where it is working very well, so I thought I would share
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