On 06/02/2015 12:40, Björn Sonnenschein wrote: > Hi all, > If DR200/DR400 is used on Fuji X-Trans Cameras like my X-E1, the ISO value > actually used will be 1 (2) ev steps lower than the one written to the exiv > files. So ISO 800 with DR400 will show as ISO 800 in the exiv, but actually > the image was captured at ISO 200. Does the Profiled Denoise module take that > into account? That tought came up when I was profiling my camera today... I have this same issue with the XE2. The fact is that if you do a DR-400 picture, it is taken at 200 ISO, but underexposed 2 stops. So in order to have a correct picture in darktable, I have to raise the exposure by 2 stops, and modify my basecurve to compensate in the low-light areas. So effectively, the highlights are at 800 ISO, not 200, as their exposure has to be compensated for.
> > Also, it seems that even with DR100, ISO values above 1600 are in fact > captured with ISO 1600, so that for example ISO 6400 with DR100 looks exactly > like ISO 1600 with DR100 or ISO 6400 with DR 400 or DR 200. Right too. Over 1600 ISO, Fujis only raise exposure through processing, so what you get in the RAW is a 1600-ISO picture. ------------------------------------------------------------------------------ Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ darktable-devel mailing list darktable-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/darktable-devel
