I've only used default colours, contrast & sharpness settings. Here is the final 170x100 region from the first of the 14 PEF raw files and from the output (stacked) DNG raw file, after developing in SP Pro. I selected Bicubic display resizing in PhotoAcute so the image is being smoothed, but it doesn't do much to hide the ISO 3200 noise in the K20D. This is at a 350% zoom since the region is only about 170x100. This is a capture from part of PhotoAcute's screen so the raw file has not yet been developed and the colours and details are only approximate. Now the comparison shot of the region under examination. It saves the output of the processing as a DNG/TIF/JPG etc., so you can then feed the stacked file to your favourite raw converter and develop it just like any other raw file.įirst off, here is one of the 14 raw input files converted in Silkypix Developer Studio Pro, to show you the 170x100 region that will be compared. When the program produced the stacked image you can compare it against the original and zoom in. PhotoAcute claims that it will correct alignment problems, so I did this burst of 14 shots hand-held. What I haven't tested yet is whether PhotoAcute will be happy with Pentax DNG files straight from the camera. With the K20D you can also do a continuous burst of up to 16 shoots if you use DNG, which is probably a good idea since the program wants DNG or JPGs as the input, and transparently invokes Adobe's free DNG converter if you feed it PEF files. Now I never go above ISO 1600, so this an intentional push. Since it was a bright sunny day, I photographed a Hi-Speed Continuous burst of 14 PEF raw files at ISO 3200, 1/1500s, F8 with half the frame in shadow. I wanted to see how well NR-through-stacking worked. This program does look worthwhile and you can create & upload test files photographed on your LCD monitor with your own lens and get it added to the profile. There are a number of things you can do without an exact match. I selected a Sigma 12-24/F4.5-5.6 lens from its list to use with my DA 16-45/F4. While it does have a K20D camera profile, none of the lenses match what I have. I saw that Falconeye recommended this program for image stacking so I downloaded a trial version to test.

Photoacute studio 3