> > Here's how these images look like when opened in Photoshop: > > http://www.ndl.kiev.ua/downloads/elphel/image_jpg.png > http://www.ndl.kiev.ua/downloads/elphel/image_raw8.png > > So, not only images differ visually - even levels do look differently. > However, when I tried to use ImageMagick as you've suggested to convert RAW > to JPEG and different tool (IrfanView) for results visualization - they > match exactly indeed. > > I promise to never use Photoshop again for any kind of images comparison! >
Alexandre, it is still interesting - why Photoshop slightly scaled contrast one of the "raw" image. Histograms still differ, especially on the 255 level - but that is natural when you have some saturated pixels and minor variations in illumination change that last histogram bin. I used Photoshop too, and even then (in 2001) it had some nice features I'm still missing now in Gimp - possibility to open raw (like in the camera - array of values) images directly, and it was able to work with 16-bit images. Andrey
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