> RAW VS JPEG STACK

  • Posted on: 14 February 2019
  • By: tihomiry

NGC 7000, South America nebula in Cygnus, taken by me from NAO Rozhen. 2 shots composed by 45 frames @ 30s, ISO 51200 with SW 200pds and Pentax k-5. Same processing with DeepSky Stacker and LightRoom. It is obvious that JPG compression is blurring the details but not the noise even at 100% quality. Thus colors in JPG are easier to restore due to the less color depth – 8 bit per Chanel. The same as your screen.
So as conclusion I may say always use RAW. The difference is significant.

This is RAW stack

This is JPEG stack

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