[K-50] Ragged color passage

olm · 09-13-2016, 07:51 AM

Hi,
Look at these photos:

_IMG2434.JPG - Google Drive
_IMG3176.JPG - Google Drive

Download it, on first photo look to left down and left top corner on high zoom, do this also with second photo but look on place where sun light bordered with clear sky.
Those ragged colors looks strange. It's normal or problem with my sensor? These photos are jpg with 3 star quality.

**stevebrot** · 09-13-2016, 08:19 AM - **1 Like**

Welcome to the Pentax Forums!

My guess is that the gradation is artifact related to JPEG limitations and color space issues. Do you see the same problem if you shoot RAW (DNG) or change color space to sRGB? I noticed that both contrast and saturation were set higher than default. That may also create artifact. The exif metadata indicate that the file was written by Windows Photo Viewer. Was it edited after capture?

Steve

olm · 09-13-2016, 09:03 AM

I do all what you tell, also change contrast and saturation. Ragged colors still are on my photos. Photos weren't edited.

09-13-2016, 07:51 AM	#1
olm New Member Join Date: Sep 2016 Posts: 6	[K-50] Ragged color passage Hi, Look at these photos: _IMG2434.JPG - Google Drive _IMG3176.JPG - Google Drive Download it, on first photo look to left down and left top corner on high zoom, do this also with second photo but look on place where sun light bordered with clear sky. Those ragged colors looks strange. It's normal or problem with my sensor? These photos are jpg with 3 star quality.

09-13-2016, 08:19 AM - 1 Like	#2
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Welcome to the Pentax Forums! My guess is that the gradation is artifact related to JPEG limitations and color space issues. Do you see the same problem if you shoot RAW (DNG) or change color space to sRGB? I noticed that both contrast and saturation were set higher than default. That may also create artifact. The exif metadata indicate that the file was written by Windows Photo Viewer. Was it edited after capture? Steve Last edited by stevebrot; 09-13-2016 at 08:27 AM.

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09-13-2016, 09:03 AM	#3
olm New Member Join Date: Sep 2016 Posts: 6 Original Poster	I do all what you tell, also change contrast and saturation. Ragged colors still are on my photos. Photos weren't edited.

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