my Pentax K-x is acting up :( In low light scenarios I got heavy color banding and 'strange' image artifacts. You can find an example here: http://imgur.com/v0lzP
I took it at ISO 400 and the color profile is sRGB IEC61966-2.1 according to the Mac Finder.
I first thought it is the noise reduction, but the problems persisted also after I set the noise reduction to the least aggressive setting. Do you have any idea what could cause this?
p.s. sorry for the low aesthetic quality of the photograph.
File name: IMGP1612.JPG File size: 2644725 bytes (3072x2048, 3.4bpp, 7x) EXIF Summary: 0.3s f/5.6 ISO400 47.5mm (35mm eq:72mm)
Camera Model: PENTAX K-x Camera Software: K-x Ver 1.00 Sensing Method: One-Chip Color Area Focal Length (35mm Equiv): 72 mm
Exposure Time: 0.3 sec F-Number: f/5.6 Exposure Program: Normal Program ISO Speed Rating: 400 Exposure Bias: -1 EV Metering Mode: Center Weighted Average Flash: No Flash, Compulsory Focal Length: 47.50 mm Color Space Information: sRGB Image Width: 3072 Image Height: 2048 Rendering: Normal Exposure Mode: Manual White Balance: Auto Scene Capture Type: Standard Contrast: Soft Saturation: Normal Sharpness: Soft Subject Distance Range: Distant View
Chrominance Comp Positioning: Co-Sited Compression Scheme: JPEG Compression
And Some More Pulled Via exiftool:
Quality : Best Picture Mode : Program; 1/3 EV steps Noise Reduction : Off Dynamic Range Expansion : On Shadow Compensation : Strong High/Low Key Adj : 4 High ISO Noise Reduction : Medium; Inactive; ISO>800 Monochrome Filter Effect : None Monochrome Toning : None Cross Process : Off