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: https://i.stack.imgur.com/dhEUE.jpg
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?
Thanks!
p.s. sorry for the low aesthetic quality of the photograph.
[update]
EXIF:
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-Specific Properties:
Camera Model: PENTAX K-x
Camera Software: K-x Ver 1.00
Sensing Method: One-Chip Color Area
Focal Length (35mm Equiv): 72 mm
Image-Specific Properties:
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
Other Properties:
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