Colour blotch noise appears when shadow regions or underexposed areas break into random patches of red, green or blue. This DxO mini tutorial shows the exact method I use to eliminate colour blotching instantly using DeepPRIME XD2 — without damaging detail or introducing colour shifts.
Blotch noise happens when the sensor tries to amplify colour information in low light. Instead of smooth gradients, you get cloudy patches of colour. Traditional noise reduction tools often blur these patches but also soften detail and shift skin tones.
DxO PhotoLab and PureRAW analyse the exact sensor behaviour of your camera. DeepPRIME XD2 uses this data to remove colour blotching while keeping the underlying detail intact, giving a cleaner and more accurate image.
DxO immediately identifies colour noise patterns specific to your sensor and ISO level.
This removes both luminance noise and colour blotching simultaneously. XD2 is especially effective at cleaning up deep shadows, night images, underexposed portraits and high-ISO travel or street shots.
DxO’s colour noise algorithm works alongside DeepPRIME to neutralise cloudy patches while keeping tones accurate. Skin tones remain natural — no magenta or green contamination.
Your colour-blotch-free RAW file is now ready for final grading in Lightroom, Photoshop or Capture One.
You get perfectly clean shadows and natural colour transitions — ideal for beauty, portrait, travel and fashion work where colour accuracy is critical.
