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Chroma Noise Reduction in ACR

Photoshop Adobe Camera RAW: Chroma Noise Reduction

See the full details of noise reduction for a Nikon D810 file in diglloyd DSLR in D810 Chroma Noise Reduction ISO 3200 to 12800 (Otus Fruit):

Digital sensors generate noise (speckles, streaks, etc) for a variety of reasons. On this page the reduction of chroma (color) noise in Adobe Camera Raw is explored.

Noise reduction for chroma noise generally does not impact acuity / micro contrast, unlike the reduction of luminance (brightness) noise*. Thus, chroma noise reduction is a realistic approach to raw file conversion as a matter of course for high ISO images, improving the color purity and visual impact of noise while leaving acuity of fine details largely untouched.

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Diglloyd Making Sharp Images articulates years of best practices and how-to, painstakingly learned over a decade of camera and lens evaluation.

Save yourself those years of trial and error by jump-starting your photographic technical execution when making the image. The best lens or camera is handicapped if the photographer fails to master perfect shot discipline. High-resolution digital cameras are unforgiving of errors, at least if one wants the best possible results.

  • Eases into photographic challenges with an introductory section.
  • Covers aspects of digital sensor technology that relate to getting the best image quality.
  • Technique section discusses every aspect of making a sharp image handheld or on a tripod.
  • Depth of field and how to bypass depth of field limitations via focus stacking.
  • Optical aberrations: what they are, what they look like, and what to do about them.
  • MTF, field curvature, focus shift: insight into the limitations of lab tests and why imaging performance is far more complex than it appears.
  • Optical aberrations: what they are, what they look like, and what to do about them.
  • How to test a lens for a “bad sample”.

Intrigued? See Focusing Zeiss DSLR Lenses For Peak Performance, PART ONE: The Challenges, or (one topic of many) field curvature.

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