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Nikon D850 monochrome

Frame Averaging Case Study: Blending Frames

This technique requires some working knowledge of Adobe Photoshop, including layers and masks.

This page looks at a variant of frame averaging using exposure bracketing with the goal of blending frames for reducing noise and extending dynamic range, as applied in black and white from images taken on the Nikon D850 monochrome.

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  • 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.

Variants Blended,SingleFrame available in full article
(caption does not change as images change)
f8 @ 0.8 sec electronic shutter, ISO 31; 2019-09-26 18:07:25
NIKON D850 monochrome + Zeiss Milvus 35mm f/1.4 + filter B+W Dark Red 091
ENV: Twenty Lakes Basin, altitude 10350 ft / 3155 m, 53°F / 11°C
RAW: USM {12,50,0}

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