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Frame Averaging: Post Processing Basics

This is a rough in-progress DRAFT, to be expanded and to include pictures and more later.

If your camera supports in-camera frame averaging producing a raw file, then the averaging has been done and there may be zero post processing effort—just work on the raw file as with any exposure.

The exception may be needing to overlay a single frame to deal with subject movement. For this reason, it is wise to keep the individual frames along with the averaged frames until sure there is no need for such overlay/masking.

Averaging the frames in the computer

Plans for this section include pictures of the process as well as a Photoshop script to automate it.

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  • Covers aspects of digital sensor technology that relate to getting the best image quality.
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  • 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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