Critical focus

The portion of the picture that is optically in focus.

In a photograph, the area of critical focus is the portion of the picture that is optically in focus. This does not relate to the depth of field which describes apparent sharpness. Reducing the size of the aperture will increase the depth of field but the plane of critical focus will not change. The depth of field extends away from the plane of critical sharpness.

image
Critical focus
resources
  • Achieving critical focus on lynda.com
  • The key to critical focus on blackfilmguild.com
  • Do you really need an EVF for critical focus on your DSLR? - DSLR FILM NOOB on youtube.com
  • How to achieve critical focus? on photo.net
  • Depth of field and the importance of achieving critical focus on mingthein.com
source
Adapted from content published on wikipedia.org
credit
  • Image by Ɓukasz Rawa: public domain — from flic.kr
Last modified on September 6, 2020, 7:15 am
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