Comments on: White-Mouth Dayflower: Wider or Tighter? A Depth of Field Question. And Focus Magnifier and Focus Peaking https://www.birdsasart-blog.com/baa/2021/06/26/white-mouth-dayflower-wider-or-tighter-a-depth-of-field-question-and-focus-magnifier-and-focus-peaking/ The blog of bird photographer Arthur Morris Fri, 07 Mar 2025 15:35:50 +0000 hourly 1 https://wordpress.org/?v=6.8 By: Arthur Morris/BIRDS AS ART https://www.birdsasart-blog.com/baa/2021/06/26/white-mouth-dayflower-wider-or-tighter-a-depth-of-field-question-and-focus-magnifier-and-focus-peaking/comment-page-1/#comment-1841498 Sun, 27 Jun 2021 17:46:36 +0000 http://www.birdsasart-blog.com/?p=74857#comment-1841498 In reply to Dane J.

Thanks, Dane. The distance is measured from the plane of the sensor to the flower. I’d estimate that as about 20 inches for this flower shot. The total d-o-f with a full frame body at f/9 is about 1/10 of an inch and that just about doubles at f/16 to almost 2/10 of an inch. So not microns.

with love, artie

]]> By: Dane J https://www.birdsasart-blog.com/baa/2021/06/26/white-mouth-dayflower-wider-or-tighter-a-depth-of-field-question-and-focus-magnifier-and-focus-peaking/comment-page-1/#comment-1841361 Sun, 27 Jun 2021 05:46:58 +0000 http://www.birdsasart-blog.com/?p=74857#comment-1841361 In macro work the lens is typically quite close to the subject. If the lens to subject distance is 12 inches for the 180mm macro lens, then the depth of field is a paltry 1/32 inch, for an aperture of f/9 and f/16. The depth of field does change and is greater for a smaller aperture, i.e. f/16 vs f/9, but the difference is measured in microns, which would hardly be noticeable in this subject.

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