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<blockquote data-quote="Eyelight" data-source="post: 363612" data-attributes="member: 24753">I could answer the question but would need your camera and lens to do so.&nbsp; Here is what I would do:Take a series of shots of the same flat subject at each aperture.&nbsp; I would use a tripod and flash to mitigate camera movement.&nbsp; A good subject would be a window screen as it is easy to focus precisely and do not refocus between shots. Viewing the images will give an idea of the acceptable range of aperture.Using the aperture at the center of the range from above, calculate the combination of distance and focal length to yield a DOF of 4+ inches.&nbsp; Take a series of photos using these combinations.&nbsp; The results should yield the acceptable focal length(s) for the lens.Doing these two test will give aperture, focal length and distance.&nbsp; So, maybe an hour and 20 photos will answer the question.&nbsp; The likely range will be f/11-f/16 and 150-200mm, but your lens might be special.Confirm the results by snapping a photo of a mock dragonfly.</blockquote>

[QUOTE="Eyelight, post: 363612, member: 24753"] I could answer the question but would need your camera and lens to do so. Here is what I would do: Take a series of shots of the same flat subject at each aperture. I would use a tripod and flash to mitigate camera movement. A good subject would be a window screen as it is easy to focus precisely and [U]do not refocus[/U] between shots. Viewing the images will give an idea of the acceptable range of aperture. Using the aperture at the center of the range from above, calculate the combination of distance and focal length to yield a DOF of 4+ inches. Take a series of photos using these combinations. The results should yield the acceptable focal length(s) for the lens. Doing these two test will give aperture, focal length and distance. So, maybe an hour and 20 photos will answer the question. The likely range will be f/11-f/16 and 150-200mm, but your lens might be special. Confirm the results by snapping a photo of a mock dragonfly. [/QUOTE]

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