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question on focus merge


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Hi, I use a lot the phocus merge in AP to get dept of focus. Now my question is if it is better, for my purpose, to use a small F (example F4) with smaller (more) focus increments  or a large F (example F11). 

Furthermore is there a limit or optimal number of the shots that can be merged?

Thank you.

 

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8 hours ago, srg said:

Now my question is if it is better, for my purpose, to use a small F (example F4) with smaller (more) focus increments  or a large F (example F11).

Most lenses have what they call a 'sweet spot' that gives the best resolution as a compromise between depth of field and diffraction. It is typically around f/5.6 or f/8. You really need to try your own lens and see.

8 hours ago, srg said:

Furthermore is there a limit or optimal number of the shots that can be merged?

There is no theoretical limit, but unless you are doing micro or extreme macro stacking, then 10-20 should be adequate at the sweet spot.

John

Windows 11, Affinity Photo 2.4.2 Designer 2.4.2 and Publisher 2.4.2 (mainly Photo).

CPU: Intel Core i5 8500 @ 3.00GHz. RAM: 32.0GB  DDR4 @ 1063MHz, Graphics: 2047MB NVIDIA GeForce GTX 1050

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