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My question is in reference to richieboone's question that began this thread, i.e., "Are most using stacked focus shots?"What is it about the images that you're asking about?
Hi Schuster - we've interviewed David about focus stacking for aurora photography recently (in "On Landscape") and he uses focus stacking quite a lot - mostly uses photoshop for blending.Any ideas about how David Clapp achieves images like these?:
Porth Nanven - David Clapp Photography
Hemsworthy Gate - David Clapp Photography
Porth Nanven - David Clapp Photography
We didn't really mention the low frequency effects too much, rather we mentioned a loss of overall contrast. We haven't quantified this but for our particular images, a small amount of 'clarity' (larger radius unsharp mask) and a small increase in contrast worked fine with the only problem being a small loss in shadow separation. This was mainly noticeable on f/22 but with f/16 the problem was hardly visible and our 'real world' test subjects couldn't tell the difference.There's more with you though, this techy test shows that with proper sharpening techniques you can sharpen f/22 images to very closely resemble f/8 or even f/5.6 images, and that with a D800 which has even smaller pixels:
The Diffraction Limit. How Small is Too Small? - On Landscape
(I think they underestimate the low frequency effects though which affects the global sharpness impression).
Have this test changed your view on which apertures you use when shooting digital? Ie do you use smaller apertures now?We didn't really mention the low frequency effects too much, rather we mentioned a loss of overall contrast. We haven't quantified this but for our particular images, a small amount of 'clarity' (larger radius unsharp mask) and a small increase in contrast worked fine with the only problem being a small loss in shadow separation. This was mainly noticeable on f/22 but with f/16 the problem was hardly visible and our 'real world' test subjects couldn't tell the difference.
I'd like to read what he has to say. Could you provide a link?...we've interviewed David about focus stacking for aurora photography recently (in "On Landscape")...
Hi,Have this test changed your view on which apertures you use when shooting digital? Ie do you use smaller apertures now?
f/22 on a 135 system corresponds to ~f/32 on digital medium format and f/160 on 8x10" , so it's quite powerful in terms of depth of field to be able to shoot at these apertures.