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rudgej
16th of January 2006 (Mon), 15:44
I've been fiddling around with some extension tubes and trying to take some macro photographs (e.g. Silicon carbide (http://photography-on-the.net/forum/showthread.php?t=129376)), but as usual could not seem to get a depth of field any larger than a gnat's testicle. So I thought that I would make the most out of this with the following shot where I deliberately wanted as small a DOF as possible. Ironically, I had to make use of Photoshop to give the extra effect that I was after...

http://www.johnrudge.f2s.com/images/nonsite/photograph.jpg
adam*
16th of January 2006 (Mon), 15:45
Nice DOF!
rudgej
16th of January 2006 (Mon), 15:47
Thanks, but I did have to enhance it slightly. ;)
SWPhotoImaging
19th of January 2006 (Thu), 16:32
Which kind of gnat were you basing those measurements on ?

:)
rudgej
20th of January 2006 (Fri), 02:40
Which kind of gnat were you basing those measurements on ?

:)
I couldn't tell - the testicles were pin sharp, but the rest of it was so out of focus... :lol:
imagestablized
20th of January 2006 (Fri), 07:00
neat idea
rudgej
20th of January 2006 (Fri), 07:46
Thanks!
SWPhotoImaging
20th of January 2006 (Fri), 09:41
So, it apperas that in this case DOF can be measured in type points.

This looks like a dictionary page, so probably about an 8 or 10 point font, and the DOF is almost the full height of a line of text, so what would you say we have here, about a 9pt. DOF?
rudgej
20th of January 2006 (Fri), 10:45
9pt DOF :eek: Of course there would be the purists that say the DOF font should be Times New Roman, and those namby-pamby non-serif Arial fans aren't proper photographers... :lol: