Sat 08-Dec-12 10:55 PM | edited Sun 09-Dec-12 02:36 AM by mkbee1
At macro distances: small apertures..F/16,22,32 if you got 'em!
Late to this discusion...newbie and all...90% of my macro shots are hand held, most with flash.
I use either the camera hot shoe or a Stroboframe bracket to raise my flash above the subject, and the bounce/swivel capability to point the flash directly at it. Then I use a bounce card or StoFen diffuser to soften the light a bit.
Either way, the flash is raised above the lens' axis, eliminating much chance of the shadow falling on the subject.
Ittl all the way, SC28 cord for the bracket or hand held off-camera work.
Would I love to have the macro goody I see the folks on CSI using? O my yes, but till I win the lottery, or am discovered to be the "long-lost cousin" my "field expedient" solution works just fine.
Diffraction...Yes, it's there, but is not a real-world problem. Bryan Peterson shows excellent examples of the real difference between mid and small apertures in his book, "Understanding Exposure". It's one of the best comparisons I have seen.