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[OM] Re: Mini Macro questions-Paging Dr. Focus

Subject: [OM] Re: Mini Macro questions-Paging Dr. Focus
From: usher99@xxxxxxx
Date: Fri, 16 Mar 2007 16:53:30 -0400
"DOF, I think Jan used this phrase and it made sense to me, is what is
acceptable. The further away I take a shot, the better it appears to me, the
closer I have the lens, the les depth I get, but the spot that is in focus
is superbly crisp. Just gets to, what is it you like or will accept. Me, I
want it all and I want it now.....but will just have to wait...."
 
 
Yes, Yes.  Further away will increase DOF at the price of reduced Mag.  I 
vaguely remember going through the calculations a couple years ago regarding 
DOF and FL.  An object taken with a 50mm lens say at 1 foot will have the same 
DOF as using a 100mm lens at 2 feet if taken at the same aperture.  I will 
await further comments from an obscure though very perspicacious colleague of 
Dr. Flash, i.e. Dr. Focus to confirm or correct me.  Thus a longer lens will 
get you working distance and background control though no change of DOF at the 
same magnification assuming the above is correct.
You  have already had much sage advice on the specific lenses as have I.  
Mike
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