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DPChallenge Forums >> Photography Discussion >> Physics of Focus....opinions wanted
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06/24/2006 09:44:07 PM · #1
Quickly...

D70 with 105mm and/or 60mm f2.8 macro lenses.

Many macros come out great.

Some, when subject is very small (3 spiders to a US dime) can't seem to get to focus well.

Use tripod...no tripod...SB800 flash...on cam and/or remote. Appetures from 2.8 to 42....shutter from 5secs to 1/1000 and all are blurry on the "face".

Do I need a $3000 lens? Would a 10mp cam be better at the small things?

Comments wanted !

Skid
06/24/2006 09:46:42 PM · #2
I have found that when taking close macros of small objects like that it is more effective to set the lens manually before shot to closest focus setting and move camera foward/back to get the portion you want in focus instead of other way around. Manual focus is a must IMO since DoF is so narrow/short - especially if subject is moving.

Message edited by author 2006-06-24 21:47:18.
06/24/2006 09:54:27 PM · #3
Thanks for the reply.

I do use the "rocking" technique when using cam in had. However, even when I do this or use a tripod, the "head" of the spider is OOF. Remember 3 of these spiders will fit on a dime so I'm wondering if getting sharp focus on head is impossible or extremly unlikely?!?!?

Originally posted by Alienyst:

I have found that when taking close macros of small objects like that it is more effective to set the lens manually before shot to closest focus setting and move camera foward/back to get the portion you want in focus instead of other way around. Manual focus is a must IMO since DoF is so narrow/short - especially if subject is moving.
06/24/2006 10:42:39 PM · #4
Persistance...I have had situations like this, in fact one today, but on one memorable one it was 167 shots before I got the exact focus I wanted with the DoF perfectly placed and everything else just right (also of an insect). Macros are a test of patience on anything other than a stationary shot with a tripod and even then it can take numerous shots before you get the result you want.
06/24/2006 10:44:31 PM · #5
Can you train the spiders??

Heck, I can't even get my cat in focus, so I'm of no help. I'd go with the "persistance" advice from Alienyst. :-)
06/24/2006 11:29:42 PM · #6
try a macro focusing rail and focus manually.

if that fails, sell your Nikon and buy a Canon. j/k

Message edited by author 2006-06-24 23:29:54.
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