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Old Pentax 100mm 1:2 Macro with tubes
Jun 18, 2012 14:49:08   #
hangman45 Loc: Hueytown Alabama
 
Decided to play with my old Pentax M 100 F4 Macro it gets pretty good results.





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Jun 18, 2012 14:52:18   #
Nikonian72 Loc: Chico CA
 
The bottom photo looks pretty close to 1:2 magnification (1/2 life-size) of this small skipper. The top photo looks like 1:1 mag (life-size) or even greater. What length tube used?

Exceptional detail in both!

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Jun 18, 2012 14:58:34   #
hangman45 Loc: Hueytown Alabama
 
Yes the top one is slightly over 1:1
The bottom one is slightly over 1:2
These were taken with 65mm of tube where 50mm of tubes would be 1:1.

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Jun 18, 2012 15:10:39   #
Nikonian72 Loc: Chico CA
 
hangman45 wrote:
These were taken with 64mm of tube where 50mm of tubes would be 1:1.
My tube set is composed of a 12-mm, a 20-mm, & a 36-mm. all three together = 68-mm. What combo are you using to get 64-mm?

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Jun 18, 2012 15:17:32   #
hangman45 Loc: Hueytown Alabama
 
Nikonian72 wrote:
hangman45 wrote:
These were taken with 64mm of tube where 50mm of tubes would be 1:1.
My tube set is composed of a 12-mm, a 20-mm, & a 36-mm. all three together = 68-mm. What combo are you using to get 64-mm?
13-mm, 21-mm, & 31-mm = 65-mm (I was going by memory instead of looking at the tubes).

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