Some of my macro
Feb 15, 2012 03:10:14 #
I used a 30mm macro lens for these. I find at 30mm, it is way too constricting.
Feb 15, 2012 12:53:35 #
tainkc wrote:
I used a 30mm macro lens for these. I find at 30mm, it is way too constricting.
A few common restrictions of short macro:
1.) To obtain 1:1 mag (life-size) with a 30-mm macro lens requires a working distance (WD) of approx. 45-mm (1.75-inches).
2.) Physically difficult to provide adequate light to subject (natural, continuous artificial, or speedlight) at short WD.
3.) Potential of "barrel distortion" at short WD.
Feb 15, 2012 13:13:54 #
Nikonian72 wrote:
A few common restrictions of short macro:
1.) To obtain 1:1 mag (life-size) with a 30-mm macro lens requires a working distance (WD) of approx. 45-mm (1.75-inches).
2.) Physically difficult to provide adequate light to subject (natural, continuous artificial, or speedlight) at short WD.
3.) Potential of "barrel distortion" at short WD.
Unfortunately, I already found this out. This is why I am saving up for a 100mm macro. I do have some screw on magnifiers that I can play with. They are not extension tubes. By the way, a guy on Craig's list had a very nice set of extension tubes for sale that fit Minolta lenses. They fit Minolta alright-wrong mount! I was in tears. The price was more than right.tainkc wrote:
I used a 30mm macro lens for these. I find at 30mm, it is way too constricting.
A few common restrictions of short macro:
1.) To obtain 1:1 mag (life-size) with a 30-mm macro lens requires a working distance (WD) of approx. 45-mm (1.75-inches).
2.) Physically difficult to provide adequate light to subject (natural, continuous artificial, or speedlight) at short WD.
3.) Potential of "barrel distortion" at short WD.
Feb 15, 2012 13:38:02 #
tainkc wrote:
Unfortunately, I already found this out. This is why I am saving up for a 100mm macro.
A 30-mm macro will work well as a vertically-mounted tabletop macro set-up, for documenting coins, stamps, etc., where you have complete control over lighting and all exposure factors.
Feb 15, 2012 14:01:01 #
Nikonian72 wrote:
A 30-mm macro will work well as a vertically-mounted tabletop macro set-up, for documenting coins, stamps, etc., where you have complete control over lighting and all exposure factors.
O.K. Thanks for the tip.tainkc wrote:
Unfortunately, I already found this out. This is why I am saving up for a 100mm macro.
A 30-mm macro will work well as a vertically-mounted tabletop macro set-up, for documenting coins, stamps, etc., where you have complete control over lighting and all exposure factors.
Feb 15, 2012 18:27:42 #
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