http://www.markcassino.com/b2evolution/index.php/extreme-macro-crane-fly
Another test run with extreme macro - this one is a dessicated crane fly
that who's remains I found on a windowsill this afternoon. This was
taken with an Otamat 20mm f1.7 on extension for roughly 4.5x lifesized.
48 images stacked.
Question re macro focusing rails: I'm using a set of Pentax Macro
Focusing Rails III, like these:
http://www.pentaxforums.com/accessoryreviews/pentax-macro-focus-rail-iii.html
The only difference being that the rails I own have the focusing knob on
the right, not the left. I snap a 2 inch spring clamp onto the focusing
knob and that acts as a lever, and gives me pretty good focusing
accuracy. But, there is still a small bit of play in the rails that is a
problem at high magnifications. Any recommendations regarding good solid
macro focusing rails that operate smoothly? I've been considering some
Velbon Macro Slider rails but it's not clear that they would be better
than the ones I have, and it does not look like I could snap clamps on
the knobs to get the leveraging effect - the Velbon rails have two sets
of knobs that are very close together, hard to tell from photos how much
working room there is. The two inch lever provided by the spring clamps
that really makes a huge difference. Here's a (poor) photo showing how
I am using that with the Pentax Macro Rails III:
http://www.markcassino.com/b2evolution/index.php/2014/12/09/spring-clamp-as-lever-on-macro-focusing?blog=9
A little pressure on the end of the clamp / lever allows for very fine
adjustment of the rails, undermined only by some of the looseness in the
rails themselves. Twisting the knob without the lever does not allow for
very fine control.
Any thoughts or recommendations regarding macro focusing rails? For now
- I am not interested in the several-hundred-dollar auto stepping rails,
but good quality manual rails would be great....
Mark
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