cayenne said:
Ok, I"m looking at this one:
http://www.hejnarphotostore.com/product-p/ms4-2.htm
It says
" slider is equipped with quick release clamp" But I believe this refers to the clamp for the arca style plate or L-bracket.
I can't tell if there is a mechanism to release from the screw for faster adjustments....
Can you tell if this one has that or not?
I think I'm gonna get all RRS sticks and ball head, and L-Bracket, but I think I'll go for the Hejnar macro rails....just trying to figure best one to get to last me awhile.....
As far as I can tell, none of the macro rails with the micrometer or the *precision* screw have a quick release for fast adjustment. It would be best to defer to the manufacturer for specifics, but no mention of a quick release for adjustments is made.
Just a guess, but a quick release would seem to negate the benefits of a nice solid adjustment system.
You will have to "get it close" on the tripod head (or atop a slide with a quick release and an additional set of clamps), and then dial it in from there.
It would take a while to manually move through the entire 25mm or 50mm of travel, stop to stop... and a whole crapload of exposures if you really needed to do that.