WayneS writes:
<<The lens stays fixed coupled to a variable extension tube and since light
falls
<<off with extension, I am guessing the exposure is decreasing at close focus.
<<Would that make combining the shots trickier? having to adjust exposure value
<<before stacking, or use auto exposure in the camera
I have never yet managed a decent macro-landscape stack. I have had some
changes of lighting occur when outside hand stacking some macro shots.
I usually identically pre-process the raw files to tiff before stacking. If
hand stacking in PS it is more imp't to get the exposures about identical.
Most stacking programs can accommodate a moderate degree of difference
and will compensate with a check box. Macrolandscape is an extreme with
perhaps almost a 2 stop difference going from 1:1 to infinity. It might be
one instance when aperture priority mode makes more sense than Manual mode with
a manual stack ---this one on a bellows.
Mike
--
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/
|