Hi folks
Recent discussion on the OM focussing stage and rail has sent me thinking;
especially having mentally absorbed the findings of Gary Reese (and many
others including my old friend John Johns whose book I have mentioned in
the past) with regard to firm stability of camera and lens set-ups.
Gary has revealed how vibrations on exposure in the camera - lens system
degrade images, and described ways to reduce this degradation.
John showed how necessary it is for quality images in telephoto photography
to have the camera as close as possible to the apex of the tripod, and the
tripod set up (and we now know "weighted" also as necessary) to minimise
vibration and movement.
In my opinion (can others comment here?) due to the magnification,
enhanced stability of the photographic set-up is very important for
macrophotography too.
So - using a focussing rail and stage can lead to camera instability
especially when extended. Sometimes when shooting natural topics, this
combination makes it possible to take shots that otherwise would be difficult.
But for subjects that don't have movement restrictions, what I see will be a
better method for best image quality, will be
1) stabilise the camera and lens as well as possible close to the tripod apex.
2) use the focussing rail and stage to carry the subject and move the subject
back and forth to attain best focus.
$0.02
Brian
< This message was delivered via the Olympus Mailing List >
< For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
< Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html >
|