At 18:21 4/7/02, Mark Lloyd wrote:
Today I decided to bit the bullet and took in the tripod to take pics. And
the change is dramatic. Instead of 1:4 almost all of my high magnification
pictures came out tack sharp many sharper than even the sharpest of my
previous efforts.
[snip]
Yes, it makes a very big difference at the magnification levels you are
working with. Sorry I cannot help you with tripod advice; I'm still using
a Bogen 3221 for them (and yes it can be difficult)! A gear head may be
part of the answer, although not all of it. I have a pair of sliding
plates mounted at 90 degrees to each other. On the bottom of them is a QR
plate for the tripod head so I can mount and dismount it. I've found
mounting the camera to them very useful for making slight left/right and
fore/aft adjustments instead of moving the entire tripod.
It's amazing how tiny the DOF is, I have pics taken at full extension with
the 90mm macro at f8 of an Easter lily petal where there is nothing but a
thin band of sharpness.
Indeed! I must remind myself to stop down as much as possible if there's
any depth to the subject. I make several exposures with several apertures,
not to bracket exposure (shutter speed is also changed), but to bracket the
DOF which can be very difficult to evaluate through the viewfinder.
-- John
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