Things have been getting dull around here with everyone preoccupied with
Mike's questions.
Here's one thing Bryan Geyer has to say about tripods:
Why is a tripod essential?
Because blur due to lens movement is inevitable at any shutter
speed slower than 1/1000 sec., and because it promotes greater
care in composition. Handholding is strictly for dead photographers:
A human pulse beat will cause 200 microns (about 0.008 inch)
displacement for 1/10th second. Assuming a shutter speed of
1/250th sec., this movement alone will cause a 22% loss of
resolution with a system that is otherwise capable of reproducing
100 lines-per-mm (lpm). And at a shutter speed of 1/125th sec.,
this performance would degrade to only 53 lpm-a 47% waste of
what you purchased. (Refer John B. Williams: Image Clarity,
page 191)
If you don't recognize the name, he runs Really Right Stuff.
-joe
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