In a message dated 5/27/99 10:49:01 AM Eastern Daylight Time,
bbbean@xxxxxxxxxxxxxx writes:
<< Unfortunately, the results were less clear for the 200/4 vs 200/5.
For tripod mounted shots, there's no question that my 200/5 was
sharper, and that f/8 to f/16 is this lens's optimal range . However,
I'm not sure how much of the 200/4's softness was due to vibration,
so I've done a round of hand held shots at optimum aperture to see if
the difference holds up. I suppose for completeness, I should also do
a few side by side monopod shots- maybe tomorrow...
BBB
>>
I would recommend some effort to isolate that vibration via some form of
passive dampening--socks filled with "washed" large grain sand or small
gravel placed across the body/lens interface and the tripod itself damped
with a bag or bags of sand. Lead shot could also be used in smaller
quantities.
Alex
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