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From: tjo@gypsy.UUCP
Newsgroups: net.rec.photo
Subject: Tripods and Shutter Speeds
Message-ID: <24800003@gypsy.UUCP>
Date: Fri, 3-Jan-86 09:40:00 EST
Article-I.D.: gypsy.24800003
Posted: Fri Jan  3 09:40:00 1986
Date-Received: Fri, 10-Jan-86 23:32:10 EST
Lines: 21
Nf-ID: #N:gypsy:24800003:000:987
Nf-From: gypsy!tjo    Jan  3 09:40:00 1986


There's been some discussion recently about using tripods and the shutter
speed you need to approach tripod quality without a tripod.
What about cameras with leaf-type shutters, as opposed to focal plane?
Since the total time that the shutter is open is considerably less,
it would seem that you could get away with a slower speed and have 
less vibration than with a focal plane shutter.

Anyone have specific experience with this?  
Of course, just about every modern 35mm camera uses a focal plane
shutter.

Another suggestion: if your focal plane shutter moves vertically 
across the film (as in my Nikkormat), you can probably use 1/125 and
get stable results.  At least, you can most likely use one stop 
slower speed than with an equivalent horizontal moving shutter.

A final question: With a leaf shutter, why isn't the center of the 
negative overexposed, and the edges underexposed, since the shutter
leaves the center of the negative open for a longer time than the 
edges?