[OM] Re: Zuiko 200/4.0

[Chuck Norcutt]

orava@xxxxxxxx wrote:

> I have wondered what is todays situation concerning zuiko 200/4.0 markets. I 
> haven't seen those for sale for a long time. Could you give me some kind of 
> hint on what is a "normal" price for that lens?
> 
> And also: Are there differences on the performance between different serial 
> numbers on this lens?

Did you read Gary Reese's tests at the link I sent you earlier?
<http://members.aol.com/olympusom/lenstests/default.htm>

There is probably a difference in performance between single and 
multi-coated versions.  However, the biggest performance item for the 
200 f/4 is taking all possible steps to reduce vibration.  For some 
reason the 200/4 seems to be especially sensitive to vibration from the 
mirror, shutter and aperture mechanism.  It is capable of excellent 
photos on a tripod but only if the camera's vibrations are damped.

Using mirror lockup helps but that only helps with mirror slap.  Other 
sources of vibration are the shutter and aperture mechanism.  The later 
model cameras such as the OM-2s and OM-4 incorporate mirror and aperture 
pre-fire in the self-timer which will reduce these sources.  Further 
dampening requires supporting the lens as Gary did with the Bogen 
telephoto support under the lens or else something pressing down on the 
camera/lens such as a beanbag or your hands.  Olympus's official 
recommendations when using a tripod is to forego the cable release and 
press firmly down on top of the camera with both hands while using a 
fingertip to release the shutter.  Flesh is a very good vibration damper.

Chuck Norcutt


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