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Re: [OM] RE: 90 vs 100 at infinity

Subject: Re: [OM] RE: 90 vs 100 at infinity
From: GFaulk7376@xxxxxxx
Date: Mon, 7 May 2001 10:56:26 EDT
In a message dated 5/6/01 12:44:57 PM Central Daylight Time, 
pcacala@xxxxxxxxxxxxx writes:

> More food for thought: any lens test I did greater than 500mm picks up
>  too much shutter vibration to be meaningful. I can see smeared vertical
>  resolution chart lines, whereas the horizontal are distinct. Based on
>  some wild horse shoots I just got back, shooting a tripod mounted 600mm
>  in the 1/125 to 1/1000th sec. range and tripping the shutter while
>  holding the body (as Olympus recommended in their earliest SIFs) will
>  result in pictures that far exceed what the SQF grades would lead one to
>  predict.  But the SQF testing of long lenses demanded speeds between 1/8
>  and 1/60.  At those speeds it is almost impossible to dampen shutter
>  vibration.  For one, you don't dare hold the camera and pick up arm
>  vibrations.  Not even the use of two tripods worked for me.

Hi Gary,

Which 600mm were you using? 

Gary Faulkenberry

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