On 2010-12-29 16:08 , Eric Weir wrote:
On Dec 29, 2010, at 5:21 PM, steve harley wrote:
How far away should the yardstick be? What will be the indication of back- or
front-focusing when I do this?
it doesn't have to be that far, but the farther away, the more precisely it will measure,
and a large aperture (shallow depth of field) helps; if the viewfinder shows you've
focused on 18", but the resulting image has 16" in best focus, you'll know that
the viewfinder is not accurate
Thanks, Steve. I check it out -- probably not till tomorrow afternoon.
Followup question regarding "correctability": If necessary, approximately what
would it cost to get it done?
someone else will have to answer that, just sharing received knowledge
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