Trust but verify. I can't believe how difficult it was to find a formal
explanation. But even that was less than complete.
Chuck Norcutt
On 11/7/2014 3:38 PM, Moose wrote:
On 11/7/2014 7:37 AM, Chuck Norcutt wrote:
Finally. After looking at the manual for an 800mm Nikon (which says
nothing interesting) I found that the manual for the 800mm Canon
illustrates the use of the infinity mark for "normal temperatures" and
implies that there is more range for non-normal temperatures (which
are not defined) and refers to the rest of the range as the "infinity
compensation mark". Anyhow, you can see it here on page 6
<http://www.usa.canon.com/cusa/consumer/products/cameras/ef_lens_lineup/ef_800mm_f_5_6l_is_usm#BrochuresAndManuals>
These infinity markings are the same type as on the Tamron lenses
mentioned before but are not explained in any way by Tamron.
There you are then.
Trust The Moose
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