13 hours ago
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Re: Real focal length and online focal length calculators
In reply to Detail Man,
7 months ago
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Detail Man wrote:
Do you find any errors in my mathematical calculations (with explanatory text as corrected in my subsequent post) that would indicate to you cause to consider an (undocumented by the manufacturer) change in the lens-system Focal Length from what Canon has publicly stated ?
At a very quick glance through I think there's a rather obvious error in your calculations, but it doesn't cause me to doubt Canon's focal length specification at all.
--
Andy Westlake
dpreview.com
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