Did some test photos of sky with EOS350D digital camera.
All using 75-300 f/4-5.6 telephoto on objects near equator.
Max time for no trailing...
8" 75mm f/5 iso 400
4" 300mm f/5.6 iso 800
Obvious trailing...
8" 300mm f/5.6 iso 1600
My latest blog post: Problematic Ideas: Some people will read this and think, what's the problem here? (posted 2025-08-30). Warning: mysqli_connect(): MySQL server has gone away in /Library/WebServer/Documents/Owen2/Inc/Footer.m.inc.php on line 51
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