Very nice indeed, but use ISO 800. If I remember rightly that is the sweet spot for the 550D, and my 600D. Your image is very dark for subs of that length, even though you are using a small scope. Lightened up I think it would be a superb image.
raymo
Last edited by raymo; 02-01-2019 at 07:07 PM.
Reason: correction
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