DPReview.com is closing April 10th - Find out more

Minimum shutter speed to freeze the fish?

Started 8 months ago | Discussions thread
kelpdiver Veteran Member • Posts: 5,564
Re: Minimum shutter speed to freeze the fish?

then at least you have a lot of latitude with the ISO.   And if you're looking to freedive with a FF, I'm guessing your bottom time is pretty decent.   Are you able to come to a slow hold before you hit the shutter, or are you rushing them?   That could be the difference between 1/200th and 1/400th.     How wide is the focal range?

On scuba, I'd make my jump setting (starting point), f/8, 1/200th, 400 ISO.   If too dark in general, then try 640 and 800.   If I'm able to get to the fish without freaking them out, lower to 1/100th if I can, or to f 5.6.  The bigger the fish, or the closer I could get, the less likely I can get away with the wider aperture.   But with a fisheye, you can often do fine with very open lenses.

I prefer manual over Canon's auto for ISO, A or S, but lighting is more predictable on scuba and there's more time to meter.   Your lighting will be more variable as depth varies.  So maybe that means setting your min speed and max acceptable ISO and letting A drift.

Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow