How many stops between two f/ratios?

Faster is better!

Ever wonder how much quicker you'll be able to able to image with a reducer? Considering a faster scope? Try our handy-dandy calculator to find out just how much time you'll be saving. Enter your two f/ratios for comparison in the fields below.

1 comment

  • Thank you for this tool. I’ve been searching online for this kind of tool and some were pretty difficult to use. I think I’ll bookmark this article :D

    Erik Winther

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