Exposures over 30 seconds on 5D3

Started Jan 21, 2013 | Questions thread
OP interpleb Regular Member • Posts: 174
Re: Exposures over 30 seconds on 5D3

boca wrote:

Hi there,

Pls send me your email address and I'll send you the spreadsheet.

Also check on android market, as it may be an app for that, I remember it took me a while to find this one.

Basically you need an app where you put the values of a corrected exposed image on a insane iso.
For example you say on your test picture you have a good exposure of 2s/2.8/25'600 and then in the second screen you say you want an iso 100 at f10 which will tell you you need an shutter of 105min.

The spreadsheet does the same thing!

Thanks very much again boca. I just found an Android app called "Exposure Calculator"


It doesn't have f/10, but for f/11 it comes up with 128 minutes which is near enough (and a lot longer than I am going to stand in a field for 1 exposure!)

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