A very basic question. I know that when a shutter is at 180 degrees, it is half open and half closed. My question is when a shutter is at lets say 210 degrees, is it 210 open or is it 210 closed.
Thank you for your time.
There aren't many camera manuals or books that don't have this information. My AC manual is an old 6th edition and it's on p 162 - but I'm sure that David Samuleson's manual and others include it too.
Now . .
>when you open your shutter to 90 degrees
. . .from what angle? If from 180 degrees, then you are closing it, not opening it, and you must open the aperture one full stop. If you go to 45 deg, it's another full stop.
Every time you halve the exposure (i.e halve the shutter angle) you must open one stop. Every time you double the angle, you close down one stop.
You probably need to get one of those books and look through it.
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