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HereIAm@lemmy.world 1 week agoDo you have a good way to remember which way fast and slow f. stops go? I always have to trail and error when adjusting camera settings to go the right direction or especially listening to someone talk about aperture.
Krauerking@lemy.lol 1 week ago
Wider open you let in more light, and want faster shutter speed, more closed you get less light and want a longer shutter speed.
And f stops work backwards. Think of it as percent of sensor covered. The bigger the number the more covered it is and the smaller the hole/aperture.
HereIAm@lemmy.world 1 week ago
So Wide open = low coverage = small f stop -> lots of light -> “fast” shutter speed. And then the other way around. I think you finally worded it in a way it can stick in my brain! I like thinking about the f value as how much you’re covering the lens.
Zink@programming.dev 1 week ago
To add more specifics here for you, note that the f-stop is usually shown as a fraction, like f/2.8, f/4.0, etc.
So first of all, since the number is on the bottom of the fraction, there’s where you get smaller numbers = more light.
It’s also shown as a fraction because it’s a ratio, between your lens’s focal length (not focal distance to the subject) and the diameter of the aperture.
So if I’m taking a telephoto shot with my 70-200 @ 200 with the aperture wide open at f/2.8, that means the aperture should appear as 200/2.8 = 71.4mm. And that seems right to me! If you’re the subject looking into the lens the opening looks huge.
Krauerking@lemy.lol 1 week ago
I like trying to simplify stuff to basic language and I am happy it was helpful