Originally posted by fizzbomb
What would the best setting be to stick to whilst I am in my 'green' phase?
Always a hard question to answer:
I suggest for exposure settings, you have manual ISO settings. So if you're outdoors in bright soon, you have it fixed at 100 or 200. If it gets shady, go to 400. Indoors, 800 to 1200.
If you use auto ISO, you don't know when it's changing, and why.
And with fixed ISO, you use Av mode, aperture priority mode, where you choose the aperture (which affects your depth of field) and the camera automatically selects your shutter speed. You wouldn't use this to shoot horses at the race track, but as you begin to learn shooting static, non-moving subjects, this is the best way to understand the relationship between ISO, aperture, and shutter speed:
It's these three things together that are interrelated for correct exposure.
Use a less sensitive ISO of 100 at F4, and switch it to more sensitive of ISO 200, and your aperture has to be twice as small, going to 5.6, to get the same correct exposure. And yeah:
F stops don't change exponentially. F2.8 lets in twice the light of F4. F4 lets in twice the light of F5.6. F5.6 twice the light of F8. F8 twice the light of F11. F11 twice the light of F16. F16 twice the light of F22.
It'll all sink in in time, so don't get a headache about it just yet.