Thanks to Miguel Yatco for this cool graphic. He also posted the following notes on his blog - "Living in the Stills."
- The light meter is different from the exposure setting.
- Keeping your light meter at “0” doesn’t necessarily mean it’s the perfect setting. Just don’t stray too far from the “0”. Adjust to your liking.
- Positive numbers on your exposure setting will make your photos brighter.
- Negative numbers make your photos darker.
- Small numbers (like f/1.4) have larger openings, which let in more light.
- Big numbers (like f/16) have smaller openings, which let in less light.
- Seeing 100, 250, 320, etc. on your viewfinder means “1/(number seen)”, like “1/100”.
- Try not to use 1/60 or less when handheld, that’s when you use a tripod or look for something steady.
- Using longer exposure (slow shutter speed) will let in more light.
- Using shorter exposure (fast shutter speed) will let in less light.
- ISO is the sensitivity of your camera to light
- Lower numbers are less sensitive to light, which give smoother photos.
- Higher numbers are very sensitive to light, which give very grainy and noisy photos.