(from DigitalTrends.com)
- If your subject is moving and you’re trying freeze the motion for a still, you’ll likely need a higher ISOsetting to compensate for the high shutter speed and ensure your image gets enough light
- If you’re going for more of a vintage aesthetic and want to add a little bit of grain to your photos, don’t be afraid to bump up the ISO a few notches
- If you’re using a tripod to stabilize your camera you can usually get away with a slower shutter speed, which in turn allows you to use a lower ISO
- If you’re shooting an image that doesn’t require a large depth-of-field, you can increase the camera’s aperture (thus allowing more light into the lens) and use a lower ISO
- If you’re shooting with artificial light (i.e., using a flash) you can typically get away with a lower ISOsetting