Tips for ISO

Why ISO?

ISO determines how sensitive the image sensor is to light on your image. Depends on the camera ISO ranges varies, Doubling the ISO number of the film doubles its sensitivity to light. So ISO 200 film needs half the light to take the same picture as ISO 100 film. ISO 400 film needs a quarter of the light that ISO 100 needs. In other words, if your camera would try to capture a particular low-light scene with a shutter speed of 1/15 second at ISO 100, you could capture it at 1/60 second at ISO 400.

Usage of ISO

ISO 100 -200:
1. When taking photograph outside in sunny condition

ISO 800:
1. If sky is overcast or evening time, use ISO 400-800
2. If you were not feasable to use tripord in mountain range  or museum or theatre..
3. Birthday party
4. When to avoid flash

ISO 1600:
1. Night time or in low light, if you don’t set then your photo will appear too dark

The above observation are upto my knowledge. Professional photographers excuse if  any mistake in above settings