How to set the ISO on a camera
What is ISO sensitivity?
Adjust the ISO sensitivity of your camera
It is possible to adjust the ISO sensitivity of the sensor of your camera through both automatic and manual modes. Each brand and model of camera offers different sensitivities; for example, the Nikon D700 will allow you to take photos with up to 25,600 ISO. At the same time, a Nikon D5 will be able to take photos with the highest ISO of 3,280,000.
ISO sensitivity numerically represents the level of this amplification. For instance, ISO 200 is twice as sensitive as ISO 100.
The ISO sensitivity
ISO 100 – ISO 200 – ISO 400 – ISO 800 – ISO 1600 – ISO 3200 – ISO 6400 – ISO 12800, etc.
Low ISO = less light <=================> High ISO = more light