ISO

The ISO measured the numbers of ‘stop’ like:

• 100
• 200
• 400
• 800
• 1600
• 3200

The lower ISO has less sensitive of the camera’s sensor is to light, while the higher ISO increases the sensitivity.

These will either have half or double of the light sensitivity. Each time doubling the ISO setting, the half requires the exposure of time and vice versa.

The higher ISO setting makes the sensor more sensitive to light, which means that take photos in the darker condition will no need to use flash or a tripod.

The characteristics of low ISO are:

• Low number
• Fine grain
• High contrast
• Maximum image quality

The characteristics of high ISO are:

• High number
• Large grain/noisy
• Low contrast
• Reduced image quality