New answers tagged high-iso
The ISO boost decreases noise on Canon cameras. The noise is because exposure is low (due to low light, for example, and inability to open the lens wider and/or use slower shutter speed, or lack of experience) which means the signal is low and drowning in noise.
It is not noise that matters but its visibility. Each ISO has inherent noise, greater than the one before it. However, the smaller the noise, the less visible it is. So, the acceptable ISO depends on the viewing or printing size. For a moderately large print, I would stick to ISO 800 or less on the T5. For a mid-size one, say a 12" x 8", possibly use ISO ...
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