ISO is NOT the ENEMY

[@BobN54]

The confusion about ISO (pronounced 'eye-soh' according to the International Organization for Standardization) is that people think that it's something that it is not - because so many popular sources get it wrong. ISO is just a guide to setting exposure - an 'exposure index' in the jargon. Exposure is determined by scene luminance, shutter speed and f-number and it's low exposure not 'ISO' that causes the noise. If you don't have much scene luminance, need a fast shutter speed and have as low an f-number as you have what are you going to do? You've got more chance of a workable shot if you press the shutter button than if you don't, so you press it and see what you can do with it.

[@richardOracleDBA]

Did you forget to turn the lights on?

[@tremaincheerful4189]

he forgot to raise his ISO ; )

[@ericaceous1652]

It is on m43 😄 But yes, there are some amazing denoising tools available these days.