What ISO to keep on A mode?

Started Apr 21, 2014 | Questions thread
Aku Ankka
Aku Ankka Contributing Member • Posts: 591
Re: Typically ISO 100 with caveats

D Cox wrote:

Aku Ankka wrote:

The lowest (non-extended) ISO possible gives the best image quality. Typically this is ISO 100. The reason is that the more light you collect, the better the image's signal-to-noise-ratio will be, ie. the less noise there will be.

If you need to stop motion or camera shake, you may be adviced to use a higher ISO.

You will only get the best image quality at ISO 100 if you are using a tripod. Even a tiny amount of motion blur takes the edge off.

He specifically talked about non-moving objects. Also I mentioned camera shake.

Anyhow, if you shoot outdoors in decent light, or use flash, the ISO 100 will be the best option almost always without a tripod - difference of 1/500s and 1/2000s when shooting with the kit lens at a stationary object makes zero difference other than the first captures more light and allows for better image quality. Of course there are exceptions - shooting with a 500mm f/8 mirror lens migh be best served with ISO 400 or even more.

But your blanked statement is just way wrong and bad advice.

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