Iso

[Kirislin]

I notice alot of you who get fantastic results with your cameras use a high ISO even on sunny days. I thought you needed a higher ISO when the weather is dull. Can someone explain to me, I dont get it.

Edited November 12, 2008 by Kirislin

[Luke W]

I notice alot of you who get fantastic results with your cameras use a high ISO even on sunny days. I thought you needed a higher ISO when the weather is dull. Can someone explain to me, I dont get it.

You increase ISO when your selected aperture and shutter speed aren't providing enough light to the sensor.

So say you want to shoot a fast moving daschunds at 1/1000 and you want to get it sharp from head to tail. You're going to need a small aperture to get enough DOF. Let's say you need to shoot them at f/16.

At ISO 100 there's just not enough light, so you bump up the ISO.

Here's a decent exmplanation of ISO, Shutter speed and Aperture. Forgive me if I've been too basic.

http://www.photographyjam.com/articles/29/...perture-and-iso

[Kirislin]

Forgive me if I've been too basic.http://www.photographyjam.com/articles/29/...perture-and-iso

aah no, it's never too basic for me. thanks for the explanation.

[rugerfly]

Kirs, Im always using a higher ISO specially in crappy weather, for faster movement stuff though. I can afford to go quite high with a good lens, the 50mm is great for low light as someone wise here once told me. I can blow mine up too as I dont get a lot of noise with my camera. Some people may have their ISO on Auto, I hate auto.

[rubiton]

I ALWAYS start off using 400 ISO and if need be increase if the conditions become dark rather than sunny. 400 ISO allows you to use settings such as 1/1000th of a second and F8 and there is no 'grainyness' from that setting. Today I had it on ISO 400 for sunny and 640 for overcast.