Newby with question about ISO Settings.

[durtralp]

Hi everybody,
New to the group and new to photography. Purchased a D90 the other day.

Question:Seems like the higher the ISO, the more flexibility one would have to select a wider range of Fstop and Shutter speeds. Why would one not move to the higher ISO's then as long as the noise doesn't get noticeable?
Thanks for your patience. I didn't see this directly addressed in the previous posts.

All the best,
Ralph

[OldClicker]

Hi everybody,
New to the group and new to photography. Purchased a D90 the other day.

Question:Seems like the higher the ISO, the more flexibility one would have to select a wider range of Fstop and Shutter speeds. Why would one not move to the higher ISO's then as long as the noise doesn't get noticeable?
Thanks for your patience. I didn't see this directly addresses in the previous posts.

All the best,
Ralph

You got it - noise. You will get the least amount of noise at the native ISO (100 or 200). Aboe that, you choose what is acceptable. - TF

[straightarm]

there might be situation where you actually want a long shutter speed, eg blurring water

a low ISO can help you achieve this

I generally use the lowest ISO that gives me acceptable shutter speeds and apertures

[gryphonslair99]

This may be a round about way to answer your question however I would suggest you buy this book. When you have a working relationship of Aperture, Shutter speed and ISO you will be in the position to create the looks you want and will understand how to make the compromises necessary to get a shot.

Photography is the art of painting with light. Rarely is everything in perfect balance so you must make some kind of compromise, be it very minor or not to get the look you want.