Why higher ISO can be usefull

[Grandpaw]

I was talking with a friend of mine about why I like the higher ISO capability of the Nikon D90 over my great Nikon D80 that I am very happy with. The person that I was talking with said she has never used an ISO over 400 and didn't see the need for anything higher. I was telling her that sometimes you need a higher ISO even in bright daylight to get the picture you want and I found a good example with the picture below. I took this picture at 10:26 AM on a nice sunny day with a tripod. The settings were shutter speed 200 at F22 with an ISO of 640. By having the F stop on F22 to get the depth of field I wanted and the shutter speed of 200 to stop any movement of the trees tall grass the ISO needed to be on 640 to accomplish these settings. I realize that ISO 640 is not really very high but I hope that you see the point I am trying to make is that shooting in lower light situations are not the only time a higher ISO might be needed. If I was trying to get this same shot in the evening with a lot lower light the ISO would have needed to be much higher and the D90 would have handled it just fine.

The reason for this post is to make the point that higher ISO abilities can be helpful in other situations other than just in low light, Jeff