I will use it when I am shooting birds and wildlife. I have found out that a noisy images is preferable to a blurry image. That doesn't mean I like hi ISOs.

To me an image shot in dim light at ISO 1600, which is then cropped is often too noisy. You will lose details in the fine feathers and features. All to often I am shooting a bird 50-100 yards away with a 500 mm lens. The combination of high ISO and cropping makes it hard for me to get an acceptable image that I am proud to show. Drop the ISO to 800-1000 and it is a world of difference.

Then it could be me and my technique....but we won't talk about that.

John

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