disneydork06 wrote in post #2270257
so does anyone know why it turned out so noisy? i only shot at iso800. was it because of my tight cropping?
I'm gonna make up an answer here based on my experience, which I'm sure will not be complete, and I encourage any other photo-bitheads to weight in: noise is a function of several things: obviously ISO is and available light are a couple of them, but not the only ones. When you change the ISO of a digital camera, you are adjusting the gain of some of it's exposure circuitry, and like what happens when you crank your home audio system too high, disortiion and noise will result. When there is a smaller amount of image information, such as at low light conditions, you are giving the camera's intrinsic noise output a higher percentage of what ends up on the image. This intrinsic noise is always there, but with an adequately lit shot, the information coming from the image will be FAR greater, therefore making the camers sensor noise less nocitceable.
Here are a few good articles that describe noise, and what to do about it:
http://www.picturecode.com/noise.htm
http://www.photo.net/learn/dark_noise/
http://www.photoxels.com/tutorial_noise.html
My suggestion: try Noise Ninja (what I use) or something equivalent.
Here is your shot run through Noise Ninja very quickly, with any USM from NN turned off (since I'm sure you already sharpened the image).
BTW, when Noise Ninja opened your file, it recognized it as a 20D file, but said the ISO was 3200, so are you SURE you were at ISO 800? My guess is either you were at a higher ISO than you realized, or Noise NInja's ability to read beyond a Save for Web (don't recommend doing this, BTW, as it strips all EXIF data from your images, and when people try to help out, makes it harder) went astray.
I like your shots, though, especially for a first time out with a new sport and new lens.
Dennis
http://www.pbase.com/dmwierz45/sports_shots
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in 3 games. so i didn't get many photos. 
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