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When I look though the view finder of my SLR the image is blurry but ok on the computer?
If your camera view finder appears unsharp however when the taken image is viewed on a computer monitor it appears sharp, you may find the cameras diopter correction has been altered. Most SLR units (and some compacts) have a diopter correction that allows you to correct for your eyes optical error. This is a helpful feature that allows you to focus with out your glasses.
The diopter is generally located next the view finder of the camera, it is labeled with a + - and will typically alter 2-3 diopter corrections. To alter you diopter remove the lens and move the adjustment diopter until the lines in the view finder appear sharp.
