New 7D user

just a quick question. i recently purchased a Canon 7D with a Canon 70-200mm f/4 IS lens. for the most part, it's an awesome camera, however, when i use the zoom lens to take pics at my sons basketball game they come out grainy. i've tried playing around with the settings but i just cant seem to get a really crisp shot. could it be that the f/4 is not good enough and i would need to upgrade to a f/2.8? any help would be great.

1 Response

Ensure ISO isn't too high, check photo quality is set to Standard/Neutral. I have a Sigma 30mm Prime F1.4 which is a super quick lens and very sharp at 2.0-2.8 so maybe worth a punt! For walkround lens you are better with a 18-135 or equivalent

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