Lens For Canon 7d

David asks…Does the Canon 7D have a built in motor to focus lenses like the Nikon D90?I'm thinking about swapping systems, but if the 7D doesn't have a motor, its a deal breaker.mr.eos answers:When Canon introduced their first auto focus 35mm film camera they made the decision to place the focusing motor in the lens. They have kept with that philosophy ever since.Steven asks…How good is the 7D in noise performance?To me, noise performance is very important. I don't want my photography to

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