@JABrazer wrote:
Do you think it's the lens or the camera?
Make sure you have sufficient light.
Be aware of which AF, auto focus, point is the active one.
Make sure there is sufficient contrast at the active AF point.
I suggest using "One Shot" mode, not "AI Servo" or "AI Focus". Turn the mode dial on the top of the camera to the green square with an "A" mode, if it is set to any other mode, and try to take a picture outdoors in bright sunlight.
The lens focuses when you half press the shutter. Immediately pressing it all the way down may not give the lens a time to acquire a target, and lock focus on the target. Pressing the shutter halfway should cause the lens to focus, and make a quick, short and soft, whirring sound as the lens acquires and locks focus on a target.
Finally, make sure that you do not turn the focusing ring on the lens when the AF/MF switch is in the AF position. I know that it is very easy to mean to turn the zoom ring, but you turn the focus ring, instead. I've done it before, and doing so can damage inexpensive lenses that do not have what is known as "manual focus override."
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"The right mouse button is your friend."
