Canon camera manual How to find Canon camera model numberModel number can be found on the front side of the camera body near the lens.Data from:Canon Camera User Manual - Canon Inc. wwwn›Home›SupportYour Account. Login; Create an Account. Check your order, save products & fast registration all with a Canon Account × Solved: The manual focus ring on my 18 - Canon Community community.canon›Canon Forum›Camera›LensesThe manual focus ring on my Canon 18-135mm EF-S spins freely whether the switch is in the AF or MF position. It does not alter the focus. Auto focus works well.