I agree - go with the extension tubes. You will retain aperture control with EF lenses. Loss of autofocus is kind of a non-issue for macro, but AF can be useful if using another lens for 'closer' work... Also feels a lot more solid and weather/scratch resistant.


Another option from back in my childhood days was the 'trick' of putting a lens backwards on another lens using a ring with threads on both sides. This keeps the mount out of the equation - but you need a wide angle prime or something to throw on the front. In this case you'd keep control of the lens attached to the body.