I opened up the case of a Canon EF 600mm f/4L IS II USM lens, and found a piece I don't remember from other lenses. It looks like an extra tripod foot, much shorter than the one attached to the lens. What is this for?
Thanks! Now that I know what it's called, it's much easier to find information.
I didn't realize you needed a different foot for monopods. The manual says you should not switch foots yourself; it should be done at a Canon service center.
I'm not planning to use the monopod foot, but what if I want to use a third-party foot? RRS, say. Can I do it myself? I always have before, but apparently this lens is different.
I put the RRS foot on my 600 II myself, in complete defiance of the instruction booklet.
It's four screws with many threads, you'll feel if it loosens a bit, or if you're concerned, use a little Loctite Blue 242 on the screws (I didn't, no issues to date).
I use the RRS foot with both my gimbal and my monopod tilt head.