Canon EF 24-105mm f4L II IS lighting this might fit the bill

this might fit the bill

This tube will give you an additional 82mm- a substantial amount when combined with the RB's already impressive built-in bellows extension

but it's worth noting that the ISO selection dial does not lock

Replaced the rotten meter cover and replaced the dim top LED with a bright one

that's just the way it works

Canon EF 24-105mm f4L II IS lighting this might fit the billThe Canon 24 105mm f4L IS lens is a good quality full frame all around lens with a useful focal length range from wide angle to short telephoto plus a constant f4 aperture and an image stabilizer. In excellent cosmetic condition, with clean optics and good function. Includes hood.