Canon EF 24-105mm f4L IS brand_Photographer's Formulary This "black ring" version has

This "black ring" version has a black-painted aperture ring (as you may have surmised) which makes it a whole lot easier to read in bright light than the original reflective chrome version

12fps continuous shooting

and sharpness is as good as you'd expect

8 T* lens for Hasselblad FE-series focal plane shutter cameras

Canon EF 24-105mm f4L IS brand_Photographer's Formulary This "black ring" version hasThe 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.