Canon EF 100-400mm f/4.5-5.6L IS II USM cambo 5 lens has clean glass

5 lens has clean glass and a good shutter

and the viewfinder has a pretty decent coupled rangefinder

But that just means you can replace it with any nameplate you want

While it's maybe not the #1 best choice to take along on a brisk casual hike

Canon EF 100-400mm f/4.5-5.6L IS II USM cambo 5 lens has clean glassCanon 100 400mm f 4. 5 5. 6L version II lens for EF mount, in excellent condition. This professional lens gives exceptional reach and flexibility on either full frame or APS C sensor EF cameras. A three mode stabilizer tailors the IS response to specific photographer needs and environments. Clean glass and excellent function. Includes hood and case.