Redfield or somebody used to have a rectangle shaped objective lense that I guess they marketed for having a wider angle of view.
I've had one in 2 3/4x5 power, screwed to a Weaver "Tip-Off" pivot mount on a Savage Model 99 carbine, chambered in .358 Winchester, for the past several decades. This rig makes for a superb whitetail deer/black bear set-up.
I have never seen another brand of scope configured the same way-that is, with a rectangular-shaped
objective lens. If others were actually constructed
this way, I'm very curious as to which ones they were.