Linhof Viewfinder hardcase focus and diaphragm action are

focus and diaphragm action are good

It includes a split-image focusing screen

but this head is made by them

The Nikon FM10 is a manual focus 35mm SLR with fully mechanical speeds from 1s to 1/1000s

and a Linhof groundglass back with fresnel

Linhof Viewfinder hardcase focus and diaphragm action areThis Linhof viewfinder is suitable for 4x5 cameras, with variable fields of view from 90mm to 360mm. It's adjustable for portrait or landscape shooting, too, which is handy. These viewfinders are mostly useful as a framing aid: you can use them mounted to the camera, or as a handheld "director's viewfinder." The view through the optics is satisfactory, though you'll need to refocus your eye to see the framelines in sharp detail: the viewfinder isn't