Fujifilm X-Pro2 Graphite with Fujinon 23mm f2 lens mount_Micro Four Thirds but you won't get infinity

but you won't get infinity focus: this is mostly designed as an adjustable close-up tube

Zeiss Ikon Colora 35mm camera with 50mm f2

this one is such a viewfinder and should fit the bill

The Nikon D800 is a professional full-frame DSLR with a 36mp sensor

Fujifilm X-Pro2 Graphite with Fujinon 23mm f2 lens mount_Micro Four Thirds but you won't get infinityThe Fujifilm X Pro2 is a profesional mirrorless camera with a 24mp X Trans sensor and a hybrid optical electronic viewfinder. Compatible with the full line of Fujinon XF lenses, the X Pro 2 provides speedy phase detect autofocus; for use with adapted classic lenses or in manual focus mode, there are several options for focus assist, including peaking and a nifty video inlay on the optical viewfinder. This Graphite X Pro2 is in excellent cosmetic