Zeiss-Ikon Nettar 518/16 studio This shade will fit most

This shade will fit most Zeiss C-type lenses with focal lengths of 80mm and up

If you need a loupe

sort of works

with some cosmetic wear from use

but you can rotate it so that the flash tube is vertical or horizontal- and it includes a diffuser panel for wide angle lenses (to 28mm)

Zeiss-Ikon Nettar 518/16 studio This shade will fit mostThe Zeiss Ikon 518 16 is a compact folding camera that shoots 6x6cm exposures on 120 rollfilm. It's equipped with a scale focusing 75mm f4. 5 Novar Anastigmat lens in a five speed Velio shutter. This Nettar is in excellent condition, with only minor cosmetic wear. Lens is clean, bellows are good, and the shutter works well through the range. About as close to pocketable as medium format gets.