Mamiya RZ67 AE Prism Viewfinder (Model 2) projector up to 3kg (though Manfrotto

up to 3kg (though Manfrotto tends to be pretty conservative with load specs)

Olympus Digital 40-150mm f3

The Rodenstock Radionar 105mm f4

This extension tube provides a slightly inexplicable 200mm extension for LTM/39mm threaded lenses

Zuiko Digital ED 40-150mm f4-5

Mamiya RZ67 AE Prism Viewfinder (Model 2) projector up to 3kg (though ManfrottoThe Mamiya AE Prism Viewfinder (Model 2) fits the RZ67 medium format camera and provides a slightly angled eye level view of your focusing screen plus metering and autoexposure control. Yes, it's kind of awkward to hold an RB RZ at eye level, but sometimes it's nice to have the option. In good cosmetic condition, with some finish wear; there is some dust and spots of mildew in the optics. Function is good, though!