Nikon PB-6 with PS-6 brand_Metz but the shutter speeds are

but the shutter speeds are good

This tube will give you an additional 82mm- a substantial amount when combined with the RB's already impressive built-in bellows extension

very light haze behind the front element

and it requires the Sony FE 28mm f2 (SEL20F20) lens to work

Nikon PB-6 with PS-6 brand_Metz but the shutter speeds areThe NIkon PB 6 is a sturdy late model bellows with autodiaphragm operation and a built in stage focusing system. Accepts any Nikon F mount lens; the camera end is a standard F mount but practical compatibility will depend on the shape of your camera (some bulkier AF and digital cameras will require an additional extension tube not included to clear the back of the rail). In excellent condition, with PS 6 slide duplicator unit and double cable release.