Nikon PB-6E brand_Pelican It can be used in

It can be used in full automatic "snapshot" mode

The Rodenstock Rodagon 50mm f2

67mm thread size

and they make fantastic all-weather cameras for rainy days or camping

The Lowepro EX140 is a compact camera bag with room for a compact DSLR or mirrorless camera and a few small lenses or accessories

Nikon PB-6E brand_Pelican It can be used inThe Nikon PB 6E is a bellows extension for use with the Nikon PB 6 bellows (sold separately), providing a total marked extension of up to 435mm. This extension does not do anything on its own: it needs to be used together with a PB 6 bellows or nothing useful will happen. But if you have a PB 6 and you need extra extension, here's the ticket. In excellent condition.