Nikon 70-300mm f4.5-5.6G ED VR AF-S Nikkor lens mount_Bronica SQ Focal length is probably around

Focal length is probably around 75mm

which are things used in some rockets (but not fish) and will support the weight of a camera (also rocket yes

5 M-Dia lens for 35mm and a Schneider-Kreuznach 75mm f4

offering solid protection for smaller items

Nikon 70-300mm f4.5-5.6G ED VR AF-S Nikkor lens mount_Bronica SQ Focal length is probably aroundThe Nikon 70 300mm f4. 5 5. 6G ED VR AF S Nikkor is a full frame telephoto lens for the Nikon F mount. It has quick AF S focusing, an effective image stabilizer, and a convenient telephoto zoom range. Suitable for full frame or DX cameras, film or digital (as long as they don't need an on lens aperture ring, which this lens doesn't have.) In excellent condition, with original hood.