What is the cheapest used Optomax 300mm f/5.5 in the UK?

The cheapest used Optomax 300mm f/5.5 currently listed is £13.99 at eBay, based on 8 listings compared across 2 UK retailers.

How many used Optomax 300mm f/5.5 are for sale in the UK?

There are currently 8 used Optomax 300mm f/5.5 listings available across 2 UK retailers on UsedLens, updated daily.

Used Optomax 300mm f/5.5 for Sale — From £14

£13.99 Low price

£55.00 High price

8 Listings

2 Retailers

2 Reduced

Great for: wildlife sport travel general

Optomax — long preset/auto 300mm f/5.5 telephoto in M42, Olympus OM, Pentax K and Canon FD

The Optomax 300mm f/5.5 was a long telephoto sold through UK dealers in the 1970s as part of the wider Optomax range of Japanese-made lenses. Pentax Forums lists it within a shared optical design also badged as Photax-Paragon, Promura, Kaligar, Hanimar, Exaktar and Eyemik, evidence of common OEM sourcing behind these house brands.

Both manual preset and full 'Auto' diaphragm versions were sold, built around the T2-mount adapter system as well as dedicated fittings; listings confirm M42, Olympus OM, Pentax K and Canon FD examples. Maximum aperture of f/5.5 is modest for the focal length, and close focus is limited by modern standards.

Optically it is a simple, long design rather than a corrected telephoto, so contrast and sharpness fall off toward the frame edges and it is soft wide open; stopping down to around f/8-f/11 improves results. It is long and comparatively light for its focal length, lacking a built-in tripod collar.

Used examples are inexpensive, commonly well under fifty pounds. Check the preset or auto-aperture ring for smooth, click-free travel, inspect the barrel for fungus, and confirm the correct T2 or dedicated-mount adapter is supplied for the intended camera.