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Specification

Source of data

• Manufacturer's technical data.

Manufacturer description #1

Quantaray ad from the Popular Photography magazine (April 1981):

From Space to Close-up The 3" Quantaray Catadioptric 500mm f/8 "Micro-Cat" Takes Reality And Etches It On Your Film!

Never in the history of photography has there been a lens so small, so optically sharp, and so affordably priced in the super telephoto range - the Quantaray "Micro-Cat" - tomorrows technology for todays photographer! Smaller than some 135mm lenses, the "Micro-Cat" produces an image 10 times the image produced by your normal lens. This means you can: have thrilling head shots of animals in the wild or at the zoo; isolate the "decisive" moment in sports action; capture human interest photographs without having the camera physically intrude upon your subject; and deep space photography can be yours with results which will amaze you!

No of Lens Groups + Elements: 4-5

Nearest Focus (m): 2.5

Diameter (mm): 82

Length (mm): 82

Weight (g): 500

Filter Size (mm): 77 (F), 30.5 (R)

ND Filter(s): 2x 4x

Mount: T-2

Hood: M77 screw in

Manufacturer description #2

Quantaray ad from the Popular Photography magazine (August 1982):

The Quantaray Catadioptric (mirror) Lenses are the telephotos for the photographer who demands an extremely compact and lightweight lens for field work. These Quantaray Lenses produce extremely sharp images and each comes with neutral density filters so exposure may be controlled through light levels as well, as shutter speeds.

500mm Technical Specifications: Diameter (mm): 82; Length (mm): 82; Weight (g): 500; Filter Size (mm): 77.

T Mount required for 300 and 500.

Typical characteristics of mirror (reflex) lenses

• Catadioptric system consisting of curved mirrors and optical glass;
• Much shorter, lighter and less expensive designs than conventional super telephoto lenses;
• Outstanding correction of chromatic aberrations;
• Since the aperture is fixed, neutral density filters are used to obtain a smaller aperture;
• Doughnut-shaped out-of-focus highlights.

From the editor

The lens was also sold under the following names:

• SUPER-DANUBIA 500mm F:8 MIRROR LENS
• HANIMEX 500mm F:8 MIRROR LENS
• LISTAR 500mm F:8 MIRROR LENS
• Marexar 500mm F:8 MIRROR LENS
• PORST 500mm F:8 MIRROR LENS
• QUANTARAY 500mm F:8 MIRROR LENS
• Starblitz 500mm F:8 MIRROR LENS
• TOYO OPTICS 500mm F:8 MIRROR LENS

Lenses with similar focal length