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Abbreviations

Model history (3)

Specification

Sources of data

• Minolta lenses: vision for the creative photographer booklet.
• Minolta Corporation Photographic Division 1981/1982 Catalog (March 1981).
• Minolta SRT cameras and systems.
• A guide to the Minolta SLR system of creative photography 803E-M1.

Manufacturer description #1

The 400mm f/5.6 Apo Tele Rokkor-X incorporates a fluorite element for eliminating the undesirable "secondary spectrum" that degrades images. It is ideal for long-lens work requiring particularly sharp definition, and attached with the special 2X Converter it becomes a top-quality 800mm meter-coupled super tele.

Manufacturer description #2

The 400mm f/5.6 and 600mm f/6.3 MD Apo Tele Rokkor-X lenses are incredibly sharp, thanks to their special optical design which employs a fluorite (crystalline calcium fluoride) lens element. The fluorite element reduces chromatic aberrations to a level that places these lenses in the "apochromat" category which yields maximum image quality. In addition to sharpness that is virtually unobtainable by conventional design, the Apo lenses produce images with excellent contrast and color quality. These characteristics are attributable to both the lenses' apochromatic design and the patented Minolta Achromatic coating.

Additionally, the 400mm and 600mm Apo lenses feature a tripod socket on a rotating collar for good balance. This collar allows the camera and lens to be rotated into position and locked securely at any angle.

While the 400mm accepts standard 72mm diameter threaded filters, the 600mm incorporates integral lens-element type filters which slip into a slot provided at the rear of the focusing ring.

The 600mm Apo is manufactured with an internal focusing system, making it lighter and more compact than a lens of comparable focal length. This system also allows the lens to focus closer, while the length of the lens remains constant during focusing.

For added flexibility, either lens can be used with Minolta's 300L Tele Converter which transforms them into 800mm f/ 11 and 1200mm f/12.7 super-teles, respectively, while maintaining optimum image quality.

Because of the outstanding optics and easy handling, the 400mm and 600mm Apo Tele Rokkor-X lenses are well-suited to sports, news, wildlife and other specialized long-lens photography that requires the sharpest definition in black-and-white or color.

Manufacturer description #3

The exceptional light-dispersing characteristics of a special crystalline fluorite element incorporated in this long-telephoto lens virtually control the entire spectrum of light to minimize the chromatic aberration so as to deliver an extraordinarily sharp image on film. Its high image quality places it in the "apochromat" category, the most highly corrected type. The special element and design also make it one of the lightest and most compact lenses of its kind, a natural for sports, news, wildlife and other specialized photography that requires sharpest definition. Furthermore, the 400mm Apo Tele Rokkor-X takes a specially-developed 2X Converter to enhance its versatility and usefulness. This converter is attached between lens and camera to double the focal length while retaining apochromatic image quality, yet adds only about 50mm (two inches) to the actual length. (The 2X Converter can also be used to double the focal length of most other Rokkor-X telephoto lenses.) This lens includes a built-in tripod socket and extendable lens hood.

Other super telephoto prime lenses in the Minolta SR system

Lenses with similar focal length