Konica FL-Hexanon AR 300mm F/6.3

Super telephoto prime lens • Film era • Discontinued

Konica FL-Hexanon AR 300mm F/6.3
  • Announced:
  • · 1970
  • Production status:
  • ● Discontinued
  • Country of design:
  • · Japan
  • Original name:
  • · KONICA FL-HEXANON AR 300mm F6.3
  • Class:
  • · Slow full-frame super telephoto prime lens
  • · Professional model
  • System:
  • · Konica AR (1965)

Specification

Optical design:
35mm full frame
300mm
F/6.3
9 elements in 5 groups
2 FL
Konica AR [40.5mm]
8.2° (35mm full frame)
Diaphragm mechanism:
Diaphragm type:
Automatic
Aperture control:
Aperture ring (Manual settings + Auto Exposure setting)
<No data>
Focusing:
4.50m
<No data>
Focusing modes:
Manual focus only
Manual focus control:
Focusing ring
Physical characteristics:
560g
⌀65×146mm
Accessories:
Screw-type 55mm
Built-in telescopic round
Konica Hexanon Teleconverter AR 2X → 600mm F/12.6

Sources of data

  • Konica Hexanon AR interchangeable lenses booklet.
  • Konica Autoreflex T4 instruction booklet.
  • Konica Autoreflex TC instruction booklet.
  • Konica FP-1 Program instructions.
  • Konica FS-1 instructions.
  • Konica Hexanon Lenses booklet (1980).
  • Konica Autoreflex A3 booklet.
  • Konica Autoreflex system booklet.
  • Konica Hexanon Automatic Exposure Lenses for Konica Autoreflex booklet.

Manufacturer description #1

NEW: 300mm f/6.3 Auto Fluorite Telephoto

This is the amazing 300mm telephoto that's the size and weight of a 100mm! Rare fluorite crystal elements - protected by a special glass 'flat' - enable exceptional compactness and light weight as well as superior resolution, contrast, and color correction. One of the most advanced SLR lenses ever created.

Manufacturer description #2

The world's lightest 300mm lens at 19.8 ounces, fluorite crystal elements assure optimum optical performance.

Manufacturer description #3

Key Features:

  • Use of laboratory grown, crystal fluorite elements provides ultra light weight and compact size - weighs only 19.8 ounces and is only 5.7" long.
  • Special optical glass "flat", precisely ground and polished, provides ultimate protection for sensitive fluorite crystals.
  • Fully automatic exposure control with open aperture, thru-the-Iens (TTL) metering. Positive "AE Lock" prevents unintentional switching to manual operation.
  • Manual operation with positive click stops at full apertures.
  • Konica Color Dynamic Coating reduces flare and increases contrast and color saturation throughout the visible spectrum.

From the Popular Photography magazine (January 1971)

Photokina '70

Most interesting is the more modestly apertured 300-mm FL-Hexanon-AR f/6.3 whose first two elements are made from Konica-grown fluorite. How do you protect sensitive CaF2 surfaces from the twin horrors of greasy fingers and our sinned-against atmosphere? Konica does it by placing a clear-glass optical flat right in front, sealing the system.

Not counting this flat, that had to be computed into the design, Konica's crystal lens is a nine-element, five-group design. Behind the two air-spaced fluorite elements at the front are a cemented triplet, the aperture, and then two cemented doublets. Focusing is down to 15 ft., giving a maximum reproduction ratio of roughly 1:13.

Other super telephoto prime lenses in the Konica AR system

■Konica AR mount (5)
Konica Hexanon AR 300mm F/4.5A8 - 54.00m⌀72 1969 ●
Konica Hexanon AR 400mm F/5.6 UCA9 - 54.00m⌀77 1978 ●
Konica Hexanon [ARM] 400mm F/4.5 Type 1M4 - 48.00m-- 1965 ●
Konica Hexanon ARM 400mm F/4.5 Type 2M4 - 48.00m-- 1971 ●
Konica Hexanon ARM 800mm F/8M2 - 120.00m-- 1965 ●

Lenses with similar focal length

■Konica AR mount (6)
Sigma MF 300mm F/4.5 APO Multi-CoatedA8 - 62.50m⌀67 1980 ●
Sigma[-Z] MF Pantel 300mm F/5.6 [Multi-Coated]A6 - 56.00m⌀62 1975 ●
Soligor G/S Tele-Auto 300mm F/4.5 MC (s/n 3xxxxxx)A5 - 54.00m⌀72 ●
Tamron-F [Auto] 300mm F/5.6A4 - 42.44m⌀58 ●
Tokina 300mm F/5.6 RMC
akaTokina SL 300mm F/5.6		A6 - 34.50m⌀58 ●
Vivitar Auto Telephoto 300mm F/5.6 (s/n 37xxxxxx)A5 - 36.00m⌀58 1975 ●
■Interchangeable mount (22)
Century Tele-Athenar 300mm F/3.2 IIM4 - 26.00mS.9 1977 ●
Hanimex Tele-Lens 300mm F/5.5 [T]P4 - ?8.00m⌀62 ●
Heinz Kilfitt Munchen Tele-Kilar 300mm F/5.6P4 - 23.00m⌀68 1948 ●
Heinz Kilfitt Munchen Pan-Tele-Kilar 300mm F/4
akaZoomar Muenchen Pan-Tele-Kilar 300mm F/4		P4 - ?⌀88 1956 ●
Meyer-Optik Gorlitz Orestegor 300mm F/4P5 - 43.60m⌀95 1967 ●
Pentacon 300mm F/4P5 - 43.60m⌀95 1971 ●
Sankyo Kohki Super-Komura 300mm F/5 [Unidapter Auto]A5 - ?5.50m⌀62 ●
Komuranon 300mm F/4.5 K·M·CA? - ?4.50m 1974 ●
Sigma[-XQ] MF Macrotel / Telephoto 300mm F/4 [Multi-Coated] [YS]A6 - 54.50m⌀77 1972 ●
Soligor Tele-Auto 300mm F/5.5 Type 1 (s/n 1xxxxxx) [T-4]A5 - 56.00m⌀62 ●
Soligor Tele-Auto 300mm F/5.5 Type 2 (s/n 1xxxxxxx) [T-4]A5 - 36.00m⌀62 ●
Tair-3A 300mm F/4.5 [T]
akaТАИР-3 300mm F/4.5 А		P3 - 32.20m⌀72 ●
Tair-1A APO 300mm F/4.5 [T]P5 - 52.25m 1972 ●
Steinheil Munchen Tele-Quinar 300mm F/4.5P5 - 33.00mS.IX 1956 ●
Tamron SP 300mm F/5.6 MC Tele Macro 54B [Adaptall-2]A6 - 51.40m⌀58 1979 ●
Tamron 300mm F/5.6 CT-300 [Adaptall]A4 - 42.50m⌀58 1976 ●
Tamron Auto 300mm F/5.6 [Adapt-A-Matic]A4 - 22.50m⌀62 1972 ●
Tamron 300mm F/5.6 [T]P4 - 23.50m⌀62 1962 ●
Tamron 300mm F/6.9 [T]
akaSoligor 300mm F/6.9		P3 - 26.00m⌀58 1963 ●
Vivitar Tele 300mm F/5.6 [T]P5 - 44.50m⌀62 ●
Vivitar Auto Telephoto 300mm F/5.5 (s/n 37xxxxxxx) [T-4]A5 - ?6.00m⌀62 1968 ●
Vivitar Auto Telephoto 300mm F/5.6 (s/n 37xxxxxx) [TX]A5 - 36.00m⌀58 1976 ●

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