Ricoh XR Rikenon 300mm F/4.5 APO

Super telephoto prime lens • Film era • Discontinued

Ricoh XR Rikenon 300mm F/4.5 APO
  • Announced:
  • · 1982
  • Production status:
  • ● Discontinued
  • Country of design:
  • · Japan
  • Original name:
  • · RICOH XR RIKENON APO 1:4.5 300mm
  • Class:
  • · Slow full-frame super telephoto prime lens
  • · Professional model
  • System:
  • · Ricoh K (1977)

Abbreviations

APO Apochromatic optical design.

Specification

Optical design:
35mm full frame
300mm
F/4.5
8 elements in 6 groups
Pentax K [45.5mm]
8.2° (35mm full frame)
On Pentax K APS-C [1.53x] cameras:
35mm equivalent focal length:
459mm (in terms of field of view)
35mm equivalent speed:
F/6.9 (in terms of depth of field)
Diagonal angle of view:
5.4°
Diaphragm mechanism:
Diaphragm type:
Automatic
Aperture control:
Aperture ring (Manual settings only)
6 (six)
Focusing:
2.50m
<No data>
Focusing modes:
Manual focus only
Manual focus control:
Focusing ring
Physical characteristics:
1050g
⌀74×193mm
Accessories:
Screw-type 67mm
Built-in telescopic round
<No data>

Source of data

  • Ricoh cameras booklet.

Manufacturer description

Surprisingly fast and well balanced, this telephoto lens lets you reach out an bring in distant subjects with the greatest of ease.

From the editor

Same lens as the Sigma 300/4.5 APO:

  • The XR RIKENON weighs 1050g and the Sigma is 10g lighter, while the dimensions of both lenses are identical: ⌀74x193mm;
  • Both lenses accept 67mm screw-in filters and are equipped with built-in telescopic lens hood;
  • According to Sigma, the optical formula is 8 elements in 6 groups, while Ricoh states it's 8 elements in 5 groups. Sigma's information should be correct, given the fact that the company is the actual developer of this lens.

Lenses with similar focal length

■Pentax K mount (10)
smc Pentax-A* 300mm F/4A8 - 74.00m⌀77 1983 ●
smc Pentax-M* 300mm F/4A8 - 74.00m⌀77 1981 ●
smc Pentax 300mm F/4A7 - 54.00m⌀77 1975 ●
Sigma MF 300mm F/4 APO Tele Macro ZENA10 - 71.20m⌀77 1994 ●
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 ●
Telezenitar-K APO 300mm F/4.5 MC
akaТЕЛЕЗЕНИТАР-К АПО 300mm F/4.5 МС		A7 - 63.00m⌀72 1988 ●
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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