smc Pentax-A 70-210mm F/4

Telephoto zoom lens • Film era • Discontinued

  • Announced:
  • · March 1983
  • Production status:
  • ● Discontinued
  • Country of design:
  • · Japan
  • Original name:
  • · SMC PENTAX-A ZOOM 1:4 70~210mm
  • Class:
  • · Slow full-frame telephoto zoom lens
  • System:
  • · Pentax K (1975)

Abbreviations

SMC Multi-layer anti-reflection coating is applied to the surfaces of lens elements. This anti-reflection coating increases light transmission, eliminates flare and ghosting, and maintains color consistence among all lens models.
A A manual focus lens with automatic maximum aperture indexing and automatic aperture control. Learn more

Specification

Optical design:
35mm full frame
70mm - 210mm [3X zoom ratio]
F/4 across the focal length range
13 elements in 10 groups
Pentax K [45.5mm]
34.3° @ 70mm - 11.8° @ 210mm (35mm full frame)
On Pentax K APS-C [1.53x] cameras:
35mm equivalent focal length range:
107.1mm - 321.3mm (in terms of field of view)
35mm equivalent speed range:
F/6.1 (in terms of depth of field)
Diagonal angle of view:
22.8° @ 70mm - 7.7° @ 210mm
Diaphragm mechanism:
Diaphragm type:
Automatic
Aperture control:
Aperture ring (Manual settings + Auto Exposure setting)
8 (eight)
Zooming:
Zoom mechanism:
Manual
Zoom control:
Combined zoom/focusing ring
Zoom type:
Push/pull (210mm → 70mm)
Zooming method:
<No data>
Focusing:
1.20m
1:4 @ 210mm
Focusing modes:
Manual focus only
Manual focus control:
Combined zoom/focusing ring
Physical characteristics:
680g
⌀72×149mm
Accessories:
Screw-type 58mm
Built-in telescopic round
<No data>

Sources of data

  • Manufacturer's technical data.
  • smc Pentax-A lenses operating manual.
  • Pentax lenses & accessories booklet (December 1986).
  • Pentax super A booklet (PUB. 06101) (May 1983).
  • Pentax A3 booklet (PUB. 08061) (January 1985).
  • Pentax cameras booklet (PUB. 06091, 40 pages) (March 1987).
  • Pentax Super Program booklet (PUB. 06191).
  • Pentax New "A" Series Lenses booklet (PUB. 06701) (April 1984).
  • Pentax lenses & accessories - A Comprehensive and Versatile Photographic System booklet.

Manufacturer description #1

Compact and equipped for automatic aperture control, this is an excellent zoom for all medium telephoto focal lengths and close-up macro photography. Combine it with the Pentax-A 24-50mm zoom and you can shoot almost any subject with automatic aperture control.

Manufacturer description #2

Macro setting of 70-210mm f/4 zoom:

The macro system of the 70-210mm f/4 lens functions when the zoom ring is adjusted to the 70mm focal length (green-coded), with the distance ring shifted to the Macro position. Follow the reverse procedure to release the lens from the Macro position. Maximum macro magnification is 1/4x at the extreme end of macro range, a film-plane to subject distance of up to 0.45m.

Pentax-A series

The third generation of lenses designed for Pentax 35mm SLR cameras with bayonet mount. Introduced with the Pentax super A in 1983.

  • Robust, all-metal design with recessed focusing distance scale;
  • Fully automatic diaphragm;
  • Support for TTL open-aperture metering;
  • Electronic contacts for transmission of aperture information;
  • "A" setting on the aperture ring for automatic aperture control in the Programmed AE and Shutter-priority AE modes;
  • Extremely accurate manual focusing with rubberized focusing ring;
  • Multi-layer anti-reflection coating.

Other telephoto zoom lenses in the Pentax K system

■Pentax K mount (11)
smc Pentax 45-125mm F/4 • Push/pullA14 - 111.50m 1975 ●
Takumar-A Zoom 70-200mm F/4 Macro • Push/pullA11 - 90.70m⌀58 1989 ●
Pentax-A 70-200mm F/4 • Push/pullA11 - 90.70m⌀58 1989 ●
Takumar-A Zoom 70-210mm F/4.5-5.6 • Push/pullA10 - 71.10m⌀52 ●
smc Pentax-M 75-150mm F/4 • Push/pullA12 - 91.20m⌀49 1979 ●
smc Pentax-A 80-200mm F/4.7-5.6A11 - 71.10m⌀49 1994 ●
smc Pentax 80-200mm F/4.5 • Push/pullA15 - 121.60m⌀52 1977 ●
smc Pentax-M 80-200mm F/4.5 [I] • Push/pullA15 - 121.60m⌀52 1978 ●
smc Pentax-M 80-200mm F/4.5 [II] • Push/pullA12 - 91.20m⌀52 1982 ●
smc Pentax 85-210mm F/4.5 • Push/pullA11 - 103.50m⌀58 1975 ●
smc Pentax 85-210mm F/3.5 • Push/pullA12 - 113.50m⌀67 1976 ●

Lenses with similar focal length range

■Pentax K mount (52)
Chinon Auto 70-210mm F/3.8 MC • Push/pullA12 - 91.20m⌀58 1982 ●
Cosina 70-210mm F/4.5-5.6 MC Macro • Push/pull
akaMiranda 70-210mm F/4.5-5.6 MC Macro
akaPhoenix 70-210mm F/4.5-5.6 Macro
akaVivitar 70-210mm F/4.5-5.6 MC Macro		A10 - 71.30m⌀52 ●
Cosina Cosinon 70-210mm F/3.5 MC Macro • Push/pullA14 - 102.00m⌀67 1978 ●
Kino Precision Kiron 70-210mm F/4.5 MC Macro • Push/pullA12 - 91.30m⌀55 1985 ●
Kino Precision Kiron 70-210mm F/4 MC Macro Type 1 • Push/pullA13 - 91.50m⌀62 1982 ●
Kino Precision Kiron 70-210mm F/4 MC Macro Type 2 • Push/pullA13 - 91.50m⌀62 1983 ●
P. Angenieux 70-210mm F/3.5A15 - 110.86m⌀62 1982 ●
Quantaray Auto 75-200mm F/4.5 MC Macro • Push/pullA12 - 92.00m⌀55 1981 ●
Ricoh Rikenon 70-210mm F/3.9 Macro • Push/pullA12 - 91.20m⌀58 ●
Ricoh Rikenon P 70-210mm F/4.5-5.6 Macro • Push/pullA10 - 71.14m⌀52 ●
Ricoh Rikenon P 70-210mm F/4-5.6 Macro • Push/pullA12 - 81.30m⌀52 ●
Ricoh Rikenon P 70-210mm F/3.9 Macro • Push/pullA12 - 91.20m⌀58 1984 ●
Samyang Auto 70-210mm F/4-5.6 MC Type 1 • Push/pullA12 - 101.50m⌀52 ●
Samyang Auto 70-210mm F/4-5.6 MC Type 2 • Push/pullA12 - 81.30m⌀52 ●
Komura-FX 70-210mm F/4.5 K·M·C • Push/pullA13 - 91.70m⌀58 1980 ●
Sigma-XQ High Power Zoom MF 70-230mm F/4.5 Multi-CoatedA13 - 102.00m⌀62 1975 ●
Sigma MF 70-210mm F/4-5.6 UC-II ZENA13 - 91.20m⌀55 1995 ●
Sigma MF 70-210mm F/4-5.6 UC Multi-Coated ZEN • Push/pullA13 - 91.20m⌀52 1989 ●
Sigma MF 70-210mm F/4-5.6 APO UC ZEN • Push/pullA14 - 111.20m⌀52 1992 ●
Sigma MF 75-200mm F/2.8-3.5 Multi-Coated III • Push/pull
akaQuantaray 75-200mm F/2.8-3.5 Multi-Coated		A13 - 101.20m⌀67 1985 ●
Sigma MF 75-210mm F/3.5-4.5 Multi-Coated III • Push/pullA11 - 81.50m⌀52 1985 ●
Sigma MF 70-210mm F/4.5 Multi-Coated II • Push/pull
akaQuantaray 70-210mm F/4.5 Multi-Coated		A12 - 91.00m⌀52 1983 ●
Sigma MF 70-210mm F/3.5-4.5 APO Multi-Coated • Push/pullA12 - 91.50m⌀52 1986 ●
Sigma MF 70-210mm F/4-5.6 Multi-Coated • Push/pullA12 - 91.50m⌀52 1987 ●
Sigma MF 75-200mm F/3.8 Multi-Coated • Push/pullA12 - 91.20m⌀55 1987 ●
Sigma MF High Power Zoom 70-230mm F/4.5 Multi-Coated • Push/pullA13 - 102.00m⌀62 ●
Soligor C/D Auto Zoom 70-222mm F/3.5 MC Macro (s/n 3xxxxxx) • Push/pullA13 - 91.80m⌀67 ●
Soligor C/D 70-210mm F/3.5 MC Macro (s/n 3xxxxxxx)A14 - 92.00m⌀62 ●
Soligor C/D 70-210mm F/3.5 [MC] (s/n 1xxxxxxx)A12 - 91.50m⌀67 ●
Soligor C/D 70-220mm F/3.5 [MC] (s/n 1xxxxxxx) • Push/pull
akaSpiratone Auto 70-220mm F/3.5 Pluracoat Macro		A15 - 121.50m⌀72 ●
Soligor Auto Zoom 75-205mm F/3.5 Macro (s/n 9xxxxxx)A? - ?2.00m⌀62 ●
Soligor C/D 78-210mm F/3.5 (s/n 4xxxxxx) • Push/pullA? - ?2.00m⌀62 ●
Tokina 70-210mm F/3.5 RMC • Push/pullA14 - 101.40m⌀62 1980 ●
Tokina SD 70-210mm F/4-5.6 • Push/pullA12 - 81.30m⌀52 1985 ●
Tokina 70-210mm F/4.5-5.6 • Push/pullA12 - 81.10m⌀49 ●
Tokina 70-220mm F/3.5 RMC Macro • Push/pullA16 - 121.50m⌀72 ●
Tokina 70-210mm F/3.5 RMCA12 - 91.50m⌀67 ●
Tokina SZ-X 70-210mm F/4-5.6 • Push/pullA12 - 81.30m⌀52 ●
Vivitar Series 1 Auto 70-210mm F/3.5 [VMC] Macro [I] (s/n 22xxxxxx) • Push/pullA15 - 102.00m⌀67 1973 ●
Vivitar Series 1 70-210mm F/2.8-4 Q-Dos VMC Macro [III] (s/n 09xxxxxx) • Push/pullA14 - 111.10m⌀58 1991 ●
Vivitar Series 1 70-210mm F/2.8-4 VMC Macro [I] (s/n 28xxxxxx) • Push/pullA14 - 100.80m⌀62 1984 ●
Vivitar Series 1 70-210mm F/3.5 VMC Macro [II] (s/n 37xxxxxx) • Push/pullA14 - 101.20m⌀62 1978 ●
Vivitar Series 1 70-210mm F/2.8-4 VMC Macro [II] (s/n 09xxxxxx) • Push/pullA14 - 111.10m⌀58 1987 ●
Vivitar 75-205mm F/3.8 MC Macro (s/n 22xxxxxx) • Push/pullA12 - 81.20m⌀62 1979 ●
Vivitar 75-205mm F/3.5-4.5 MC Macro (s/n 37xxxxxx) • Push/pullA13 - 91.00m⌀55 1982 ●
Vivitar 70-210mm F/4.5 MC Macro (s/n 77xxxxxx) • Push/pullA12 - 91.60m⌀52 1982 ●
Vivitar 70-210mm F/4.5-5.6 MC Macro [I] (s/n 09xxxxxx) • Push/pullA12 - 81.50m⌀52 1986 ●
Vivitar 75-200mm F/4.5 MC Macro (s/n 42xxxxxx) • Push/pullA12 - 91.50m⌀55 1986 ●
Vivitar Auto 75-205mm F/3.8 Close Focusing (s/n 22xxxxxx)A15 - 102.00m⌀58 1976 ●
Vivitar 70-210mm F/4.5-5.6 MC Macro (s/n 61xxxxxxx) • Push/pullA12 - 81.30m⌀52 ●
Vivitar 70-210mm F/4.5-5.6 MC Macro [II] (s/n 9xxxxxxx) • Push/pullA10 - 71.30m⌀52 ●
Leonar Auto 70-210mm F/3.8 MC Macro • Push/pullA12 - ?1.50m⌀58 ●
■Interchangeable mount (8)
Polaris Auto 70-230mm F/4.5 [YS]A13 - 82.50m⌀67 ●
Tamron SP 70-210mm F/3.5-4 MC CF Tele Macro 52A [Adaptall-2]A16 - 150.75m⌀58 1979 ●
Tamron SP 70-210mm F/3.5 MC CF Macro 19AH [Adaptall-2] • Push/pullA15 - 110.85m⌀62 1984 ●
Tamron 70-210mm F/3.8-4 46A [Adaptall-2] • Push/pullA12 - 90.90m⌀58 1986 ●
Tamron 70-210mm F/4-5.6 58A [Adaptall-2] • Push/pullA13 - 91.10m⌀52 1988 ●
Tamron 70-210mm F/4-5.6 158A [Adaptall-2] • Push/pullA13 - 91.10m⌀52 1991 ●
Tamron Auto 70-220mm F/3.8 Z-220 [Adaptall]A14 - 112.50m⌀62 1973 ●
Tamron Auto 70-220mm F/4 [Adapt-A-Matic]A14 - 112.00m⌀67 1969 ●

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