Nikon AI Nikkor 18mm F/4
Ultra-wide angle prime lens • Film era • Discontinued
- Announced:
- · June 1977
- Production status:
- ● Discontinued
- Country of design:
- · Japan
- Original name:
- · Nikon NIKKOR 18mm 1:4
- Class:
- · Slow full-frame ultra-wide angle prime lens
- · Professional model
- System:
- · Nikon F (1959)
Abbreviations
| AI | A manual focus lens with automatic maximum aperture indexing, which is a mechanical system for coupling the lens to the camera's exposure system. Learn more |
Model history (3)
| ■Nikon Nikkor 18mm F/4 | A | 13 - 9 | 0.30m | ⌀86 | 1974 ● | |
| ■Nikon AI Nikkor 18mm F/4 | A | 13 - 9 | 0.30m | ⌀86 | 1977 ● | |
| ■Nikon AI-S Nikkor 18mm F/3.5 | A | 11 - 10 | 0.25m | ⌀72 | 1981 ● | |
Specification
| Optical design: | |
| 35mm full frame | |
| 18mm | |
| F/4 | |
| 13 elements in 9 groups | |
| Nikon F [46.5mm] | |
| 100.5° (35mm full frame) | |
| On Nikon D APS-C [1.53x] cameras: | |
35mm equivalent focal length: | 27.5mm (in terms of field of view) |
35mm equivalent speed: | F/6.1 (in terms of depth of field) |
Diagonal angle of view: | 76.3° |
| Diaphragm mechanism: | |
Diaphragm type: | Automatic |
Aperture control: | Aperture ring (Manual settings only) |
| 7 (seven) | |
| Focusing: | |
| 0.30m | |
| <No data> | |
Focusing modes: | Manual focus only |
Manual focus control: | Focusing ring |
| Physical characteristics: | |
| 325g | |
| ⌀89×46.5mm | |
| Accessories: | |
| Screw-type 86mm | |
| HN-15 - Screw-type round | |
| Not compatible |
Sources of data
- Manufacturer's technical data.
- Nikon Sales Manual (July 1977).
- Nikkor lenses sales manual (January 1979).
- Nikon Sales Manual (June 1978).
Manufacturer description
Covers a panoramic 100° area with edge-to-edge sharpness. Weighing just 325g (11 .5 oz.) its compact construction makes it a welcome addition to any Nikon or Nikkormat system. The relatively high speed simplifies focusing and composing even in dim lighting. An innovative 13-element optical system provides remarkably even illumination right to the edges, even at maximum aperture.
The extremely wide field coverage, depth-of-field, and freedom from distortion typical of this lens render it an excellent choice for architectural and scenic photography as well as picture taking in cramped quarters. An accessory lens hood (supplied with the lens) is computed specifically for this lens, and is recommended for optimal performance; the hood also serves as a retaining ring for Series 9 filters.
Notes
- This AI lens was designed for Nikon F3, EL2, EM, FE, FE2, FE10, FG-20, FM, FM2, FM10, FM3A, Nikkormat FT3 AI cameras and Nikon FA, FG, N2000, N6000 AI-S cameras.
- AI and AI-S lenses are backward compatible with Nikon F, F2, Nikkormat FS, FT, FT2, FTN, EL, ELW cameras.
- On Nikon digital SLR cameras, the automatic exposure metering with AI and AI-S lenses will not be available on D40, D40X, D60, D70, D70s, D80, D3000-D3500, D5000-D5600 series.
Other ultra-wide angle prime lenses in the Nikon F system
| ■Nikon F mount (17) | |||||||||
| Nikon Nikkor 13mm F/5.6 | A | 16 - 12 | 0.30m | -- | 1975 ● | ||||
| Nikon AI Nikkor 13mm F/5.6 | A | 16 - 12 | 0.30m | -- | 1977 ● | ||||
| Nikon AI-S Nikkor 13mm F/5.6 | A | 16 - 12 | 0.30m | -- | 1982 ● | ||||
| Nippon Kogaku / Nikon Nikkor-QD[·C] Auto 15mm F/5.6 | A | 14 - 12 | 0.30m | -- | 1970 ● | ||||
| Nikon Nikkor 15mm F/5.6 | A | 14 - 12 | 0.30m | -- | 1976 ● | ||||
| Nikon AI Nikkor 15mm F/5.6 | A | 14 - 12 | 0.30m | -- | 1977 ● | ||||
| Nikon AI Nikkor 15mm F/3.5 | A | 14 - 11 | 0.30m | -- | 1978 ● | ||||
| Nikon AI-S Nikkor 15mm F/3.5 | A | 14 - 11 | 0.30m | -- | 1981 ● | ||||
| Nikon Nikkor 18mm F/4 | A | 13 - 9 | 0.30m | ⌀86 | 1974 ● | ||||
| Nikon AI-S Nikkor 18mm F/3.5 | A | 11 - 10 | 0.25m | ⌀72 | 1981 ● | ||||
| Nikon Nikkor 20mm F/4 | A | 10 - 8 | 0.30m | ⌀52 | 1974 ● | ||||
| Nikon AI Nikkor 20mm F/4 | A | 10 - 8 | 0.30m | ⌀52 | 1977 ● | ||||
| Nippon Kogaku / Nikon Nikkor-UD Auto 20mm F/3.5 | A | 11 - 9 | 0.30m | ⌀72 | 1967 ● | ||||
| Nikon AI Nikkor 20mm F/3.5 | A | 11 - 8 | 0.30m | ⌀52 | 1977 ● | ||||
| Nikon AI-S Nikkor 20mm F/3.5 | A | 11 - 8 | 0.30m | ⌀52 | 1981 ● | ||||
| Nikon AI-S Nikkor 20mm F/2.8 | A | 12 - 9 | 0.25m | ⌀62 | 1984 ● | ||||
| Nippon Kogaku Nikkor-O 21mm F/4 • Pancake lens | M | 8 - 4 | 0.90m | ⌀52 | 1959 ● | ||||