© Robert I. Sadler, 2011
© Robert I. Sadler, 2011
Description, Notes & Specifications
| Manufactured: | 1966—1971 |
|---|---|
| Camera Mount: | M42x1 |
| Lens Elements / Groups: | 7 / 7 |
| Diaphragm Type: | automatic / manual |
| Diaphragm Blades: | 5 / pentagonal |
| Angle of View: | 75° |
| Maximum Aperture: | f/3·5 |
| Minimum Aperture: | f/16 |
| Minimum Focus Distance: | 0·40 metres |
| Magnification Factor: | — |
| Filter Size: | ø 49 mm (screw) |
| Length: | 41 mm / 44 mm |
| Largest Diameter: | 57 mm |
| Weight: | ≈210 grams |
| Product Number: | 43871 |
| Serial Number Range: | — |
| My Serial Number: | 2942403 |
Super-Takumar 28mm f/3·5 — A new super-wide-angle lens of 7 elements, designed and produced to meet the most exacting of the professional requirements, this is the lens you professionals and advanced amateurs need to shoot more artisting photographs. Equiped with fully automatic diaphragm; ideal for architecture, fast-action and artistic photography.1
Super-Takumar 28mm f/3·5 — This is the smallest wide-angle lens available for single lens reflex cameras, and its compactness combines perfectly with the lightweight Pentax to give the ideal general-purpose wide-angle photography system. A special thick meniscus-type lens is used for the third element, resulting in a lightweight optic weighing a mere 207 grams and only 41.6mm in length. Its fine response makes it an ideal lens for color photography. The wide 75° viewing angle and snap marks from 1.5m to infinity are eminently suited to candid shots under all circumstances. The standard 49mm filter size is an added convenience.
Distance engravings in yellow (metres) and blue (feet); snapshot indication with red letterings at f/8 and 3 metres / 10 feet.
The same optical design was used for the Super-Multi-Coated TAKUMAR 1:3.5/28 lens.
The last samples were supplied with the new multi-coating, but lacked the full aperture metering mechanism.
Depth of Field Guide
| f/3·5 | f/4 | f/5·6 | f/6·7 | f/8 | f/9·5 | f/11 | f/16 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0·40 | 0·38 | 0·42 | 0·38 | 0·43 | 0·37 | 0·44 | 0·36 | 0·45 | 0·36 | 0·46 | 0·35 | 0·47 | 0·34 | 0·48 | 0·32 | 0·53 |
| 0·45 | 0·42 | 0·48 | 0·42 | 0·48 | 0·41 | 0·50 | 0·40 | 0·51 | 0·40 | 0·52 | 0·39 | 0·54 | 0·38 | 0·56 | 0·35 | 0·62 |
| 0·50 | 0·47 | 0·54 | 0·46 | 0·54 | 0·45 | 0·56 | 0·44 | 0·57 | 0·43 | 0·59 | 0·42 | 0·61 | 0·41 | 0·63 | 0·38 | 0·72 |
| 0·60 | 0·55 | 0·65 | 0·55 | 0·66 | 0·53 | 0·69 | 0·52 | 0·71 | 0·51 | 0·74 | 0·49 | 0·77 | 0·48 | 0·81 | 0·44 | 0·96 |
| 0·80 | 0·72 | 0·90 | 0·71 | 0·92 | 0·68 | 0·97 | 0·66 | 1·01 | 0·64 | 1·07 | 0·62 | 1·14 | 0·59 | 1·22 | 0·53 | 1·61 |
| 1·00 | 0·88 | 1·16 | 0·86 | 1·19 | 0·82 | 1·29 | 0·79 | 1·36 | 0·76 | 1·46 | 0·73 | 1·60 | 0·70 | 1·77 | 0·61 | 2·74 |
| 1·20 | 1·03 | 1·44 | 1·01 | 1·48 | 0·95 | 1·64 | 0·91 | 1·77 | 0·87 | 1·94 | 0·83 | 2·20 | 0·79 | 2·53 | 0·68 | 5·11 |
| 1·50 | 1·24 | 1·90 | 1·21 | 1·97 | 1·12 | 2·26 | 1·07 | 2·51 | 1·01 | 2·89 | 0·95 | 3·49 | 0·90 | 4·42 | 0·76 | ∞ |
| 2·00 | 1·56 | 2·78 | 1·51 | 2·95 | 1·38 | 3·64 | 1·30 | 4·34 | 1·22 | 5·62 | 1·13 | 8·50 | 1·06 | 17·45 | 0·87 | ∞ |
| 3·00 | 2·11 | 5·21 | 2·02 | 5·83 | 1·79 | 9·35 | 1·65 | 16·02 | 1·52 | ∞ | 1·39 | ∞ | 1·29 | ∞ | 1·02 | ∞ |
| 7·00 | 3·51 | ∞ | 3·27 | ∞ | 2·70 | ∞ | 2·41 | ∞ | 2·14 | ∞ | 1·89 | ∞ | 1·69 | ∞ | 1·26 | ∞ |
| ∞ | 6·22 | ∞ | 5·52 | ∞ | 4·06 | ∞ | 3·43 | ∞ | 2·91 | ∞ | 2·47 | ∞ | 2·14 | ∞ | 1·49 | ∞ |
(Distances in metres; Circle of Confusion is taken at 0·032 millimetres.)
Review
Recommended: Yes
References
- Asahi Pentax: Lenses & Accessories. [06106]
- van Oosten, G. 1999. The Ultimate Asahi Pentax Screw Mount Guide. Uitgeverij Jansz.