© Robert I. Sadler, 2011
Description, Notes & Specifications
| Manufactured: | 1966—1971 |
|---|---|
| Camera Mount: | M42x1 |
| Lens Elements / Groups: | 4 / 3 |
| Diaphragm Type: | automatic / manual |
| Diaphragm Blades: | 5 / pentagonal |
| Angle of View: | 46° |
| Maximum Aperture: | f/4 |
| Minimum Aperture: | f/22 |
| Minimum Focus Distance: | 0·234 metres |
| Magnification Factor: | 1:2 |
| Filter Size: | ø 49 mm (screw) |
| Length: | 54 mm / 78 mm |
| Largest Diameter: | 58 mm |
| Weight: | ≈245 grams |
| Product Numbers: | 391 / 43910 43911 |
| Serial Number Range: | — |
| My Serial Number(s): | 3918241 |
The new Super-Macro-Takumar 50mm f/4 lens is equipped with a fully automatic diaphragm to further increase its high performance. The magnification range is from 1/2 to infinity, but by applying the Auto Extension Tubes, you can shoot from life size to infinity. The automatic diaphragm enables you to shoot such difficult subjects as moving insects, while holding your camera and looking through the viewfinder.1
Distance engravings in yellow (metres) and blue (feet); red IR marker; special engravings (in white) for image ratio.
Mark IA: Product numbers 391 and 43910.
Mark IB: Product number 43911.
Review
Recommended: Yes
Sample Photographs
Canon EOS 30D – ISO 400, f/4 & 1/125 sec.
© Robert I. Sadler, 2010
References
- Asahi Pentax: Lenses & Accessories [06106]
- van Oosten, G. 1999. The Ultimate Asahi Pentax Screw Mount Guide. Uitgeverij Jansz.