K 2000/13.5 Reflex
General Description
As I am not familiar with any tests or descriptions by people who have actually used this lens, I need to do some "educated guesses." My imagine then that using this large and heavy lens is a real challenge: finding a suitable tripod for it, carrying the tripod and the lens around, focusing on distant subjects using such a narrow aperture, striving to eliminate vibrations and shooting super-fast film are all difficult things. But when they are all combined together, the challenge is even greater. On the other hand, this lens or its successor (the absolutely identical M 2000/13.5) have been in Pentax’s lineup since 1979.
The lens offers two rear filter holders, one for use with color filters and one for use with neutral-density filters.
| Product Information | |
|---|---|
| Exact Name | smc PENTAX REFLEX 1:13.5 2000mm |
| Color | black |
| Year of Introduction | 1979 |
| Catalog Number | 24980 |
| Sold with Hood | built-in hood |
| Sold with Case | dedicated trunk: no name |
Technical Specifications
| Optics | |
|---|---|
| Optical Formula | 6 elements in 4 groups |
| Aperture Range | f/13.5 ~ f/13.5 |
| Minimum Focusing Distance | 20.0 m |
| Maximum Magnification | 0.12 X |
| Special Features | reflex lens |
| Mechanics | |
| Front-Filter Thread | no |
| Rear-Filter Diameter | 52 mm |
| Maximum Diameter | 180 mm |
| Length | 530 mm |
| Weight | 8000 g |
| Special Features | tripod collar |
| Accessories | |
| Cap | hard leather slip-on cap, 181 mm |
| Fitting Hood(s) | built-in hood |
| Fitting Case(s) | dedicated trunk: no name |
Subjective Evaluation
Since I am not aware of any tests of this lens, I cannot make any comments about its optical performance.