K 2000/13.5 Reflex
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.
|Exact Name||smc PENTAX REFLEX 1:13.5 2000mm|
|Year of Introduction||1979|
|Sold with Hood||built-in hood|
|Sold with Case||dedicated trunk: no name|
|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|
|Rear-Filter Diameter||52 mm|
|Maximum Diameter||180 mm|
|Special Features||tripod collar|
|Cap||hard leather slip-on cap, 181 mm|
|Fitting Hood(s)||built-in hood|
|Fitting Case(s)||dedicated trunk: no name|
Since I am not aware of any tests of this lens, I cannot make any comments about its optical performance.