A unique fisheye zoom lens in a very small package. It has low rectilinear distortion for a fisheye and Pentax's uniqe SMC coatings which increase light transmission for more effective lens speed. The use of attached filters is not possible with this lens due to its' special characteristics.
| Filter Size | None |
| f/Stop Range | 3.5-22 |
| Minimum Focus Distance | 1.5' |
| Magnification | Not specified by manufacturer |
| Zoom/Focus Control | Two-touch |
| Angle of View | 180 to 90 Degrees |
| Groups/Elements | 7/9 |
| Length | 2.4" |
| Maximum Diameter | 2.6" |
| Weight | 0.56 lb |