Lens system
| Closest focusing distance |
0.4 m |
| Lens mount interface |
Pentax KAF3 |
| Minimum focal length (35mm film equiv) |
27.5 mm |
| Maximum focal length (35mm film equiv) |
207 mm |
| Number of diaphragm blades |
7 |
| Diagonal angle of view (min) |
11.9 ° |
| Diagonal angle of view (max) |
76 ° |
| Aperture range (F-F) |
3.5 - 5.6 |
| Minimum aperture number |
3.5 |
| Maximum aperture number |
38 |
| Focal length (35mm film equivalent) |
27.5 - 207 mm |
| Focal length range (f-f) |
18 - 135 mm |
Weight & dimensions
| Diameter |
76 mm |
| Filter size |
62 mm |
smc DA 18-135mm f/3.5-5.6 ED AL [IF] DC WR
Thanks to advanced PENTAX optics design technology, this lens has been designed to be compact and lightweight despite its high zoom ratio, making it a versatile, maneuverable everyday-use lens.
A simplified weather-resistant construction and an extra-smooth autofocus operation using a built-in motor, in addition to its high 7.5-times zoom ratio, allow the DA 18-135mm WR to accommodate a wide range of subjects and scenes that photographers come across in their shooting sessions — from scenic images and snapshots to portraits and sports photos.