DA 16-45/4 AL ED
General Description
This is the first Pentax lens specifially designed for the smaller image circle of the Pentax digital SLRs. It features the new “Quick-Shift-Focus-System” which allows manual focus-corrections in AF mode.
| Product Information | |
|---|---|
| Exact Name | smc PENTAX-DA 1:4(22) 16-45mm ED -AL- |
| Color | black |
| Year of Introduction | 2003 |
| Catalog Number | 21507 |
| Sold with Hood | bayonet hood: PH-RBL67 |
| Sold with Case | — |
Technical Specifications
| Optics | |
|---|---|
| Optical Formula | 13 elements in 10 groups |
| Aperture Range | f/4 ~ f/22 |
| Number of Aperture Blades | 8 |
| Minimum Focusing Distance | 0.28 m |
| Maximum Magnification | 0.26 X |
| Special Features | aspherical element(s), extra-low dispersion element(s) |
| Mechanics | |
| Filter Diameter | 67 mm |
| Maximum Diameter | 72 mm |
| Length | 92 mm |
| Weight | 365 g |
| Accessories | |
| Cap | plastic clip-on cap, 67 mm |
| Fitting Hood(s) | bayonet hood: PH-RBL67 |
| Fitting Case(s) | soft case: S90-140 |
Subjective Evaluation
Informal user tests indicate that the lens is very sharp and contrasty, with flare and distortion also being very well controlled. There are, however, high levels of cromatic aperation at 16 mm, but they can be easily “cured” in the appropriate post-processing software.