(information below taken directly from
Pentax's website)
- Metal PENTAX KAF Lens Mount
- Equivalent focal length to 15mm-26mm in the 35mm format
with *ist DSLRs
- New water and oil repellant SP (Super Protective) lens
coating for easy cleaning
- Extra-low Dispersion (ED) glass for superior sharpness and
color correction
- Responsive “Quick-Shift Focus System” allows instant shift
from AF to MF
- The image circle is designed to match the CCD used in
PENTAX digital SLRs
