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10-17mm fisheye lens with f/3.5-4.5 maximum aperture for Pentax digital SLR camerasCreates images with expanded perspective, with creatively deformed outlook and sharp pan focus
Image circle is designed to perfectly match 23.5 x 15.7mm CCD used in Pentax digital SLRs
Water- and oil-repellant SP lens coatings; extra-low-dispersion glass for superior sharpness
Minimum focusing distance of 0.46 feet; measures 2.8 inches in diameter; weighs 11.3 ounces