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4747
MAIN SPECIFICATIONS
* For use with any PENTAX digital SLR camera.
* AL = Uses an aspheric lens, ED = Lens made with extra-low dispersion glass, IF = Inner
focus-type lens, SDM = Lens with a supersonic motor
Lens DA 14mm f/2.8ED [IF]
DA 15mm f/4ED AL Limited
DA 21mm f/3.2 AL Limited
Focal length
14mm (equivalent to approx.
21.5mm in 35mm format)
15mm (equivalent to approx.
23mm in 35mm format)
21mm (equivalent to approx.
32mm in 35mm format)
Elements in groups
12-11 8-6 8-5
Angle of view 90° 86° 68°
Aperture f/2.8 f/4 f/3.2
Minimum aperture
f/22 f/22 f/22
Mount type KAF-mount KAF-mount KAF-mount
Minimum focus
distance
0.17m (0.56ft) 0.18m (0.59ft) 0.2m (0.66ft)
Maximum
magnification
Approx. 0.19× Approx. 0.15× Approx. 0.17×
Filter size 77mm 49mm 49mm or 43mm
Lens hood PH-RBH 77mm Built-in MH-RBA 43mm
Max. diameter
× length
83.5mm × 69mm
(3.3in × 2.7in)
63mm × 39.5mm
(2.5in × 1.6in)
63mm × 25mm
(2.5in × 1.0in)
Weight
Approx. 420g/14.8oz
(with hood approx. 455g/
16.0oz)
Approx. 190g/6.7oz
Approx. 140g/4.9oz
(with hood approx. 155g/
5.5oz)
Soft case S100-120 Soft case DA70 Dedicated case
e_da21_20.fm Page 47 Thursday, April 23, 2009 5:34 PM