Pentax 21580, 21717, 21740, 21660, 21650, 21760, 21507 manual Lens DA 16-45mm f/4ED AL

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Lens	DA 16-45mm f/4ED AL	DA 16-50mm f/2.8ED AL [IF] SDM	DA 17-70mm f/4 AL [IF] SDM
	16-45mm (equivalent to	16-50mm (equivalent to	17-70mm (equivalent to
Focal length	approx. 24.5-69mm in	approx. 24.5-76.5mm in	approx. 26-107mm in
	35mm format)	35mm format)	35mm format)
Elements in groups	13-10	15-12	17-12
Angle of view	83°–35°	83°–31.5°	79°-23°
Aperture	f/4	f/2.8	f/4
Minimum aperture	f/22	f/22	f/22
Mount type	KAF-mount	KAF2-mount	KAF3-mount
Minimum focus	0.28m (0.92ft)	0.3m (0.98ft)	0.28m (0.92ft)
distance
Maximum	Approx. 0.26×	Approx. 0.21×	Approx. 0.31×
magnification
Filter size	67mm	77mm	67mm
Lens hood	PH-RBL 67mm	PH-RBJ 77mm	PH-RBM 67mm
Max. Diameter	72mm × 92mm	84mm × 98.5mm	75mm × 93.5mm
× Length	(2.8in × 3.6in)	(3.3in × 3.9in)	(3.0in × 3.7in)
	Approx. 365g/12.9oz	Approx. 565g/19.9oz	Approx. 485g/17.1oz
Weight	(with hood approx. 390g/	(with hood approx. 600g/	(with hood approx. 515g/
	13.8oz)	21.2oz)	18.2oz)
Soft case	S90-140	S100-140	S90-140