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	0.28m (0.92ft)	0.3m (0.98ft)	0.28m (0.92ft)
	distance
	Maximum	Approx. 0.26×	Approx. 0.21×	Approx. 0.31×
	magnification	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

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Contents Smc PENTAX-DA Interchangeable Lens Foreword Using Your Lens Safely Precautions and Lens Maintenance CONTENTS3 Attaching the Lens Hood Precautions When Using the Lens with a Flash Features of the smc PENTAX-DA Lens Smc PENTAX-DA Lens KAF-mount KAF2-mount KAF3-mount About the DA lens mountSupersonic motor compatible camera body About lenses with a supersonic motorHow to Check and Update the Firmware To remove the lens Mounting and Removing the LensTo mount the lens on the camera body MemoLens CAP Attaching the dedicated lens cap to DA 40mm f/2.8 Limited Focusing Changing the Focus ModeFor the DA lens Focusing with the OK Button Using AutofocusDA 18-250mm f/3.5-6.3ED AL if Using the Quick-Shift Focus System Using Manual FocusUsing Autofocus How to use the Quick-Shift Focus SystemMemo DA 200mm f/2.8ED if SDM, DA 300mm f/4ED if SDM focusing Close-distance scale Zoom Lens About the zoom ring Red line About the zoom lock switchMagnification Scale Macro LensScrew-on Type DA 70mm f/2.4 Limited dedicated lens hood Attaching the Lens HoodLens hood attaching index Bayonet Type DA 21mm f/3.2 AL Limited dedicated lens hood About the PL filter window How to use the lens hood with polarizing filter window Built-in lens hood Filters Precaution on filtersPage Memo Circular polarizing filters and vignetting Compatibility table for Pentax circular polarizing filters SDM YES Memo ZDA 21mm f/3.2 AL Limited Built-in FlashExternal Flash ZDA 14mm f/2.8ED ifZDA 16-50mm f/2.8ED AL if SDM zDA 16-45mm f/4ED AL ZDA 12-24mm f/4ED AL ifCompatibility of DA Lenses with the Built-in Flash Compatibility Lens DA 50-200mm f/4-5.6ED Camera position shift lock screw Tripod Mount Tripod MountRemoving the Tripod Mount Main Specifications Lens DA 40mm f/2.8 Limited DA 70mm f/2.4 Limited 300mm equivalent to Lens DA 16-45mm f/4ED AL DA18-55mm f/3.5-5.6 AL DA 50-135mm f/2.8ED if SDM Statement of FCC Compliance Memo CE Mark is a Directive conformity mark of the European Union