The DA* 16–50mm lens is a family of professional wide-angle lenses made by Ricoh Imaging. The current version, the HD DA* 16-50mm f/2.8L ED PLM AW, replaced the older smc DA* 16-50mm f/2.8 ED IF SDM lens in 2021.

The Pentax smc DA* 16-50mm F2.8 ED AL (IF) SDM is an advanced standard zoom lens for Pentax K-mount APS-C DSLR bodies, announced by Pentax on February 21, 2007.

The Pentax smc DA* 16-50mm F2.8 ED AL (IF) SDM is a professional standard zoom lens for Pentax K-mount APS-C DSLR bodies. Development was announced on 25th May 2020,^[1] officially product name announced on October 25, 2021,^[2] launched on July 15, 2021^[3] and first shipped in August 2021.

Attribute	smc ED AL [IF] SDM	HD ED PLM AW
Image
Key features
Full-frame compatible	No
★-series	Yes
Macro	No
Manual focus override	Yes
Weather-sealing	Yes
Lens-based stabilization	No
Aperture ring	No
Technical data
Aperture (max-min)	f/2.8–f/32
Construction	15 groups / 12 elements	16 groups / 10 elements
# of diaphragm blades	9	9 (rounded)
Closest focusing distance	0.3 m (0.98 ft)
Max. magnification	0.21× (1:4.8)	0.24× (1:4.2)
Horizontal viewing angle	74°-27°
Diagonal viewing angle	83°-31.5°
Vertical viewing angle	52°-18°
Physical data
Weight	565 g (1.246 lb)	712 g (1.570 lb)
Maximum diameter	84 mm (3.3 in)	84 mm (3.3 in)
Length	98.5 mm (3.88 in)	117 mm (4.6 in)
Filter diameter	77 mm	77 mm
Accessories
Lens hood	PH-RBJ77	PH-RBM77
Retail information
Release date	March 2007	July 2021
MSRP $	$749	$1,399
Street price $	$749	$1,399

• Specifications, KMP
• Specifications, Imaging Ressource
• Review / Test Report, OpticalLimits!
• HD PENTAX-DA★ 16-50mm F2.8ED PLM AW: A large-aperture standard zoom lens for APS-C, Ricoh Imaging Blog
• Product Page, Ricoh Imaging Europe
• Special Content Site, Ricoh Imaging Global

Media related to SMC Pentax-DA* 16-50mm F2.8 ED AL (IF) SDM at Wikimedia Commons

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