Pentax DA 50mm lens

SMC Pentax-DA 50mm f/1.8

Maker	Pentax
Technical data
Type	Prime
Focal length	50mm
Focal length (35mm equiv.)	75mm
Crop factor	1.0
Aperture (max/min)	f/1.8 / f/22
Close focus distance	0.45 metres (1.5 ft)
Max. magnification	0.15x
Diaphragm blades	7, rounded
Construction	6 elements in 5 groups
Features
Application	Normal prime
Physical
Max. length	38.5 millimetres (1.52 in)
Diameter	63.0 millimetres (2.48 in)
Weight	122 grams (4.3 oz)
Filter diameter	52mm
Accessories
Lens hood	RH-RA 52mm
Case	S70-70
Angle of view
Diagonal	46° (full frame) 31.5° (APS-C)
History
Introduction	2012
Retail info
MSRP	$249.95 USD

The SMC Pentax-DA 50mm f/1.8 lens is a normal prime lens for the Pentax K-mount. The 75mm equivalent focal length on APS-C cameras and fast f/1.8 aperture make it well suited for portrait photography. It uses a simple double-Gauss design of 6 elements in 5 groups.

Similar lenses from other manufacturers include the Canon EF 50mm f/1.8 II and Nikon AF Nikkor 50 mm f/1.8D.

External links

• Media related to SMC Pentax-DA 50mm F1.8 at Wikimedia Commons
• Ricoh Imaging: SMC Pentax-DA 50mm f/1.8