Compare lenses

Pentax HD DA* 16-50mm f/2.8 ED PLM AW vs Pentax smc DA 16-45mm f/4 ED AL

The Pentax HD DA* 16-50mm f/2.8 ED PLM AW and the Pentax smc DA 16-45mm f/4 ED AL side by side, computed from this guide's catalogue.

Which to pick

Pick the Pentax HD DA* 16-50mm f/2.8 ED PLM AW if you want a brighter f/2.8 (1.0 stops more light), for dim light and softer backgrounds. Pick the Pentax smc DA 16-45mm f/4 ED AL if you want a lighter lens (356 g against 712 g).

Still torn? Ask the guide about the Pentax HD DA* 16-50mm f/2.8 ED PLM AW and the Pentax smc DA 16-45mm f/4 ED AL

Specs side by side

Rows that differ are in full colour; the better value is marked where one is better by any measure.
Spec	Pentax HD DA* 16-50mm f/2.8 ED PLM AW	Pentax smc DA 16-45mm f/4 ED AL
Maker	Pentax	Pentax
Focal length	16-50mm (zoom)	16-45mm (zoom)
Full-frame equivalent	24-75mm on APS-C	24-68mm on APS-C
Maximum aperture	f/2.8brighter	f/4
Made for	APS-C	APS-C
Mounts	Pentax K	Pentax K
Stabilised	no	no
Autofocus	yes	yes
Zoom range	3.1×more range	2.8×
Weight	712 g	356 glighter
Cameras it fits	20 in this guide	20 in this guide

Focal range, in full-frame terms

Pentax HD DA* 16-50mm f/2.8 ED PLM AW: 16-50mm on APS-C, like 24-75mm.

Pentax smc DA 16-45mm f/4 ED AL: 16-45mm on APS-C, like 24-68mm.

Aperture

Pentax HD DA* 16-50mm f/2.8 ED PLM AW: f/2.8 wide open.

Pentax smc DA 16-45mm f/4 ED AL: f/4 wide open.

Each opening drawn to scale against f/1.4: a smaller f-number lets in more light and blurs the background more.

Field of view

How wide each sees, at each end, on the sensor it was made for.

Cameras they fit

20 cameras in this guide take both, so either works on the same body.