Compare lenses

Pentax smc DA 12-24mm f/4 ED AL [IF] vs Tamron SP AF 10-24mm f/3.5-4.5 Di II LD Aspherical (IF)

The Pentax smc DA 12-24mm f/4 ED AL [IF] and the Tamron SP AF 10-24mm f/3.5-4.5 Di II LD Aspherical (IF) side by side, computed from this guide's catalogue.

Which to pick

Pick the Tamron SP AF 10-24mm f/3.5-4.5 Di II LD Aspherical (IF) if you want a brighter f/3.5 (0.4 stops more light), for dim light and softer backgrounds; a wider view (from 15mm equivalent); and a fit on more cameras (51 against 20 in this guide). On these specs the Pentax smc DA 12-24mm f/4 ED AL [IF] has no clear advantage: choose it if the price, the handling or a lens you own decides it.

Still torn? Ask the guide about the Pentax smc DA 12-24mm f/4 ED AL [IF] and the Tamron SP AF 10-24mm f/3.5-4.5 Di II LD Aspherical (IF)

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 smc DA 12-24mm f/4 ED AL [IF]	Tamron SP AF 10-24mm f/3.5-4.5 Di II LD Aspherical (IF)
Maker	Pentax	Tamron
Focal length	12-24mm (zoom)	10-24mm (zoom)
Full-frame equivalent	18-36mm on APS-C	15-36mm on APS-C
Maximum aperture	f/4	f/3.5-4.5brighter
Made for	APS-C	APS-C
Mounts	Pentax K	Canon EF, Nikon F, Pentax K
Stabilised	no	no
Autofocus	yes	yes
Zoom range	2.0×	2.4×more range
Weight	430 g	not listed
Cameras it fits	20 in this guide	51 in this guidefits more cameras

Focal range, in full-frame terms

Pentax smc DA 12-24mm f/4 ED AL [IF]: 12-24mm on APS-C, like 18-36mm.

Tamron SP AF 10-24mm f/3.5-4.5 Di II LD Aspherical (IF): 10-24mm on APS-C, like 15-36mm.

Aperture

Pentax smc DA 12-24mm f/4 ED AL [IF]: f/4 wide open.

Tamron SP AF 10-24mm f/3.5-4.5 Di II LD Aspherical (IF): f/3.5 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. In all, the Pentax smc DA 12-24mm f/4 ED AL [IF] fits 20 and the Tamron SP AF 10-24mm f/3.5-4.5 Di II LD Aspherical (IF) 51.