Compare lenses

Pentax HD DA 70mm f/2.4 Limited vs Pentax smc D FA Macro 100mm f/2.8 WR

The Pentax HD DA 70mm f/2.4 Limited and the Pentax smc D FA Macro 100mm f/2.8 WR side by side, computed from this guide's catalogue.

Which to pick

Pick the Pentax HD DA 70mm f/2.4 Limited if you want a brighter f/2.4 (0.4 stops more light), for dim light and softer backgrounds and a design for APS-C, which usually means smaller and lighter. Pick the Pentax smc D FA Macro 100mm f/2.8 WR if you want coverage of full frame, so it suits the larger-sensor bodies too.

Still torn? Ask the guide about the Pentax HD DA 70mm f/2.4 Limited and the Pentax smc D FA Macro 100mm f/2.8 WR

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 70mm f/2.4 Limited	Pentax smc D FA Macro 100mm f/2.8 WR
Maker	Pentax	Pentax
Focal length	70mm (prime)	100mm (macro)
Full-frame equivalent	105mm on APS-C	100mm
Maximum aperture	f/2.4brighter	f/2.8
Made for	APS-C	Full frame
Mounts	Pentax K	Pentax K
Stabilised	no	no
Autofocus	yes	yes
Weight	131 g	not listed
Cameras it fits	20 in this guide	20 in this guide

Focal range, in full-frame terms

Pentax HD DA 70mm f/2.4 Limited: 70mm on APS-C, like 105mm.

Pentax smc D FA Macro 100mm f/2.8 WR: 100mm.

Aperture

Pentax HD DA 70mm f/2.4 Limited: f/2.4 wide open.

Pentax smc D FA Macro 100mm f/2.8 WR: f/2.8 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.