Compare lenses

Leica APO-Summicron-SL 28mm f/2 ASPH vs Leica Elmarit-TL 18mm f/2.8 ASPH

The Leica APO-Summicron-SL 28mm f/2 ASPH and the Leica Elmarit-TL 18mm f/2.8 ASPH side by side, computed from this guide's catalogue.

Which to pick

Pick the Leica APO-Summicron-SL 28mm f/2 ASPH if you want a brighter f/2 (1.0 stops more light), for dim light and softer backgrounds and coverage of full frame, so it suits the larger-sensor bodies too. Pick the Leica Elmarit-TL 18mm f/2.8 ASPH if you want a design for APS-C, which usually means smaller and lighter and a lighter lens (80 g against 700 g).

Still torn? Ask the guide about the Leica APO-Summicron-SL 28mm f/2 ASPH and the Leica Elmarit-TL 18mm f/2.8 ASPH

Specs side by side

Rows that differ are in full colour; the better value is marked where one is better by any measure.
Spec	Leica APO-Summicron-SL 28mm f/2 ASPH	Leica Elmarit-TL 18mm f/2.8 ASPH
Maker	Leica	Leica
Focal length	28mm (prime)	18mm (prime)
Full-frame equivalent	28mm	27mm on APS-C
Maximum aperture	f/2brighter	f/2.8
Made for	Full frame	APS-C
Mounts	L-Mount	L-Mount
Stabilised	no	no
Autofocus	yes	yes
Weight	700 g	80 glighter
Cameras it fits	25 in this guide	25 in this guide

Focal range, in full-frame terms

Leica APO-Summicron-SL 28mm f/2 ASPH: 28mm.

Leica Elmarit-TL 18mm f/2.8 ASPH: 18mm on APS-C, like 27mm.

Aperture

Leica APO-Summicron-SL 28mm f/2 ASPH: f/2 wide open.

Leica Elmarit-TL 18mm f/2.8 ASPH: 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

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