L-mount lenses and an adapter

The first step towards the all-new L-mount equipped Foveon camera is here. Sigma Corporation announced the launch of the Art line prime lens lineup for full-frame cameras in L-Mount. A grand total of 11 Primes will be available in L-mount versions. Availability and prices will be announced at a later date.

Additionally, Sigma announced the L-Mount Converter MC-21. This converter allows Sigma SA mount and Sigma’s CANON EF mount interchangeable lenses to use their lenses on L-Mount camera bodies from Sigma, Leica Camera and Panasonic, enhancing the extensibility of the L-Mount system.

L-mount prime lenses

Sigma touts the following features for its L-mount line-up:

Optimized AF for L-Mount
With the AF drive control program and high-speed communication tuned for each lens, shooting at speed with high-precision AF control is achieved. The lenses also support the AF-C mode.

Compatible with in-camera image stabilization
Compatible with in-camera image stabilization, the camera automatically detects the focal length of each lens and optimizes image stabilization performance.

Data pre-loaded for compatibility with in-camera aberration correction
Fully compatible with in-camera aberration correction (corrections for peripheral illumination, chromatic aberrations, and distortion). By matching corrections to the optical characteristics of the lens, this function takes image quality to an even higher level.

Native mount for a more rigid and stable feel
Making the lens mount native provides a much more rigid and stable feel to the lens than using an adapter. Featuring a surface treatment to enhance strength, the brass bayonet mount offers a high-precision fit and exceptional durability. The mount connection area incorporates rubber sealing for dust- and splash-proof construction.

The eleven primes:
SIGMA 14mm F1.8 DG HSM
SIGMA 20mm F1.4 DG HSM
SIGMA 24mm F1.4 DG HSM
SIGMA 28mm F1.4 DG HSM
SIGMA 35mm F1.4 DG HSM
SIGMA 40mm F1.4 DG HSM
SIGMA 50mm F1.4 DG HSM
SIGMA 85mm F1.4 DG HSM
SIGMA 105mm F1.4 DG HSM
SIGMA 135mm F1.8 DG HSM

The L-Mount Converter MC-21

Attaching the MC-21 to your collection of SIGMA SA mount and SIGMA’s CANON EF mount compatible lenses allows them to be used as L-Mount system lenses, promoting the effective use of valuable lenses already owned.

The MC-21 increases the number of interchangeable lenses manufactured by SIGMA that can be used with the L-Mount system by 29 lenses. Compatible with the autocrop function, mounting APS-C size image circle DC lenses to a camera body equipped with a 35mm full size sensor still allows immediate use for shooting.

High precision AF photography in AF-S mode is achieved. But, and this a surprise to me, not compatible with AF-C mode.

Whether the mounted lens is compatible or not is instantly visible from the MC-21’s built-in LED. The LED also notifies the user when a lens firmware update is available.

With data pre-loaded in the MC-21 for each lens by the special control program, autofocus and aperture control have been optimized. Lenses to be released in the future will have that data stored in the lens. It means no firmware updates of the MC-21 will be required to use those new lenses. The MC-21 also supports correction functions such as peripheral illumination, chromatic aberration of magnification, and distortion. Information such as lens type, focal length, F number, and other tags are embedded as Exif data in each image file.

Lenses not equipped with a tripod socket can be used by mounting the tripod to the MC-21.

The inside surface of the barrel full-size with flocking to eliminate internal reflections.

Lens compatibility

35mm full frame
12-24mm F4 DG HSM Art
14-24mm F2.8 DG HSM Art
24-35mm F2 DG HSM Art
24-70mm F2.8 DG OS HSM Art
24-105mm F4 DG OS HSM Art
60-600mm F4.5-6.3 DG OS HSM Sports
70-200mm F2.8 DG OS HSM Sports
100-400mm F5-6.3 DG OS HSM Contemporary
120-300mm F2.8 DG OS HSM Sports
150-600mm F5-6.3 DG OS HSM Sports
150-600mm F5-6.3 DG OS HSM Contemporary
14mm F1.8 DG HSM Art*
20mm F1.4 DG HSM Art*
24mm F1.4 DG HSM Art*
28mm F1.4 DG HSM Art*
35mm F1.4 DG HSM Art*
40mm F1.4 DG HSM Art*
50mm F1.4 DG HSM Art*
70mm F2.8 DG MACRO Art*
85mm F1.4 DG HSM Art*
105mm F1.4 DG HSM Art*
135mm F1.8 DG HSM Art*
500mm F4 DG OS HSM Sports
* The MC-21 is not necessary for native L-Mount lenses.

17-70mm F2.8-4 DC MACRO OS HSM Contemporary
18-35mm F1.8 DC HSM Art
18-200mm F3.5-6.3 DC MACRO OS HSM Contemporary
18-300mm F3.5-6.3 DC MACRO OS HSM Contemporary
50-100mm F1.8 DC HSM Art
30mm F1.4 DC HSM Art