An integrated LED can be used to display select Sigma lens compatibility with the adapted camera body, and the adapter also has pre-loaded lens data to support peripheral illumination, chromatic aberration, and distortion corrective functions. In order to maintain the best image quality, the interior of the adapter is flocked to reduce reflections. The MC21 retains full EXIF data and a removable tripod mount is included.
The converter allows more freedom of choice for L-Mount cameras from SIGMA, Leica Camera and Panasonic, enhancing the extensibility of the L-Mount system.
Attaching the MC-21 to SIGMA’s CANON EF mount compatible lenses allows them to be used as L-Mount system lenses, promoting the effective use of valuable lenses on different mount systems.
At this time of writing, 29 interchangeable lenses are available to be used for L-Mount cameras with the MC-21. Compatible with the auto crop 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. The MC-21 cannot be used in combination with a teleconverter. Operations using other non-compatible lenses are not guaranteed.
Fast and accurate auto focus - High precision AF photography in AF-S mode (single shot mode) is available. However, the adapter is not compatible with AF-C mode.
Simple interface - Whether the mounted lens is compatible or not is instantly visible from the colour and the on/off of the MC-21's built-in LED. The LED also notifies the user when a lens firmware update is available.
Lens data is pre-loaded - Running the data pre-loaded in the MC-21 for each lens by the special control program, autofocus and aperture control have been optimised. Regarding lenses to be released in the future, data for operating these lenses via the MC-21 will be stored in the lens. It means no firmware updates of the MC-21 will be required to use those new lenses. In addition, the MC-21 also supports correction functions of the camera such as peripheral illumination, chromatic aberration of magnification, and distortion.
Comes with a tripod socket - Equipped with a socket for attaching the tripod. Lenses not equipped with a tripod socket can be used by mounting the tripod to the MC-21.
The inside surface of the barrel is covered with flocking to eliminate internal reflections. - To prevent a reduction in lens performance due to internal reflections, the inside surface of the barrel is covered with flocking.
Inclusion in Exif data - Information such as lens type, focal length, F number, and other tags are embedded as Exif data in each image file.
Compatible lenses - 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
Compatible lenses - APS-C
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