Size and Weight Comparison
Weight of a lens is as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods.
Both Sigma 45mm F2.8 DG DN C has the Leica L lens mount whereas the has the lens mount. Some of the latest released cameras that are compatible with these mounts are Panasonic S5 II, Panasonic S5 II X and Sigma fp L for the Leica L Mount and , and for the Mount.
Sigma 45mm F2.8 DG DN C is also available in Sony E mount.
Sigma 45mm F2.8 DG DN C is a prime lens with fixed focal lenght of 45mm.