Sigma announces new 56mm f/1.4 DC DN lens for Sony E mount and mFT


Jul 31, 2018

... not for EF-M mount. (n)

But at least some "living proof" that an [presumably] "optically decent" APS-C 56mm/1.4 lens would easily be possible within typical EF-M size parameters (61.6mm outer diameter, max. 58mm filter thread).

Lens construction 10 elements in 6 groups
Number of diaphragm blades 9 (Rounded diaphragm)
Minimum focusing distance 50cm / 19.7in.
Maximum magnification ratio 1:7.4
Filter size ø55mm
Dimensions (diameter x length) ø66.5mm x 59.5mm / ø2.6in. x 2.3in.
Weight 280g/ 9.9oz.
Price/Availability: TBD

blue=SLD, red=aspherical

Diffraction MTF

Geometrical MTF

Canon, where art thou?