Surprising update: Sigma 12mm f/1.4 APS-C E-mount lens launch delayed? Here is the full press text! | sonyalpharumors
A reliable source sent me a curious message: At the last minute, Sigma decided to delay the launch of the APS-C 12mm f/1.4 lens, which was supposed to be announced alongside the APS-C 17-40mm f/1.8 lens on June 17. Now, I'm not sure if he meant that all the different mount versions (E/X/L/RF)...

- Stepper motor
- Water and oil repellent coating
- Aperture ring (Canon RF mount version has a control ring instead of an aperture ring.)
- Dust and splash resistant construction
- Mount conversion service available
- Lens construction: 14 elements in 12 groups (2 SLD, 3 aspherical elements)
- Number of diaphragm blades: 9 (round diaphragm)
- Minimum focusing distance: 17.2 cm
- Maximum magnification ratio: 1:8.4
- Filter size: φ62 mm
- Maximum diameter x length: φ68.0 mm x 69.4 mm
- Weight: 225 grams
Gewicht und Abmessungen also nahezu identisch zum SEL15F14G.
Gegenüber dem Sigma 16mm f/1.4 "Klopper" immerhin ein erheblicher Fortschritt.