This will be a new feeling to some f/1.2 lens shooters, particularly those who’ve used Canon’s sluggish EF mount 50mm f/1.2 and 85mm f/1.2 lenses on a DSLR. Sony says the lens offers high autofocus performance and tracking even wide open at f/1.2. Maximum Aperture f/1.2 Minimum Aperture f/16 Lens Mount Sony E Format Compatibility Full-Frame Focus Type Autofocus Minimum focus distance 40cm Angle of View 47° Optical Design 14 Elements in 10 Groups Diaphragm Blades 11, roundded Image Stabilization No Filter Size 72 mm (Front) Dimensions 87 x 108mm Weight 778g But, it looks like the f/1.2 aperture made business sense because we finally find ourselves in a situation where a Sony 50mm f/1.2 lens actually exists. I suspect those would not have made good business sense, either. The next year, Sony actually said they could produce up to f/0.63 lenses for the E mount.
Maybe some demand exists for an f/1.2, but an f/1.0? Technically we could produce an f/1.0, but it would not make business sense. Yes we could, but there is no market demand. And at the time, it’s likely there wasn’t. Sony bounced back with a laugh, declaring that they could make f/1.0 lenses for Sony’s E mount, but they just chose not to. What’s particularly special about this lens and the fact that it even exists, is that it flies in the face of claims made a number of years ago when Canon, Nikon and Panasonic were jumping aboard the full-frame mirrorless train and Leica Manager Stephan Schulz specifically called out Sony’s E mount stating that it wasn’t designed for full-frame and couldn’t achieve fast apertures.
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