Sigma has announced a new high-grade Art series 14mm F1.4 DG DN lens for Sony E (FE) and Leica L-mount cameras. It is available from the 23rd June at £1399 inc VAT or $1599 in the US.   Preorder WEX (Sony FE mount/ Leica L-Mount) B&H Photo US Sigma says the lens has been “optically optimised” for astrophotography and it’s described as the World’s fastest lens for this kind of work and thus should be highly corrected for coma at infinity focus. However, it’s important to stress the lens also is corrected through profiling in-camera as well; through the use of what’s now being euphemistically called “digital or mathematical elements”.…