I'd like to see Sigma put out a new 24mm fast prime. They already have a 20, 24, and 28mm f/1.8s but they're the older style lens body and lack Sigma's HSM (USM) and are just "ok" IQ wise. I would assume the new 24mm would be akin to the 30mm f/1.4 optically (GREAT glass and as good ALL DAY LONG as the 35mm L from Canon - (if you haven't shot both lenses more than a couple times in varying conditions, just shut up because it's all of the 35mm L for stills (if not more) and MUCH better in low light and video too). I have a mix of Sigma, Canon and Zeiss glass and if you shoot both video and stills, the thing I like about Sigma primes is their focus rings are a little stiffer, in some cases larger diameter than their EF counterparts (i.e. Sigma 50mm f/1.4 vs Canon EF 50 f/1.8, 77mm vs 58mm) and make pulling manual focus MUCH easier...not as easy as Zeiss which no one compares too in manual focus smoothness but definitely better than the EF lenses and equal to the L lenses (if not maybe a tad smoother depending on which one) I wish I could afford all the Zeiss primes but I can't so I have a mix of 3 Zeiss, 3 L's, and 6 Sigmas...and have never had any quality issue with any of them, not one repair, not one calibration...don't believe the QA/QC hype, it's disproportionate to the real number of issues...and a good photographer knows how to use their lenses, look how long it takes to really get the most out of a lens like the 50mm f/1.2 L... people complain about the sharpness of it compared to the EF 50s...some tests show the $99 50mm EF II is even sharper from f/2-f/8 and smaller (tests are rarely all encompassing though); but the 50mm f/1.2 L it has it's merits and takes time to get the most out of it...when you do, it's amazing glass.
