A couple of optical formula patents from Sigma have appeared. There is no mention of mount types in these optical formulas, so we'll have to wait and see if either will ever make its way to the RF mount. First up is a 50-140mm f/2.8 for APS-C equipped cameras. It would basically give you a [...] The post Sigma working on APS-C 50-140 f/2.8 and an external zoom full frame 70-200 f/2.8 appeared first on Canon Rumors - Your best source for Canon rumors, leaks and gossip....
Published By: Canonrumors - Friday, 30 June, 2023