A surprise out of clear blue sky: Sigma announces 18-35mm F/1.8 lens!

While the big two (Canon & Nikon) successfully pursue the image of boring traditional companies, others like Sigma try to be inventive and gain a piece of market for themselves. Today, Sigma announced a new extraordinary lens: the 18-35mm F/1.8 DC HSM for APS-C sized sensors. Yes, this is not a typo; this zoom lens has constant F/1.8 aperture. As far as I know, no other photography lens has such aperture, the closest being Olympus with the two of their F/2 zoom lenses. Update: price is announced and it is only $799!

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