Events (plus of course other examples like astrophotography mentioned above). Sometimes you need a wider angle of view than 24mm, and sometimes light levels are too for the subject movement, and flashes aren't always appropriate. While bodies are getting better and better at high ISO's, adding a whole stop of light gathering with the lens is quite attractive.endiendo said:But I don't understand why people need a wide angle with F2.8. You don't do portrait with a wide-angle that had "by nature" some distortion.
You use the wide angle at F8, 10 and more.. so why bother and pay for a "new" f2.8 that would be heavier and much costly... New versions cost always a lot more with canon.
Yes, landscape, architecture and many other uses for an ultrawide rectilinear lens don't go hand in hand with a fast aperture, but just because it isn't for you doesn't mean not for anyone.
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