I doubted for a long time, waited until we get cheaper to 5 thousand (the bourgeois have long been $ 150) and took it. Reviews for this model are mixed - someone praises, someone does not. Basically, they blame the "noisy" stm of the fortieth (compared to the silent 18-135 stm). I do not have a 650D, so this is not a disadvantage for me. Optically, the 40 f/2.8 is noticeably better than its main competitor, the 50 f/1.8 ii, which even an inexperienced photographer will see when comparing shots taken in the same situation. There are no problems with AF, like the younger fifty dollars, the focal length is not radically different, when shooting in a limited space - sheer convenience. Very pleased with this lens. Completely replaced my 50 f/1.8 ii and moved my 50 f/1.4 purchase to the back of the queue :) If aperture 2.8 suits you, feel free to take it.
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