QUOTE(Grajindo @ Apr 4 2017, 03:48 PM)
was in dilemma as well between 1740 and 16-35 f2.8 II sometime ago. but ended up with 17-40 because of the size, which is a somewhat important for me. and of course the price as well.
i'd say that if you do not need the extra stop of light, then 17-40 would be a really good one to go with. and for IQ, i think both of these are not extremely good at it if you are shooting wide open. at least not for the 17-40. having said that, it's good enough for me. and the extra 1mm difference, which doesnt matter to me as well since i've a 14mm to cover that
so to me, the main difference is the size and extra stop of light (which is not tht important for me in this case)
P/S: 16-35 f4 IS would be a different story tho
QUOTE(Lego Warfare @ Apr 4 2017, 05:01 PM)
straight? hardly any distortion with the 16-35 f4 though

QUOTE(zeroendless @ Apr 4 2017, 09:39 PM)
Used to have both, sold the 17-40 first later traded in the 16-35 I. The difference is in the pudding - Just an extra stop. The 16-35 I is not a great lens, sharpness is mediocre as oppose to latest canon new lenses. I recall my 17-40 is a hair sharper than my 16-35. The 16-35 II is also no a huge upgrade if one were to compare what 16-35 F4 IS has to offer.
If you want a walk around wide angle, 17-40 at F4 may be too slow. it is however, a great budget landscape lens. if money is not an issue, you should consider 16-35 F4 IS.
Thanks for the input guys, just wan to inform my sigma lens stopped working after a week tho
https://drive.google.com/open?id=0B58ydk8UU...LXlpbjc3N29mTWcSigma 20mm f1.4
Got via kldslr and luckily the chap there is nice enough to arrange a refund for me without any questions asked
What sigma said is basically there are instances where camera and lenses doesn't connect and it's a known issue
But my case was the auto focus just stopped and next thing I realise the entire focus barrel was stuck , when u try to focus with camera u can hear motor moving but nothing actually moves and when u manual focus it just doesn't work
So yeah, deswai I need a wife angle, or else would have been happy with that 20mm
It's sharp, feels great it hand and the colour rendition is awesome