[yochan]

兩支想選其一，邊支好呢？
即係想問16-35mm的質素值唔值貴過17-40mm幾千蚊?
如果邊個用過以上兩支鏡，煩請給我少少意見，唔該!

[mpalex]

which camera u use?
i use 20D, now i have 16-35
but personally i think 17-40 is better for quality

[WingLee]

for film 16-35 is better, for 1D & 1Ds 17-40 is better, for other Canon DSLR 16-35 is better. (For image quality only)

[Fluorite]

Compare~
http://luminous-landscape.com/reviews/lenses/canon-17-40.shtml

[BFCY]

I think for DSLR 17-40 should be the one because we can easily adjust the ISO up say 1600 (Canon's noise control is excellent). No need to spend double $ for one faster stop.

Also, super wide lens are usually for landscape, F2.8 is not required in most cases.

Unless you have $$$$$, that is another story.

[leohippo]

17-40好似中間鬆wo.....
L鏡........