[jimw]

Brother,

Kindly need your help to advise which one is better for my 400D.

1) EF-S 17-55mm f/2.8 IS USM
2) EF 17-40mm F4 L

recently only one "Sigma 18-200mm F3.5-6.3 DC OS" which have been used for 1-2 yrs.

Many thankss

[wongunder]

EF-S 17-55mm f/2.8 IS USM is the best choise
17-40 f4 tele just to 40, non- is,
but the peice is chaper than 17-55. 2.8 is

[jimw]

thanks bro,

since 17-55 f/2.8 are totally out of stock in MK area,
i bought the 17-40mm one.

[Panda1802]

17-40 ok,我之前去日本都是單用一支17-40已夠

[h0001244]

17-40 is good if it works with FF

[Obi-Wan]

no need to think for 40D, EF-S 17-55mm f/2.8 IS USM is the BEST for APS-C

jimw
u can still buy a 17-55/2.8 IS later