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Canon 17-55mm or sigma 18-35mm ?

Started Feb 2, 2014 | Discussions thread
MAC Forum Pro • Posts: 18,502
another curve ball

thamer08 wrote:

Hello

I am planing to get new lens sharp and high IQ and I found the best choice for my 450d these two lenses

they have the same price on amazon and i am confused of decide which better to me

canon 17-55mm f2.8 is usm

the good

-better zoom range for many use

- has IS

the bad :

- build quality is not good as L lenses

- there are other lenses with similar range and aperture but more less price

sigma 18-35mm f1.8

the good :

- it is new brand compared to canon 17-55

- 1.8 is faster and better in low light

- buying it is similar to buy many prime lenses with f1.8 (24mm,28m,30mm,35mm)

- better build quality

the bad :

- very heavy even more heavy than long zoom lenses !

- small zoom rang

- no IS

- I read there is some focus issues with sigma lenses and bad copies !

sorry for the language because the English is not my native

your 450 body is holding back the resolution equation

upgrade the body to at least the SL1 or T4i or T5i to gain a stop of better noise performance at high iso

http://www.dxomark.com/Lenses/Compare/Side-by-side/EF-S-17-55-f-2.8-IS-USM-on-Canon-EOS-450D-versus-Sigma-18-35mm-F18-DC-HSM-A-Canon-on-Canon-EOS-700D-versus-Canon-EF-35mm-F2-IS-USM-on-Canon-EOS-700D___169_185_1141_870_1086_870

but then here is the thing.  The 17-55 IS on a 450 only scores 7 MPix... that is low

whereas, the sigma 18-35 f1.8 scores 15 MPix on a 700d!

my 35 f2 IS scores 14 MPix on a 700d and has 4 stop IS

if you plan to go FF down the road, what I did was buy the 35 f2 IS and the 24 IS and run them on two light weight crop bodies, in my case the T4i and SL1.

 MAC's gear list:MAC's gear list
Canon EOS 7D Mark II Canon EOS RP Canon EOS M6 II Canon EOS R8 Canon EF 70-200mm f/2.8L USM +7 more
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