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Sigma Lens - need advice

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Bruno Candeias

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Hi

I'm planning to buy a multi-purpose lens for my 500d toreplace my EF 18-55II. I saw two alternatives made by Sigma that seem to be very interesting: the Sigma AF 17-70mm f/2.8-4.5 DC macro and the Sigma AF 18-50mm f/2.8 EX DC Aspherical IF. Which one do you recommend me? Thank you
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Bruno Candeias
 
If the 17-55 f2.8 Canon is not in the picture and you're only looking at Sigma, I'd say to wait until the new Stabilized version of the 18-50 f2.8 hits the shelves and compare to the other two prior to making your final choice.

Scott
 
But the two lens I've mentioned are at a very good price at a shop near my town... I wanted a opinion about this two, if possible...
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Bruno Candeias
 
Bruno Candeias said:
But the two lens I've mentioned are at a very good price at a shop near my town... I wanted a opinion about this two, if possible...
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Bruno Candeias
Click to expand...
Hi Bruno,

I own the Sigma 18-50mm ff2.8 EX DC Macro (very pleased) and have seen enough of the Sigma 17-70mm lens to know that I wouldn't consider giving up the constant f2.8 for the extra 20mm on the long end and the 1mm on the short end. Foot zoom and/or cropping easily compensates almost all the time.
 
Joe Photo Lover said:
Hi Bruno,

I own the Sigma 18-50mm ff2.8 EX DC Macro (very pleased) and have seen enough of the Sigma 17-70mm lens to know that I wouldn't consider giving up the constant f2.8 for the extra 20mm on the long end and the 1mm on the short end. Foot zoom and/or cropping easily compensates almost all the time.
Click to expand...
On a review of the 18-50 they said that Chromatic Aberrations with this lens is a problem. Is it?
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Bruno Candeias
 
Bruno Candeias said:
Joe Photo Lover said:
Hi Bruno,

I own the Sigma 18-50mm ff2.8 EX DC Macro (very pleased) and have seen enough of the Sigma 17-70mm lens to know that I wouldn't consider giving up the constant f2.8 for the extra 20mm on the long end and the 1mm on the short end. Foot zoom and/or cropping easily compensates almost all the time.
Click to expand...
On a review of the 18-50 they said that Chromatic Aberrations with this lens is a problem. Is it?
--
Bruno Candeias
Click to expand...
I haven't noticed any particular problem with this lens although I don't use it outdoors too often. Much better in this area than my Canon 17-85mm where CA & PF can be a real PITA.
 
My Canon 100/2.0 PF looks worse than my sigma 18-50/2.8 I would look more at the 2.8, the constant exposure is much better, also more versatile as a indoor/outdoor option. Borders for this lens seem soft, even when stopping down.
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Canon 7D / 40D
CANON
70-200/2.8 - 135/2.0 - 100/2.0 - 85/1.8
SIGMA
EX 50-500 - EX 120-300/2.8 - 18-200OS - EX 18-50/2.8 II - EX 50/1.4
TOKINA 12-24/4 - TAMRON 28-75/2.8
KENKO Pro300 2XTC - 1.4XTC
 
I had the old 17-70 (currently have the new image stabilized version). The 17-70 is an excellent choice - very good image quality at a low price.

I haven't used the Sigma 18-50, but have seen good reviews of it.

Think about the tradeoffs involved - the 17-70 gives you some extra range, but you give up some low light capability.

Also, if you have $450, the new 17-70 with image stabilization is also a great lens with the bonus of image stabilization (important towards the telephoto end) and an f:2.8 to f:4 range instead of f:2.8 to f:4.5
 
ScottD1964 said:
If the 17-55 f2.8 Canon is not in the picture and you're only looking at Sigma, I'd say to wait until the new Stabilized version of the 18-50 f2.8 hits the shelves and compare to the other two prior to making your final choice.

Scott
Click to expand...
Scott, any clues about the possible release date for the OS version of the 18-50?

I am looking to buy my 1st DSLR, and I'm still trying to figure out with which lens I will go (not sure about the 18-55 Canon offers) and I was thinking of Sigma's 17-70 or 18-50 just like Bruno does.

P.S.: I didn't mean to hijack this thread, but I'm mainly asking myself the same questions Bruno posted.
 
I checked with my local retailer, apparently the lens will be available around June (at least in Canada, maybe a little earlier in the US). I thought everyoen who will read this post and have an interest into that lens coudl use that information
 
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