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Sigma 18-125mm F3.5-5.6 DC

4882618_125dc_1_
Review Date: Apr 1, 2006 Recommend? | Price paid: Not Indicated

 
Pros: Large zoom range, not to expensive, pretty sharp (if focused properly).
Cons:
Unreliable AF at the wide end of the zoom range, further none for the price and zoom range.

I bought the lens with my Canon 350d (rebel xt) to be used as the "standard" zoomlens.

On most points the lens performs about what you probably would expect for the price. The lens has some CA, and at wide open shots vignetting is often clearly visible. AF is quite noisy (not a real problem to me), and not very fast, but often good enough.

The only really poor thing here seems to be the AF accuracy at the wide end of the zoom range. The lens is acutually pretty sharp at all focus lengths, but due to bad focusing, wide angle shots are almost always soft when autofocus is used. If you have the time; use manual focus, or otherwise zoom in a bit, take focus, zoom out an get the shot. This ofcourse, is not always an option.

So, overall I'm pretty happy with the glass, except for the bad focussing accuracy at the wide end. Sometimes it can be resolved, it also can be very frustrating.


 
Sigma 18-125mm F3.5-5.6 DC

4882618_125dc_1_
Review Date: Apr 1, 2006 Recommend? | Price paid: Not Indicated

 
Pros: Large zoom range, not to expensive, pretty sharp (if focused properly).
Cons:
Unreliable AF at the wide end of the zoom range, further none for the price and zoom range.

I bought the lens with my Canon 350d (rebel xt) to be used as the "standard" zoomlens.

On most points the lens performs about what you probably would expect for the price. The lens has some CA, and at wide open shots vignetting is often clearly visible. AF is quite noisy (not a real problem to me), and not very fast, but often good enough.

The only really poor thing here seems to be the AF accuracy at the wide end of the zoom range. The lens is acutually pretty sharp at all focus lengths, but due to bad focusing, wide angle shots are almost always soft when autofocus is used. If you have the time; use manual focus, or otherwise zoom in a bit, take focus, zoom out an get the shot. This ofcourse, is not always an option.

So, overall I'm pretty happy with the glass, except for the bad focussing accuracy at the wide end. Sometimes it can be resolved, it also can be very frustrating.


 
Sigma 18-125mm F3.5-5.6 DC

4882618_125dc_1_
Review Date: Apr 1, 2006 Recommend? yes | Price paid: Not Indicated | Rating: 7 

 
Pros: Large zoom range, not to expensive, pretty sharp (if focused properly).
Cons:
Unreliable AF at the wide end of the zoom range. Further none for the price.

I bought the lens with my Canon 350d (rebel xt) to be used as the "standard" zoomlens.

On most points the lens performs about what you probably would expect for this pricetag. The lens has some CA, and at wide open shots vignetting is often clearly visible. AF is quite noisy (not a real problem to me), and not very fast, but probably good enough for most users.

The only really poor thing here seems to be the AF accuracy at the wide end of the zoom range. The lens is acutually pretty sharp at all focus lengths, but due to bad focusing, wide angle shots are almost always soft when autofocus is used. If you have the time, get manual focused, or otherwise you zoom in a bit, use AF to focus, zoom out an get the shot. This ofcourse, is not always an option (especially for action shots).

So overall, I really like the lens, except for the bad autofocussing, which can sometimes be very frustrating.