eugene_ho1

<p>Bob O'Sullvan, what kind of use have you put into these two lenses?<br>

Would the 17-60mm and 17-50mm be similar to the quality of the two lenses?Worth it or not? I would like to try the quality of a prime, but the 50mm 1.8 from Canon seems a bit long in focal length. So are these lenses worthy to use in terms of money quality ratio?</p>

 

<p>I am using a 450d with the 18-55 kit lens.<br>

In my country the price for he two lens are about the same.</p>

<p>1. How does the Tamron zoom lens perform against a Canon prime? Is the zoom range worth it?<br /> <br /> 2. Another question is, I have been searching for wide angle primes, and the cheap ones from Nikon and Olympus doesn't have Canon mount. Does a adapter affects anything? Can I use the focusing motor on them? how much do they usually cost?<br /> <br /> Thanks</p>

<p>Thank you Rainer T for giving such a wonderful site, but I am finding some problems upon the MTF, which was said as quantity of sharpness in the site. According to Tommy DiGiovanni, the Tamron AF 17-50mm f/2.8 should be better in terms of IQ, but according to the results, it merely touches 2150 line, while my EF-s 18-55mm IS touches it more often. The EF-S 18-200mm f/3.5-5.6 IS seems to consist great image quality, arround 2350. The EF-S 10-22mm f/3.5-4.5 USM with a small zoom range which should be of high quality according to Steven F, but it is far from 2150. Am I reading the scales wrong?</p>

 

<p>Maybe a prime lens is what i need, after all, I think the EF-s 18-55mm IS image quality lacks a lot. Would a wide angle zoom lens alter the image quality a lot compared to prime lens?<em><br /> </em></p>

<p>I own the canon 450d with its kit lens EF-s 18-55mm IS and am looking for a travel lens upgrade.<br>

EF-S 18-200mm f/3.5-5.6 IS - everything seems fantastic but the barrel distortion is my concern for architecture, is it still acceptable?, I don't shoot in RAW<br>

EF 28-135mm f/3.5-5.6 IS USM nice focus scale, IS, but not cheap<br>

EF 28-105mm f/3.5-4.5 II USM - EF 28mm on 450d, not gd for wide angle shots<br>

EF-S 17-85mm f/4-5.6 IS USM - barrel distortion, how is it compared to EF-S 18-200mm f/3.5-5.6 IS<br>

My first choice probably EF-S 18-200mm f/3.5-5.6 IS, anyone used it before? Thanks for you help.</p>