[EMAIL PROTECTED] wrote: >Better yet, buy the Tamron SP 20-40 2.7-3.4. I have it. I did a lot of >research comparing it to the 20-35. While it is a bit slower at the long >end it is sharper at the edges than the Canon and comparable in the middle - >for a lot less money.
the tamron does have higher MTF score, but first thing is its color rendition, it's cooler than the canon lenses, then its flare control is horrible... i'd stick with canon if all your other lenses are canon made... 20-35/2.8 or 20-35/3.5-4.5 are all good choices. ---------------------------------------------------------------------- That's a lot of baloney! First the great the range in a wide angle zoom, plus having a fixed aperture reduces the resolution. Case in point, the 20-35mm F2.8L is sharper than the 17-35mm F2.8L. Now varying the aperture you can reduce that loss to a degree. As you go wider you get more aberrations. Obviously you have not used the Tamron or you would not have said what you did. I would bet you own the Canon lenses and are speculating from what you heard third hand. Speaking as a person who has ACTUALLY used them the flare is not bad on the Tamron, the colors are NOT cooler, but the various distortions inherent with wide angles are 1% or so greater. You do get a near normal focal length at 40mm which you don't get with the others, and the lens is tack sharp (yes, it is sharper than the Canon lenses). If I were to buy one today and money were a consideration, I would be looking at the Sigma 17-35 F2.8-4L or again the Tamron. The Canon 20-35 F3.5-4.5 is good but not great. You can get the same optical quality in a Tokina 20-35mm 3.5-4.5 or others. If you have to have a Canon lens (as some on this list do) then the best is the Canon 20-35mm F2.8. Tack sharp but you lose the wider end compared to the newer 17-35 or now 16-35mm. Let me state it here first, I would bet a week's salary that the 16-35mm F2.8L will not be sharper than the older 20-35mm F2.8L at comparable focal lengths. And without a doubt will cost at least $US1100. You heard it hear first. Peter K * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
