victor_hooi Posted April 9, 2007 Share Posted April 9, 2007 heya, I recently bought a Canon 30D camera second-hand, my first dSLR (previouslyowned a 800si). I also acquired a Canon 35/2.0 at the same time. Anyway, I'm now looking at acquiring a second lens, hopefully a zoom. The Canon35/2.0 is nice, but somewhat annoying - I can't go wider when doing event orgroup photography, and I can't get any reach. The new lens will be a generalwalk-around lens, and maybe portraiture (more a bonus). Keeping in mind a tight budget, the Tamron 17-50/2.8 came highly recommended -I'm guessing to be around US$300-$400, right? However, other people also recommended the Sigma 24-70/2.8 and the Tamron 28-75/2.8. I do quite a bit of low-light shooting, and I want fairly fast auto-focus, hencethe preference for fixed f2.8 aperture. 1. How much of a margin would the Tamron 17-50/2.8 be optically superior to the24-70 or the 28-75? I just need an idea so I can weigh up the convenience of theadded reach of 70/75 (and the penalty of less at the wide end) versussharpness/contrast. Or is it just added range with no drawbacks =). 2. Also, any comments on the AF speed/accuracy, and build quality of these threelenses? (The two things most important to me, I think.) 3. Finally, just out curiosity - for those who have used the Canon 35/2.0 - howdoes this compare in sharpness/contrast to a normal 50mm lens (e.g. 50/1.8), andto the zooms? Would I be horribly disappointed if I jumped from the 35/2.0 to aSigma/Tamron zoom? Thanks,Victor Link to comment Share on other sites More sharing options...
roger_smith4 Posted April 9, 2007 Share Posted April 9, 2007 I just got a Tamron 17-50. Personally I care more about the wider wide end than a longer long end (75mm equivalent is long enough). The AF is quite fast on my 20D and locks focus quite well in low light. I don't know but would think the 17-50 and 28-75 are of similar optical quality but cover different ranges. Link to comment Share on other sites More sharing options...
sfdgs Posted April 9, 2007 Share Posted April 9, 2007 I bought a Sigma 24-70 and I ended up returning it because of focus problems and it was very soft up through f5.6. I ended up buying the canon 24-70 which is great. Since a budget is concerned, I have been told by several people and read many times here that both of those Tamron's are excellent. Just be wary of the Sigma, although mine may have just been a bad copy. Link to comment Share on other sites More sharing options...
brucecyr Posted April 9, 2007 Share Posted April 9, 2007 Might want to check out the results of this lens defect survey: http://www.bobatkins.com/photography/lens_defect_survey.html Link to comment Share on other sites More sharing options...
steve_dunn2 Posted April 9, 2007 Share Posted April 9, 2007 <p>I can't comment on the quality of any of those choices. But you're asking for a walkaround zoom, and to me, only one of the three lenses you mention can be a walkaround zoom on a 1.6-crop body. 28 or 24 just isn't wide enough; I need 17 or thereabouts. You could have the world's finest lens, but if it doesn't cover the focal lengths you need, what good is it?</p> Link to comment Share on other sites More sharing options...
leopoldstotch Posted April 9, 2007 Share Posted April 9, 2007 This <a href="http://www.the-digital-picture.com/Reviews/Canon-Digital-SLR-Camera-Reviews.aspx">Link</a> has reviews for all 3. As for AF speed, they won't really come close to a Canon USM, but may be acceptable, depending on what you shoot. The reviews always mention AF speed, so if you read up on the 3, you should be able to make your decision. Link to comment Share on other sites More sharing options...
milton-chris Posted April 9, 2007 Share Posted April 9, 2007 I'm not familiar with those lenses, and have another thought to possibly confuse you. I recently invested in the Sigma 17-70 Macro 2.8/4.5 and it is enjoying quite a bit of use as a walk-around lens on one of my XTi's (The other is pretty much full-time with the Sigma 10-20). The 17-70 has decent reviews and is giving me good results - paid about $450 Canadian for it. Link to comment Share on other sites More sharing options...
t_n1 Posted April 9, 2007 Share Posted April 9, 2007 I've used both Tamron 17-50 2.8 and 28-75 2.8. They are very similar in optical performance. Slightly soft at 2.8, razor sharp when stopped down to 3.2 or 3.5. The Tamron 28-75mm zoom covers a strange range on crop cameras, so I would recommend the 17-50mm ($400-$450). Link to comment Share on other sites More sharing options...
stacy_f Posted April 9, 2007 Share Posted April 9, 2007 I bought the Tamron 17-50/2.8 at the end of last year. It is a great lens. The sharpness of the lens is fantastic. At 2.8, results are good. Stop down a 1/2 stop or more and the results are hard to beat. Look at the reviews, most rave about the sharpness. The build quality is decent, but it is nothing like good, expensive "L" lenses. I have the Canon 24mm for my 10D and my XTi, and it was just not wide enough. The 17mm the Tamron has is the way to go. Get a telephoto or a longer, quality zoom to compliment this lens and you will be set. Link to comment Share on other sites More sharing options...
willhl Posted April 10, 2007 Share Posted April 10, 2007 <p>If you need fast focusing then you don't want th Sigma 24-70, I tried it in the shop and it was slow and noisy. I got the Sigma 17-70 as a walk around lens and it is good but not great and I'm starting to look for a bit more now. The range is good but I'm having some focus issues on occasions, that said I'm shooting fast moving action in low light so I'm asking a lot of the lens. </p> <p>This was all shot with the Sigma 17-70 on a 30D with 430EX: <a href="http://www.willsphotography.com.au/swingpatrol/2007MSF/">www.willsphotography.com.au/swingpatrol/2007MSF/</a></p> Link to comment Share on other sites More sharing options...
rainer_t Posted April 10, 2007 Share Posted April 10, 2007 As already said, the Tamron 17-50 and the Tamron 28-75 are performing very similar. As a single lens setup, I use the 17-50, and as a two lens setup, I often use the EFS 10-22 plus the Tamron 28-75. If you find the EF 35/2 a bit annoying because you cannot go any wider, you really should take the 17-50 ... the difference between 50 and 75 is not that signifficant as the difference between 17 and 28. Link to comment Share on other sites More sharing options...
bhubaneswar Posted June 19, 2008 Share Posted June 19, 2008 i am in the same situation low-light (no flash) event photography. I am considering between tamron 17-50 vs tamron 28-75. Low light and handholdability are important for me. while the 28-75 wont help me to take group photograph 17-50 is not good either in tight headshoulder shots. so i m considering tamron17-50 with canon 85 f/1.8. if its a single lens i would consider 85 f/1.8. comments are welcome. Link to comment Share on other sites More sharing options...
bhubaneswar Posted June 19, 2008 Share Posted June 19, 2008 sorry i forgot to mention i have canon ef 28-105 f/3.5-4.5 zoom lens that starts at f/3.5, goes to f/4 around 37mm and then to f/4.5 around 70mm. So in 28-37 range how much the difference ll be practcally for low light. Link to comment Share on other sites More sharing options...
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