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  1. #1
    Join Date
    Feb 2006
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    Toronto
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    22

    Sigma AF 24-70mm f/2.8 EX DF DG

    Hello guys,

    Thinking of buying one for walking around (instead of 18-55 kit). Opinions?
    Any problems with AF on XT? Sharpness, softness?
    Found this review here
    http://www.photozone.de/8Reviews/reviews/sigma2470.htm

    But would like to have more opinions.

    Mike

  2. #2
    Join Date
    Apr 2005
    Location
    Near St. Louis
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    3,528
    Quote Originally Posted by Hobbit
    Hello guys,

    Thinking of buying one for walking around (instead of 18-55 kit). Opinions?
    Any problems with AF on XT? Sharpness, softness?
    Found this review here
    http://www.photozone.de/8Reviews/reviews/sigma2470.htm

    But would like to have more opinions.

    Mike
    read through the reviews of this lens over at FM
    Nikon D90 | Sigma 10-20 HSM | DX 18-105 f3.5-5.6 VR | DX 55-200 VR | 35 f/2.0 D | 50 f/1.4 D | 85mm F/1.8 D | SB-800 x 3 | SU-800
    - - - - - - - - - - - - - -
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  3. #3
    Join Date
    Feb 2006
    Location
    Toronto
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    Thanks!

    The reviews are usefull.
    I understand that it is a bit heavy and not ergonomic but otherwise it has decent to excellent qualities. I wonder about low light focusing. Is it good enough?

  4. #4
    Join Date
    Dec 2004
    Location
    Los Angeles, CA
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    3,109
    Quote Originally Posted by Hobbit
    The reviews are usefull.
    I understand that it is a bit heavy and not ergonomic but otherwise it has decent to excellent qualities. I wonder about low light focusing. Is it good enough?
    I returned mine. It had AF problems and weird contrast / color problems. Also, way soft at f2.8 at all FL. Plus it was big and heavy. Unless you're getting one for free, I'd put it at the bottom of your list. I'd get a Canon 28-105 3.5-4.5 II USM first.
    Canon A720 IS, 40D w/ BG-E2N, 28 1.8, 50 1.4, Sigma 70 2.8 macro, 17-40 F4 L, 24-105 F4 L IS, 70-200 F4 L IS, 430 EX, Kenko 2X TC & Ext Tubes, AB strobes and more...
    View my photo galleries here: imageevent.com/24peter

  5. #5
    Join Date
    Apr 2005
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    Near St. Louis
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    You might want to consider the Tamron 28-75 2.8 instead - they seem to be the 3rd party leader for Canon right now. . .
    Nikon D90 | Sigma 10-20 HSM | DX 18-105 f3.5-5.6 VR | DX 55-200 VR | 35 f/2.0 D | 50 f/1.4 D | 85mm F/1.8 D | SB-800 x 3 | SU-800
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  6. #6
    Join Date
    Mar 2006
    Posts
    539
    I don't own this lens, but one thing that stands out is the 82mm filter size. Filters of that size are quite pricey. Not sure if it vignettes if you use a step down filter adapter to, say, 77mm.

  7. #7
    Join Date
    Feb 2006
    Location
    Des Plaines, IL
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    9,560

    Thumbs up Walkin' around...

    The TAmROn SP AF28~75mm f/2.8 XR Di LD offers a sharp, open aperture shot... and all in a very light lens (18oz) It also works on full sensor rigs.

    Often called one of the most reliable lenses in the third-party ranks, it's hard to go wrong with the results this particular lens turns in for a mere $375.

    If that is too rich for you, the Canon EF 28~105mm f/3.5-4.5 USM II may still be a decent choice. While not offering the low light level and "Depth of Field" mastery of the TAmROn, you add some telephoto capability and still have some decent play for about $250.

    Try 'em both, if you can. See what works...

    POST # 500
    Last edited by DonSchap; 06-01-2006 at 06:09 PM.
    Don Schap - BFA, Digital Photography
    A Photographer Is Forever
    Look, I did not create the optical laws of the Universe ... I simply learned to deal with them.
    Remember: It is usually the GLASS, not the camera (except for moving to Full Frame), that gives you the most improvement in your photography.

    flickr & Sdi

  8. #8
    Join Date
    Nov 2004
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    1,807
    i compared that to the tamron 28-75 more than a year ago. optically, the sigma i got was a dud - need calibration or something. a properly calibrated version is supposed to be quite good optically. other than optics, it was much bulkier than the tamy, a hell of a lot noisier when focussing, the lens is fully extended at wide angle, and it required two steps to switch from AF to MF (pain the butt), though the wider angle of 24mm was nice. AF capability was the same, and macro mode was very very similar with both lenses. i kept the tamron out of the two, but i eventually grew frustrated with the tamy and got rid of that too (lousy AF). i'd suggest sticking to canon USM stuff, and my vote goes to the canon 28-105 f3.5-4.5

    depending on what you shoot, you may not find 24/28mm to be wide enough on a 1.6x crop for an all-purpose, walk-around lens. if you haven't already compared 18mm to 24/28mm in person, i'd suggest you do that before committing to anything.
    Last edited by ReF; 06-01-2006 at 01:07 AM.
    canon 17-40 L, 70-200 f2.8 L, 400 f5.6 L, 50 f1.4 & f1.8, 1.4x TC, sigma 15 f2.8 fisheye, flash 500 DG Super, kenko extension tubes

    note to self: don't participate in sad, silly threads unless you're looking for sad, silly responses.

    "anti-BS filter" (from andy): http://dcresource.com/forums/showpos...94&postcount=4

  9. #9
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    Feb 2006
    Location
    Toronto
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    And again

    Thanks - I guess I will have to do some comparisons in the local stores.
    The problem is that I don't see much of 17/18 with decent quality/price combination. There is nothing like 28-135 IS or 28-105 USM for 17/18....

  10. #10
    Join Date
    Apr 2005
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    Quote Originally Posted by Hobbit
    Thanks - I guess I will have to do some comparisons in the local stores.
    The problem is that I don't see much of 17/18 with decent quality/price combination. There is nothing like 28-135 IS or 28-105 USM for 17/18....
    Well two new 17-XXs hit the market - Canon's 17-55 f2.8 IS for $1,179 and Tamrons new 17-50 F 2.8 Xr di II at $449.
    Nikon D90 | Sigma 10-20 HSM | DX 18-105 f3.5-5.6 VR | DX 55-200 VR | 35 f/2.0 D | 50 f/1.4 D | 85mm F/1.8 D | SB-800 x 3 | SU-800
    - - - - - - - - - - - - - -
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