EF 24-105mm f/4L IS USM vs. EF 100mm f/2 USM

Discussion in 'Digital Photography' started by Chris7, Jan 18, 2010.

  1. Chris7 macrumors 6502

    Joined:
    Aug 8, 2008
    Location:
    Lost in Thought
    #1
    (Probably a silly question, but...)

    Wondering how the EF 24-105mm f/4L IS USM @ 100mm and f/4 compares re: sharpness and chromatic aberration to:

    Canon EF 100mm f/2 USM @ f/2

    Canon EF 100mm f/2 USM @ f/2.8

    Thanks,
    Chris
     
  2. Grimace macrumors 68040

    Grimace

    Joined:
    Feb 17, 2003
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    with Hamburglar.
    #2
    Fred Miranda usually has a lot of good information on lenses from users.

    Most primes will be sharper and have less CA than most zooms. That said, the 24-205mm is a heck of a lens.
     
  3. Phrasikleia macrumors 601

    Phrasikleia

    Joined:
    Feb 24, 2008
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    Over there------->
    #3
    That's the week end of the 24-105. It's a convenience zoom that does very well for its generous range, but the extra range you get with it is a bit soft. Primes will of course be much sharper, as you can see from these SLRgear charts:

    All set to f/4:

    (Click to enlarge)

    [​IMG]

    They don't have results for the EF 100mm f/2, so I've included the two 100mm macros (original model and new L lens). As one would expect, the new L version of the 100mm macro is by far the sharpest at f/4. (Lower and pinker colors are better. Raised blue means softer. The corners of each rectangular plane are the corners of the frame on an APS-C sensor. If you want to see full-frame, just choose that tab on the SLRgear.com site.)
     
  4. Chris7 thread starter macrumors 6502

    Joined:
    Aug 8, 2008
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    Lost in Thought
    #4
    Thanks Grimace and Phrasikleia.

    In different reviews, photozone had some charts of the 24-105 f/4L IS USM at various focal lengths @ f/4, and the EF 85 f/1.8 IS. The the latter seemed to compete well, even at f/1.8. I read elsewhere the EF 100 f/2 USM has similar performance to the EF 85 f/1.8.

    So I think this prime would do fine for me.

    -Chris
     
  5. JFreak macrumors 68040

    JFreak

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    Jul 11, 2003
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    Tampere, Finland
    #5
    I cannot even think of *how* should one compare these two... :eek:
     
  6. Phrasikleia macrumors 601

    Phrasikleia

    Joined:
    Feb 24, 2008
    Location:
    Over there------->
    #6
    I used to have the 100 f/2. Such a fun lens! And yes, very sharp. The only reason I sold it was because I bought the 100mm f/2.8L IS. The only negative about the 100/2 is that it exhibits some nasty CA wide open in really high-contrast situations, but that's not unusual for fast primes.
     

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