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Thread: 24mm L vs 17-40mm, worth the upgrade?

  1. #1
    Formerly user: Arzuhl
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    24mm L vs 17-40mm, worth the upgrade?

    Hi Guys.
    Thinking of trading my 17-40 for a prime 24mm L for better image quality, anyone out there been in this position and happy with the results. I'll be using it on a 5D MkII.
    Cheers for any advice.
    Cameras: Canon 5D MkIII, Canon 7D gripped.
    Lenses: 24mmmm f1.4 L, 24-105mm f4 L, 50mm f1.2 L, 85mm f1.2 II L, 70-200 f2.8 L IS II
    Flash: Canon 600 EX RT.
    Tripod: Manfrotto 190CX Pro3, Manfrotto Automatic Monopod, Manfrotto 498RC2 Ball Head.
    Bank Manager: Unhappy.


  2. #2
    Ausphotography Regular
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    Quote Originally Posted by Arzuhl View Post
    . . . trading my 17-40 for a prime 24mm L for better image quality, anyone out there been in this position and happy with the results. I'll be using it on a 5D MkII. . . any advice.


    I have comprehensively tested the 17 to 40, but decided the 16 to 35 was better for my purposes.

    I am not sure that the a choice is “EITHER a 17 to 40L OR a 24L”

    The 17 to 40 is pretty slick in the middle of its focal range – so if you want crisper from the 24L and you will be using it at F/5.6, then I would suggest save your money.

    OTOH – if you want to use the Prime at >F/4, then that is a different kettle of kippers.

    The 24L is “fantastic” wide open (considering it is F/1.4 and 24mm).

    There is optical vignette wide open and also CA at the edges across the aperture range: both can be addressed in PP to some extent and the vignette is not noticed in many scenes.

    My advice is to re-asses what you want the lens for (what outputs).

    I think if you generally shoot at F/5.6, or thereabouts, then you might be better off with the convenience of a zoom and better to spend your money elsewhere, not on a Fast Wide Prime.

    However, I could not do without BOTH a zoom, for convenience of use; and also a set of FAST Primes, across the wide to medium telephoto range (16ish to 135ish), as this is the range of FL where I make > 80% of my Photographs and I use FAST: it is just the 80/20 Rule ad a Bank Manager likely knows that application.

    ***
    The Pudding and the Proof:
    (View Large)
    Here is the 24 at ⅓Stop intervals, from F/1.4 to F/8 showing the optical vignette:


    ***

    And here is the 24 used at F/1.4 in soft light and the one of the reasons why I love this lens:

    JPEG from RAW – N.B.: Sharpened but NO Noise Reduction
    F/1.4 @ 1/100s @ ISO800 HH


    And, Bottom Right:



    And, Middle Left:



    And, Centre:


    ***

    At Night, WIDE OPEN:

    “That Side”
    F1.4@1/8s@ISO1600 HH

    ***

    At Night again:

    "Circus before Daybreak 02"
    F/2.5 @ 1/6s @ ISO800 HH

    ***

    And indication of Bokeh:


    Available Light Portrait #9567749
    F/3.2 @ 1/40s @ ISO800 HH

    ***

    The 24L can be used in sunlight, at smaller apertures, also:

    Love Those Glasses

    ***

    I note you have a 7D and yet you state that the 24L will be used on the 5DMkII.

    The 24L makes a very good Normal Fast Prime for an APS-C . . . and I use my 24L exactly for that purpose, as the normal lens on my APS-C cameras, here is an old shot:

    Text Sample #120034

    In this regard: The 24 would make an excellent addition and make the perfect prime trilogy (24 / 50 / 135), for your Dual Format Kit – which is also exactly how I use those three Primes - perhaps you might consider that application, also.


    WW
    Last edited by William W; 06-08-2011 at 1:16am.

  3. #3
    Formerly user: Arzuhl
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    Thanks so much for taking the time to make such a detailed response and judging form the shots you provided the 24mm L is an awesome lens, hmmmm, now the hard part begins, saving the money
    Thanks again for your reply it was much appreciated.
    Cheers.

  4. #4
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    Wow, great response Willliam, although I wish people would stop showing how good some prinmes are, as I am trying to live happily in a world of Zoom lens, without wanting(read here, spend money I have not got) to own 6 or so prime lens's as well
    I have this silly idea, that I should actually go and take photos with all this photography gear I have already accumulated, before I collect any more!

    See some of my photos here.
    https://www.facebook.com/pages/David...5888662?ref=hl
    And my very randomly updated blog.
    http://davidarnold.wordpress.com/

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