Q. What is the sharpest Canon lens?

Discussion in 'Canon' started by Annika1980, Dec 20, 2004.

  1. Having owned many Canon lenses, I can tell you absolutely that the
    sharpest telephoto lens is the 300 f2.8.

    Of course you have made this question a 'bait' by not defining if the
    "sharpest" lens is Sharpest in a range. I.E. Zoom lenses, telephoto
    lenses, standard lenses and wide angle lenses might have extracted a
    better answer.

    All groups have different models with 'better sharpness' than others.
    You can hardly expect a zoom lens with constantly moving elements to
    constantly be as sharp as a fixed lens with fixed elements.

    Which did you actually want to enquire about?

    James
     
    James Douglas, Dec 21, 2004
    #21
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  2. Annika1980

    Alan Browne Guest

    The OP, who is known to be a little loose with his credit cards, wants his "I
    love me" Christmas present. His photo postings amuse us. (Well, the titles do,
    anyway). So we love to help him add to the US statistics on personal credit
    card debt. The fact that the 200 mm f/1.8 outresolves his 20D by about 4 or 5
    to 1 makes no difference to him.

    I don't know Canon lenses very well, but I surmise that one of the best bangs
    for the buck is the 28-135 USM IS for around US$400. I assume that is afordable
    for most people if they suck down a few less beers/week for a year.

    The absolute best Canon ka-boom/sheckle is the 50mm f/1.8 at US$75.

    Cheers,
    Alan
     
    Alan Browne, Dec 21, 2004
    #22
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  3. The point is if you are going to talk about a technical description of a
    lens, it would be good to use the right terminology. Sharp is a perceived
    quality not really one that can be measured. A given lens may be more sharp
    with one subject and less sharp with another. Of course you may judge them
    the sharpness different than I might.

    You may measure the number of lines per length that the lens may
    resolve, but that is not sharpness. You may talk about the contrast of the
    lens, but that is not sharpness. I suspect I might well judge an image
    sharpness different with or without my glasses.
     
    Joseph Meehan, Dec 21, 2004
    #23
  4. AnOvercomer 02, Dec 21, 2004
    #24
  5. Are you blind?
     
    uraniumcommittee, Dec 21, 2004
    #25
  6. Annika1980

    Annika1980 Guest

    From: James Douglas
    I'm looking to do some more stitched panoramics and I'm looking for the
    sharpest lens I can find. I did some preliminary testing between my 50 f/1.8
    and the 28-135 IS @ 50mm and the prime lens was bit sharper (as expected), but
    not so much that you'd even notice it at normal print sizes.

    I remember reading on photo.net about the old 100mm f/2 being one of the
    sharpest primes. I'd sure like to test it out if I could talk someone (Skip M,
    are you hearing this?) into lending me one.
     
    Annika1980, Dec 21, 2004
    #26
  7. Annika1980

    Annika1980 Guest

    The OP, who is known to be a little loose with his credit cards, wants his "I
    love me" Christmas present.

    That 200 f/1.8L does sound like a sweet lens, but it's a little out of my
    budget. I'd feel bad with a lens that is worth more than my car.

    The VISA goblins have been trying to convince me to get the 65mm MP-E macro
    lens. I could do some great things with that baby. Too bad there aren't many
    of them available used. Every time I get close to ordering a new one I take out
    my wallet and a bunch of guys dressed like vikings come storming at me. It's
    damn annoying.

    What's in YOUR wallet?
     
    Annika1980, Dec 21, 2004
    #27
  8. Annika1980

    Roxy Durban Guest

    I have shot with both the 300mm f/2.8L and the 400mm f/2.8L. I found the
    400mm to be considerably better. Maybe it was just a sample issue?
     
    Roxy Durban, Dec 21, 2004
    #28
  9. Annika1980

    S Lee Guest

    (Annika1980) choreographed a chorus line of
    high-kicking electrons to spell out:
    You already have the 28-135, right?
    It's a very nice lens.
     
    S Lee, Dec 21, 2004
    #29
  10. Annika1980

    Skip M Guest

    Bret, you're way too far away. OTOH, if you want to get shots of the beach
    in winter, or snow in summer, c'mon out, and we'll make a couple of days of
    it. I'm sure I can find some "decorations" for the scenery, if so
    desired... ;-) Of course, that won't test the sharpness of the lens, all
    that much...
    Or maybe come out for the Buick Open.
     
    Skip M, Dec 21, 2004
    #30
  11. Leica lenses are ALL tuned lab darlings - hence the price!
    I seriously doubt you'll find significant sample variations between the
    Leica 180s.
     
    Chris Loffredo, Dec 21, 2004
    #31

  12. Will it make any difference on a Digitoy?
    ; )
     
    Chris Loffredo, Dec 21, 2004
    #32

  13. Will it make any difference on a Digitoy?
    ; )
     
    Chris Loffredo, Dec 21, 2004
    #33
  14. Annika1980

    Annika1980 Guest

    From: "Skip M"
    You guys don't have UPS out there?
    Damn, you really must live in the boonies.
     
    Annika1980, Dec 21, 2004
    #34
  15. None, actually. their standards are the tightest in the industry.
     
    uraniumcommittee, Dec 21, 2004
    #35
  16. Annika1980

    Alan Browne Guest

    My cards are always paid off monthly. I have three but use only one, the other
    two being travel backups. The only debt I have is the mortgage... which is 15
    years with half gone and I can plunk down any amount at any time w/o penalty (we
    can't deduct mortgage interest, so there is no advantage in a 30 yr. mortgage).
    For CC's, I only buy what I can payoff when the CC bill comes next month. So
    I pay no interest, no fees. Car on 5 yr financing was paid in 18 months. I
    strive to be debt free. That's more important to me than any luxury or toy.

    Cheers,
    Alan
     
    Alan Browne, Dec 21, 2004
    #36
  17. Annika1980

    Alan Browne Guest

    Chris Loffredo wrote:

    I don't doubt that production Leica's fit a narrow variance, however, engineers
    worldwide on all products, measure the lab darling for spec compliance.
    Production lenses are not lab darlings and neccesarily have tolerances they can
    fit into.

    Secondly, to compare MTF charts of two lenses, the tests must be made on the
    same optical bench to assure consistency (eliminate bench optics variance).
    Preferably a half dozen of each lens type to get a feel for the variance,
    although that rarely happens (if ever).

    Cheers,
    Alan
     
    Alan Browne, Dec 21, 2004
    #37
  18. Annika1980

    Alan Browne Guest

    All production processes have tolerances in testing.
     
    Alan Browne, Dec 21, 2004
    #38
  19. (Annika1980) wrote:
    You guys don't have UPS out there?
    Damn, you really must live in the boonies.
    ================================

    UPS is almost everywhere and we are very busy this week, so if you send
    anything this week, pack it well.
    What can Brown do for you?Ā®




    Cody,

    http://community-2.webtv.net/AnOvercomer02/PhotographyLinks
     
    AnOvercomer 02, Dec 21, 2004
    #39
  20. Annika1980

    Bill Tuthill Guest

    The 300/2.8 is sharper at f/2.8 (where it matters) than the 200/1.8
    is at f/1.8, although the 200/1.8 is sharper at f/8.

    http://www.photodo.com/pix/lens/mtf/CAEF30028L.gif
    http://www.photodo.com/pix/lens/mtf/CAEF10018L.gif

    Contax has a 4.7 Photodo-rated lens, the Planar 45/2, but those are
    the only two above 4.6.

    http://www.photodo.com/pix/lens/mtf/COG452.gif

    Hmm, the Minolta 100/2.8 macro's MTF graphs look better than that!

    http://www.photodo.com/pix/lens/mtf/MIAF10028MACR.gif
     
    Bill Tuthill, Dec 21, 2004
    #40
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