Good results with Oly 4/3rds compared to Canon EF lenses?

Discussion in 'Canon' started by Paul D. Sullivan, Jan 26, 2007.

  1. I've been looking at some of the work some buds have been doing
    with their cameras. One has a Canon and uses the same lenses on
    his digicam that he used on his 35mm fim cam. Another has an
    Olympus setup with the dedicated 4/3rds digital-only lens setup.

    In visually comparing them side by side, it seems like the
    Olympus setup is more "precise" and consistent edge to edge vs
    the Canon.

    I'm wondering if others are seeing this too, and if so, is it
    because the Oly lenses are specifically tailored for their CCD
    while the Canon was not designed to optimize the lens to their

    I'd appreciate any helpful discussion or input. I'm not sure
    which way to commit when it comes to getting a DSLR, and I'd like
    to have as much good info and opinion as possible.

    Paul D. Sullivan, Jan 26, 2007
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  2. Paul D. Sullivan

    Mark² Guest

    Edge to edge...what?
    There are SO many possible variables to the technique they may have used,
    that this particular comparison you refer to is impossible to speculate
    about without a lot more information.
    Mark², Jan 26, 2007
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  3. In visually comparing them side by side, it seems like the
    The finished digital image.
    Paul D. Sullivan, Jan 26, 2007
  4. Paul D. Sullivan

    Mark² Guest

    I should have asked, "consistently" what?

    I'm not sure what it is you observed.
    Mark², Jan 26, 2007
  5. Do all canon bodies that can accept those film lenses contain
    CCD's that are the same size and in the same position?

    Thanks for the reply.
    Paul D. Sullivan, Jan 26, 2007
  6. No. Canon dSLRs use Canon-manufactured _CMOS_ sensors in one of three sizes:
    24 x 36 mm ("FF" or "full frame"), 19.1 x 28.7 mm ("1.3x"), and 15.1 x 22.7
    mm ("1.6x").

    People who have worked with film in a variety of formats (sizes) realize
    that larger formats offer a tradeoff: it's harder to create good images with
    a larger format camera, but when you do get a good image, you get a much
    better image than a smaller format camera would have acquired.

    IMHO, the same is true in digital. Maybe it's easier to shoot with a 50/2.0
    lens on a 4/3 camera, but the 5D with a 100/2.0 (a larger more expensive
    lens) will produce better images when you put in the extra effort.

    David J. Littleboy
    Tokyo, Japan
    David J. Littleboy, Jan 26, 2007
  7. Paul D. Sullivan

    Joan Guest

    Joan, Jan 26, 2007
  8. You could look at the samples from both cameras at dpreview and decide for

    David J. Littleboy
    Tokyo, Japan
    David J. Littleboy, Jan 26, 2007
  9. When the sensor and lens are designed as a pair, you can get better

    Many of the other DSLRs are simply 35mm camera designs recycled with
    modifications using lenses which were not optimised for the job. Olympus
    (and the 4/3 system in general) were designed from scratch with the
    special needs of silicon sensors in mind.

    Having said that, image quality may not be the only factor in choosing an
    SLR - camera handling and the breadth of the system components may matter,
    not to mention cost.

    David J Taylor, Jan 26, 2007
  10. Paul D. Sullivan

    Skip Guest

    Agree with noise, but lenses certainly have an effect on color. But I'd
    guess that Mark's point is to know what the problems were with the images to
    ascertain whether the camera, lens or operator were at the root of the
    Skip, Jan 26, 2007
  11. Paul D. Sullivan

    Skip Guest

    If you are talking about cropped, finished images, I'd have to say, in this
    case, and without seeing examples, that the fault lies with the operator.
    Oly has a stellar reputation for glass, Canon's best lenses are among the
    best in the world. Since you don't say what lenses were being used, or even
    what cameras, only brands, it is impossible to answer your question with any
    Skip, Jan 26, 2007
  12. Edge to edge...what?
    I'm talking about UNCROPPED digital images initially produced by
    the cameras without ANY editing being done.
    Paul D. Sullivan, Jan 26, 2007
  13. Paul D. Sullivan

    Mark² Guest

    Maybe that would seem obvious to you or me, but his description is so vague
    that I wonder what he's really seeing that gives him this impression of
    Mark², Jan 26, 2007
  14. When talking about 35mm lenses used on sub-35mm sensors you are generally
    correct, although there is a greater magnification from sensor to print
    size if the sensor is sub-35mm, so lens defects /could/ be more visible.

    DX lenses are simply lenses optimised to work over the smaller image
    circle that a cropped 35mm sensor requires. Reduces price and perhaps
    size and weight. More cost-effective.

    On the other hand, the 4/3-system lenses are designed to make the light
    incident at an angle nearer to 90 degrees than is possible with revamped
    35mm SLR designs, and typical silicon sensors react worse to off-axis
    light than does 35mm film. So it is entirely possible that the
    performance is better, particularly near the edges of the image.

    David J Taylor, Jan 26, 2007
  15. Paul D. Sullivan

    Bill Funk Guest

    Again, what camera models, what lenses, and what, exactly, are you
    comparing in the images?

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    Bill Funk, Jan 26, 2007
  16. What about posting as adults with some consideration for others do?
    John McWilliams, Jan 26, 2007
  17. Paul D. Sullivan

    Neil Ellwood Guest

    The glass have self colour and chromatic corrections can alter colour in
    your images, even if everything else is perfect a lens can still
    Neil Ellwood, Jan 26, 2007
  18. Lenses are made with glass of different color. Especially if they're
    from different manufacturers in widely separated years. (The lenses for
    one camera-system from one manufacturer are generally reasonably uniform
    in color rendition.)

    I don't mean really blatant "bright red" types of different colors, but
    differences that can be measured and even seen quite easily.
    David Dyer-Bennet, Jan 26, 2007
  19. Paul D. Sullivan

    Skip Guest

    You said "FINISHED DIGITAL IMAGE"!! (See, I can yell, too.) Still, it is
    impossible to answer the question without knowing what lenses, camera
    bodies, internal processing, etc. were used, or without seeing examples.
    Skip, Jan 27, 2007
  20. Paul D. Sullivan

    Mark² Guest

    Still too many possible variables...

    -Were both using the right WB setting?
    -Were apertures within similarly sharp range for their lenses (two or three
    stops up from wide open, usually around f8-or so)? ...If the lens settings
    weren't optimal, it's very tough to scrutinize a sensor or body.
    -Was camera-motion blur a factor?
    -Subject motion?
    Mark², Jan 27, 2007
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