How big a lens to flex a plastic body?

Discussion in 'Digital SLR' started by RichA, Jul 1, 2007.

  1. RichA

    RichA Guest

    Be obtuse. You know error 99 can mean a whole slew of problems with
    those cameras from "dirty contacts" to sensor failure.
     
    RichA, Jul 2, 2007
    #21
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  2. It will be alright now that American pilots are trained not to use the full
    rudder in flight.
    When they did get trained to use the full rudder a couple of planes had
    their tail ripped off.

    (The main thing the pilots forget when under pressure is that the plane will
    try to fly level if you release the controls so you shouldn't need to do
    violent control changes unless you are trying to dodge missiles.)
     
    [email protected], Jul 2, 2007
    #22
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  3. RichA

    frederick Guest

    You suggest that it could be because of plastic in the body, and I'm
    being obtuse?
     
    frederick, Jul 2, 2007
    #23
  4. RichA

    Guest Guest

    Technically Carbon Fibre like Fibreglas are both plastics.
     
    Guest, Jul 2, 2007
    #24
  5. RichA

    G.T. Guest

    "All the error 99 problems"? Did you count them all? How many were
    there Rich, 3? You're such a dumbass.

    Greg
     
    G.T., Jul 2, 2007
    #25
  6. RichA

    RichA Guest

    http://www.smartcomputing.com/techsupport/detail.aspx?guid=&ErrorID=27235

    Error Message:
    Error 99
    Translation:
    This error message may be generated by several versions of Canon
    digital cameras, including the 10D, 20D, and others. When this error
    message appears, the camera stops working. While other Canon error
    messages reference specific problems, the Error 99 code is less
    precise and often indicates a problem with an undetermined source.
     
    RichA, Jul 2, 2007
    #26
  7. RichA

    G.T. Guest

    Funny, I don't see a count of all Canon cameras that have suffered from
    error 99 problems. Do you have a count Rich?

    Greg
     
    G.T., Jul 3, 2007
    #27
  8. RichA

    dwight Guest

    Well, if we're going by anecdotal evidence, then the Error 99 code is a mere
    possibility. I've never seen it.

    dwight
     
    dwight, Jul 3, 2007
    #28
  9. RichA

    Robert Coe Guest

    :
    : : > Someone came into a camera store the other day and traded in his D80
    : > for a D200. He said he did it because the large zoom (heavy) he was
    : > using was flexing the body outward slightly at the mount. I think it
    : > was the 80-400mm. The sales person asked if he was supporting the
    : > lens with his hand. He said he was but still felt that the body was
    : > being flexed slightly when he moved fast to shoot sports subjects. The
    : > D80 body appears to be about as robust as a plastic body is right
    : > now. Which make me wonder about the dynamics of longer heavy zooms
    : > used on lesser bodies than the D80. Obviously, given the speed and
    : > focal length of these lenses, it wouldn't take much misalignment to
    : > affect focus on the sensor.
    : >
    : Maybe he was just mistaken, last time I looked most plastic bodies were just
    : that and nothing more, stainless steel chassis with the plastic just there
    : to cover the chassis.

    If the plastic is fastened to the frame correctly, it should add to the
    stiffness of the camera, not detract from it. The way you make a product
    lighter and cheaper is to have as much of it as possible contribute to the
    structural integrity of the whole. This is notably true with automobiles and
    airplanes, but it applies to any object that has to withstand mechanical
    stress.

    Bob
     
    Robert Coe, Jul 3, 2007
    #29
  10. RichA

    RichA Guest

    And titanium is a metal just like lead but they are hardly alike.
     
    RichA, Jul 3, 2007
    #30
  11. RichA

    G.T. Guest

    Nice non-sequitur!!!

    Just like there are appropriate metals there are also appropriate
    plastics. Glad you finally realize that Rich!

    Greg
     
    G.T., Jul 3, 2007
    #31
  12. RichA

    Charlie Self Guest

    It will what? Some planes, sure. Many, maybe most, don't fly level
    when hands off unless the autopilot is engaged.

    No comment on your rudder BS.
     
    Charlie Self, Jul 7, 2007
    #32
  13. RichA

    -hh Guest

    .... Which make me wonder about...


    Rich tends to spend a lot of his time "wondering", rather than
    actually researching and learning.

    But the camera's autofocus system will simply adjust to put the image
    *in* focus on the plane, regardless of if there's a little extra
    offset somewhere upstream of it.

    Problem solved.



    -hh
     
    -hh, Jul 7, 2007
    #33
  14. RichA

    Guest Guest

    Err 99 is Canon's version of WTF!
     
    Guest, Jul 7, 2007
    #34
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