Professional Web Applications Themes

Build Quality Poly-carbon vs Metal - Photography

I got my 28-135 IS back from Canon today. It had been dropped twice. Once on wooden floor and once on concrete. About three months afte the second drop (concrete) it stopped working. What did Canon to to fix it? Replace main printed circuit board. This kind of confirms what I had long suspected for both lens and bodies. That for all of us non-professionals the weakest point of both is the electronics and it doesn't mater weather it's poly-carbon or metal. Jim *----------------------------------------------------------------* * Check-out my web site at: http://SwensonStudio.com * * landscape and travel photographs, featuring gorgeous sunsets ...

  1. #1

    Default Build Quality Poly-carbon vs Metal

    I got my 28-135 IS back from Canon today. It had been dropped twice.
    Once on wooden floor and once on concrete. About three months afte the
    second drop (concrete) it stopped working. What did Canon to to fix
    it? Replace main printed circuit board. This kind of confirms what I
    had long suspected for both lens and bodies. That for all of us
    non-professionals the weakest point of both is the electronics and it
    doesn't mater weather it's poly-carbon or metal.

    Jim

    *----------------------------------------------------------------*
    * Check-out my web site at: http://SwensonStudio.com *
    * landscape and travel photographs, featuring gorgeous sunsets *
    *----------------------------------------------------------------*
    Jim Guest

  2. #2

    Default Re: Build Quality Poly-carbon vs Metal

    "Jim" <com> wrote... 

    Why do you think it doesn't matter? For all we know poly-carbon
    can be better if it absorbs the shock better and passes less of
    the shock to the electronics. OTOH, metal can be better because
    it deforms less when under stress and hence has smaller
    displacements which can cause the PCBs to crack... IOW, in
    different situations different factors can contribute differently
    to the result...

    Of course, given all other factors equal (strength, elasticity,
    shock absorption, viscosity), I'd prefer a lighter lens...

    Victor


    Victor Guest

  3. #3

    Default Re: Build Quality Poly-carbon vs Metal

    x-no-archive: yes

    "Jim" <com> wrote in message
    news:google.com...
     

    Kinda' makes you wonder if it's all just "planned obsolescence," doesn't it?

    Today's super-duper electronically-controlled lenses just are not going to
    last as long as yesterday's mechanical beauties.

    That seems to be the inevitable trade-off.


    Jeremy Guest

Similar Threads

  1. [Q] Metal window - no updates, no clicks
    By Peter Amberg in forum Mac Programming
    Replies: 2
    Last Post: August 4th, 04:02 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139