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Thread: canon nifty fifty w/ 25mm tube

  1. #17
    Kyle's Avatar
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    Holy friggin' cow. Link to the 100mm? That's incredible.

  2. #18
    Hello, I must be going... Not a Number's Avatar
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    A few words of caution with lower end extension tubes without electronics.

    1) You will not get focus confirmation. Some cameras will not take an exposure without focus confirmation.

    2) You will have to manually focus. This can be difficult depending on your eyesight, how bright your viewfinder is, how steady your hand is and how much the subject is moving.

    3) You will have to shoot in "stop-down" mode. This means you have to close down the aperture manually to determine the exposure. The viewfinder will go darker the smaller the aperture set. This makes it difficult or impossible to focus while stopped down. You can open the aperture to full to focus but you must remember to stop it back down for the proper exposure. If the lens does not have a manual aperture setting ring on it you will not be able to change or set the f stop.
    Grand Hotel... always the same. People come, people go. Nothing ever happens.

  3. #19
    Av8tor1's Avatar
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    Great advice Warren :-)

  4. #20
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    With my 'old' film camera, I had (actually still have them & everything else) a set of 3 extension tubes (3 different sizes). I used to take all kinds of macro shots - but as we know, the film experience is a bit different than the digital one (shoot pic, advance, shoot next pic, finish roll, send away for processing and see what you did in a week or two). While I enjoyed it immensely, the frustration level was also very high.

    With today's lenses, extension tubes, immediate feedback and digital stacking - wowza! The potential just blows my mind ...

    ... and Av's & Larry's posts just keep taunting me ....
    All the best,
    Ron
    You must do the thing you think you cannot do. --- Eleanor Roosevelt

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  5. #21
    Hello, I must be going... Not a Number's Avatar
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    Another alternative to extension tubes are diopter "close-up" lenses. These are lenses that screw into the filter mount on your regular lens. You'll lose infinity focus but none of the automation. The downsize is that if your lenses have different filter sizes you either need to buy a set for each lens or step-up/down adapter rings. The effect on image quality depends a lot on the quality of lenses.

    http://www.ulrix.de/misc/closeup/en/closeup.html
    Grand Hotel... always the same. People come, people go. Nothing ever happens.

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