Where's infinity?

Discussion in 'Photographic Technique' started by miker4306, Apr 3, 2023.

  1. miker4306

    miker4306 New Member

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    Hi,

    I'm getting into macro photography, and I'm supposed to use Live View and manual focusing, first setting my lens focus "at infinity", then moving either the camera or subject into focus. BUT my Canon nifty-fifty has no infinity marking on the focus ring - what to do, what to do?

    Many thanks in advance for your responses.
     

  2. Marcus Rowland

    Marcus Rowland Member Site Supporter

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    A distant object is usually a good starting point - I generally use a church that's 230 yards from my house, about 210 meters, that's not true infinity but it's close enough for most purposes. Or clouds or the moon if they happen to be visible.
     
  3. johnsey

    johnsey Site Moderator Staff Member Site Supporter

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    in the day of manual lenses, it would be all the way focused (or almost all the way focused one direction) the one where everything in the distance was sharp..

    Without the focus distance marking its a bit of a guessing game.
    upload_2023-7-11_15-42-16.png upload_2023-7-11_15-41-55.png
     

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  4. Caladina

    Caladina Well-Known Member

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    ] if you using a 50mm for macro don't you get the lens as close to the subject until it cant focus any more? then your subject will be as big on the sensor as possible

    a way to test the best macro possible would be to shoot a tape or ruler, the least amount of mm you get across the sensor should be the best macro
    best i have managed is 2mm across the canon M50 sensor

    straight from camera jpeg, no edits, 2mm
    2mm.jpg
     
  5. Craig Sherriff

    Craig Sherriff Well-Known Member Site Supporter

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    I have a preferece for live view (larger image), plus you can use the magnify button (+) to aid in focusing
     
  6. johnsey

    johnsey Site Moderator Staff Member Site Supporter

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    Yea i think that is where the OP created confusion Macro/Closeup focus is the opposite of infinity focus..
    • Rack the focus one direction get very close till it it is perfectly in focus for up close limit.
    • Rack it the other direction and point it off in the distance for infinity.
     

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