What is breathing ??

Discussion in 'Digital Video' started by igmolinav, Sep 22, 2010.

  1. igmolinav macrumors 65816

    Joined:
    Aug 15, 2005
    #1
    Hi,

    What is breathing ... ??

    I got the following definition from Wikipedia:

    Would you please tell me a bit more. Suppose you have a 50 mm. lens and then you change the focus distance. How does (the) breathing (of the lens) come into play ??

    Thank you, kind regards,

    igmolinav.
     
  2. dmoon macrumors newbie

    Joined:
    May 11, 2010
    #2
    I think this refers primarily to zoom lenses where if you change focus the zoom changes a bit.

    -dmoon
     
  3. igmolinav thread starter macrumors 65816

    Joined:
    Aug 15, 2005
    #3
    Hi,

    Thank you : ) !!!

    So, it happens only with zoom lenses.

    I´ll try to post in a couple of hours the link to a 10´minute video
    in which the sales rep of Zeiss in the USA talks a bit about
    breathing, (towards the end of the video). I´ll post it later on
    tonight.

    Thank you again, kind regards,

    igmolinav.
     
  4. KeithPratt macrumors 6502a

    Joined:
    Mar 6, 2007
    #4
    No, it happens with primes too. Here's a Canon 50mm f/1.4 breathing.

    Without knowing this for a fact, I'd assume that when a lens manufacturer claims their lens does not breathe, it technically does, just imperceptibly.
     
  5. igmolinav thread starter macrumors 65816

    Joined:
    Aug 15, 2005

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