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Lenses for video

Discussion in 'Filmmaking' started by Rider, Oct 25, 2010.

  1. Rider

    Rider Mu-43 Regular

    139
    Oct 14, 2010
    Are all of Panny's micro four thirds lenses optimised for video?

    Are any of Oly's?

    What does it mean to be optimised for video: silent AF, non-jerky AF with less hunting or both?
     
  2. jonima

    jonima Mu-43 Regular

    What I have read "optimized for Video" means that the auto focus is:

    Internal (no front lens movement)
    Fast
    Accurate (less hunting)
    Silent

    Also the zoomring should be smooth and silent.

    For Panasonic this is the 14-140 mm

    For Olympus the 14-150 mm and the 40-150 mm

    Also the diaphragm blades are mostly 7 and rounded (circulair) to ensure a nice out of focus effect.

    Also the long zoom range of the lenses are ideal for Video.


    Johan
     
  3. Rider

    Rider Mu-43 Regular

    139
    Oct 14, 2010
    How about the Panasonic 20/1.7 and 14/2.5. How do those focus?


     
  4. jonima

    jonima Mu-43 Regular

    Hi Rider,

    I have read in a few forums that first off all the 20mm is a great lens, but that the focus meganism makes some noice which can be picked up by the camera micro phone.

    https://www.mu-43.com/f38/panasonic-20mm-1-7-noise-other-questions-1485/

    On the DP review site it reads: "The focus motor is very quiet, and unlikely to intrude on any occasion. The 20mm F1.7 is also capable of continuous autofocus in movie mode." and "It's not as fast as the Panasonic 14-45mm or 14-140mm zooms".

    So mixed messages here.

    I have not found any info about the new 14mm 2.5.

    Johan
     
  5. bpalme

    bpalme Mu-43 Rookie

    15
    Sep 9, 2010
    The 20mm is one of the noisiest lenses. A loud buzz is present.