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2:3 aspect ratio crop factor 2.2x?

Discussion in 'Panasonic Cameras' started by Engawa, Oct 5, 2015.

  1. Engawa

    Engawa Mu-43 Regular

    May 23, 2014
    I recently tried 2:3 aspect ratio on my gx7 and gm1 and I think it is more enjoyable to use because of the greater size of the image in both the lcds and evf of the gx7.

    It is inconsequential, but I'm curious what the crop factor would be in 2:3 aspect ratio.

    Is it 2.2x?

  2. Klorenzo

    Klorenzo Mu-43 All-Pro

    Mar 10, 2014
    W H Diag Crop
    36 24 43.27 1
    23.6 15.6 28.29 1.53 (APS-C)
    17.3 13 21.64 2.00 (m43)
    17.3 11.43 20.73 2.09 (m43 3:2)

    You get a 14MP picture.
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  3. eteless

    eteless Mu-43 All-Pro

    Jun 20, 2014
    I'm unsure about Panasonic cameras however with Olympus if you shoot 2:3 and use RAW you still get the full uncropped image (Handy if you're using the viewfinder with a bar at the bottom rather than overlay).
  4. pdk42

    pdk42 One of the "Eh?" team Subscribing Member

    Jan 11, 2013
    Leamington Spa, UK
    Huh? Surely 3:2 is cropped from 4:3 so how can it be bigger?
  5. fredlong

    fredlong Just this guy...

    Apr 18, 2011
    Massachusetts USA
    The image on either of the screens is bigger because the screens are 2:3 rather than 3:4.
  6. eteless

    eteless Mu-43 All-Pro

    Jun 20, 2014
    ^ that.

    The EVF in the E-M1 is 4:3 however if you use it with the settings bar at the bottom it displays black bars on the sides, setting 3:2 changes it to sort of full screen. If you the EVF with the settings overlayed then there's no reason to change the crop.
  7. Engawa

    Engawa Mu-43 Regular

    May 23, 2014
    Thank you!
  8. Engawa

    Engawa Mu-43 Regular

    May 23, 2014
    I hadn't checked the RAW files yet so I'm not sure if they are uncropped with Panasonic.
  9. dwig

    dwig Mu-43 Top Veteran

    Jun 26, 2010
    Key West FL
    As mentioned, these are the DIAGONAL crop factors with the exception of the last one.

    In the real world such simple comparisons between formats with differing aspect ratios is useful only as a very rough guide. There are 3 main "crop factors" when comparing m4/3 to FF:

    • native aspect ratios = 2x
    • both at 3:2 = 2.1x
    • both at 4:3 = 1.8x

    Which applied depends on what aspect ratio you will use for the final print.
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