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  • Setting Beamer aspect ratio / screen size

    From Robert Heller@21:1/5 to All on Sat Apr 5 13:59:11 2025
    beamer version: 2022/09/13 v3.68
    texlive-base version: 2022.20230122-3

    How do I set the Beamer aspect ratio / screen size?

    Beamer seems to default to a 3:4 aspect ratio, but modern screens are 16:9,
    how can I make beamer use a wider aspect ratio? I'm not finding an option for that.


    --
    Robert Heller -- Cell: 413-658-7953 GV: 978-633-5364
    Deepwoods Software -- Custom Software Services
    http://www.deepsoft.com/ -- Linux Administration Services
    heller@deepsoft.com -- Webhosting Services

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  • From Axel Berger@21:1/5 to Robert Heller on Sat Apr 5 20:53:02 2025
    Robert Heller wrote:
    How do I set the Beamer aspect ratio / screen size?

    RTFM: <Ctrl><F><"aspectratio"><Enter>

    In my old version it's chapter 8.3

    The defined ratios are: aspectratio=54, %1610,169,149,54,_43,32

    The papersizes for beamer are defined in mm. This results in lots of
    rescaling. For that reason I have the following in my private style file
    always loaded last:

    ---------------------------------------------------------------
    \ifFAB@aspect%
    \ifdim\beamer@paperwidth=16.00cm%
    \setlength{\beamer@paperwidth}{6.4in}%
    \ifdim\beamer@paperheight=10.00cm%
    \setlength{\beamer@paperheight}{4in}%
    \else\ifdim\beamer@paperheight=9.00cm%
    \setlength{\beamer@paperheight}{3.6in}%
    \fi\fi%
    \else\ifdim\beamer@paperwidth=14.00cm%
    \setlength{\beamer@paperwidth}{5.6in}%
    \setlength{\beamer@paperheight}{3.6in}%
    \else\ifdim\beamer@paperwidth=13.50cm%
    \setlength{\beamer@paperwidth}{5.4in}%
    \setlength{\beamer@paperheight}{3.6in}%
    \else\ifdim\beamer@paperwidth=12.80cm%
    \setlength{\beamer@paperwidth}{5.12in}%
    \setlength{\beamer@paperheight}{3.84in}%
    \else\ifdim\beamer@paperwidth=12.50cm%
    \setlength{\beamer@paperwidth}{5.6in}%
    \setlength{\beamer@paperheight}{4.48in}%
    \fi\fi\fi\fi\fi
    \geometry{papersize={\beamer@paperwidth,\beamer@paperheight}}
    \fi}
    ---------------------------------------------------------------

    All frame sizes now have round numbers in inches and with common
    projector resolutions come out as 200 dpi. I believe this helps show
    better images.


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  • From Peter Flynn@21:1/5 to Axel Berger on Tue Apr 8 22:22:33 2025
    On 05/04/2025 19:53, Axel Berger wrote:
    Robert Heller wrote:
    How do I set the Beamer aspect ratio / screen size?

    RTFM: <Ctrl><F><"aspectratio"><Enter>

    In my old version it's chapter 8.3

    The defined ratios are: aspectratio=54, %1610,169,149,54,_43,32

    The papersizes for beamer are defined in mm. This results in lots of rescaling. For that reason I have the following in my private style file always loaded last:

    I asked the maintainers some years ago if they could add '141' as an aspectratio option, to support A-sizes (eg A5 = 14.85cm × 10.50cm),
    which they kindly did.

    This provided a shape that fits most modern wide-screen projectors
    *reasonably* if not optimally, without the need to recompile the slides on-the-fly at a conference to suit the oddball projectors that hotels
    and conference centres seemed to provide. It also ensures that a PDF
    print version of the slides will fit the paper in most printers (outside
    the USA). That option still appears to be there in beamer.cls

    Peter

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  • From Dr. Engelbert Buxbauum@21:1/5 to All on Sat Apr 12 09:34:20 2025
    In article <vsrcvf$2e6ds$1@dont-email.me>, heller@deepsoft.com says...

    beamer version: 2022/09/13 v3.68
    texlive-base version: 2022.20230122-3

    How do I set the Beamer aspect ratio / screen size?

    Beamer seems to default to a 3:4 aspect ratio, but modern screens are 16:9, how can I make beamer use a wider aspect ratio? I'm not finding an option for
    that.

    The manual describes that in section "8.3 Frame and Margin Sizes": \documentclass[aspectratio=169]{beamer}

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