JPEG images resolution and externalfigure size

JPEG images resolution and externalfigure size

[Christoph Reller]

Hi,

When using the currently latest version of ConTeXt to include a JPEG
image as in the MWE below, the resulting image size in the PDF is half
the size when compared with earlier versions.

\setupexternalfigures[location={local,global,default}]
\starttext
\externalfigure[hacker.jpg][scale=1000]
\stoptext

The actual width (in the PDF) of the hacker.jpg image is:
- ConTeXt version 2016.12.28: approx. 44 mm
- ConTeXt version 2016.07.01: approx. 88 mm

The correct width would be 86.868 mm (513 pixel / 150 DPI * 25.4).

Is there a factor 2 lost somewhere?

Cheers,

Christoph
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: JPEG images resolution and externalfigure size

[luigi scarso]

On Thu, Jan 12, 2017 at 2:45 PM, Christoph Reller
<christoph.reller@gmail.com> wrote:
> Hi,
>
> When using the currently latest version of ConTeXt to include a JPEG
> image as in the MWE below, the resulting image size in the PDF is half
> the size when compared with earlier versions.
>
> \setupexternalfigures[location={local,global,default}]
> \starttext
> \externalfigure[hacker.jpg][scale=1000]
> \stoptext
>
> The actual width (in the PDF) of the hacker.jpg image is:
> - ConTeXt version 2016.12.28: approx. 44 mm
> - ConTeXt version 2016.07.01: approx. 88 mm
>
> The correct width would be 86.868 mm (513 pixel / 150 DPI * 25.4).
>
> Is there a factor 2 lost somewhere?
>

we  are fixing it.

-- 
luigi
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : http://contextgarden.net
___________________________________________________________________________________