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How about changing the default output file type for both Windows and
Unix version to PNG?
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On 25/04/2010 19:44, clipka wrote:
> How about changing the default output file type for both Windows and
> Unix version to PNG?
I'd be for that.
-- Chris
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Le 25/04/2010 12:11, Chris Cason nous fit lire :
> On 25/04/2010 19:44, clipka wrote:
>> How about changing the default output file type for both Windows and
>> Unix version to PNG?
>
> I'd be for that.
ok,... irc mode: me too!
Does mac have a different 'prefered' file format ?
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clipka wrote:
> How about changing the default output file type for both Windows and
> Unix version to PNG?
yes please
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> How about changing the default output file type for both Windows and
> Unix version to PNG?
I totaly agree. In fact, it could be the default for all versions.
Alain
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Hmm, I vote no. Sorry to be the one nay-sayer here. Given the past problems of
different applications not reading the embedded gamma of .png images correctly,
is this a good idea? Or am I missing something that I should know about?
Is this idea based purely on image quality (.png vs. .jpeg, for example)?
Ken
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Am 25.04.2010 22:08, schrieb Kenneth:
> Hmm, I vote no. Sorry to be the one nay-sayer here. Given the past problems of
> different applications not reading the embedded gamma of .png images correctly,
> is this a good idea? Or am I missing something that I should know about?
>
> Is this idea based purely on image quality (.png vs. .jpeg, for example)?
The idea is basically to adapt the output file defaults to the changes
of time. Question is of course, what criteria should the default format
fulfil?
I think the paramount critera should be that (a) the files can be easily
exchanged between applications as well as via the internet, and (b) the
file format does not use lossy compression.
In my opinion that pretty much leaves us with PNG as the only choice.
As for gamma, note that gamma issues also exist with any other image
format (except for Radiance HDR and OpenEXR, but those are not
widespread enough to qualify as a default output format); the only
difference is that the PNG file format /promises/ proper gamma handling
but /some/ software fails to comply, while most other file formats don't
even give the promise in the first place.
For a user adhering to best practices, /at worst/ PNG will still be just
as good as any other formats.
Of course there may be reasons for a user to deviate from best
practices; in that case, they can choose their own default output file
format by placing "Output_File_Format=Whatever" in their standard
povray.ini.
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> How about changing the default output file type for both Windows and
> Unix version to PNG?
Why not for all versions?
Alain
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Am 25.04.2010 23:20, schrieb Alain:
>> How about changing the default output file type for both Windows and
>> Unix version to PNG?
>
> Why not for all versions?
With me having not much of an idea about Macs anyway, I pass that
question on to any Mac experts listening right now...
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clipka <ano### [at] anonymous org> wrote:
> I think the paramount critera should be that (a) the files can be easily
> exchanged between applications as well as via the internet, and (b) the
> file format does not use lossy compression.
Yes, I do see the need for that. But as a practical matter, I wonder if there is
a discernable visual difference between a .png file and one saved as a
highest-quality .jpeg? (I suppose that's open to debate.) The real point being
that .jpeg *is* a universal standard (lossy, of course); but more importantly,
it has no embedded gamma (AFAIK!!)--which means that how it shows up in
application X is basically the same as in app Y or app Z--regardless of how
those apps deal with embedded gamma in an image. I guess mt main worry is this:
Not all of us have the *latest and greatest* versions of
image-manipulation/viewing software, to view 'correct' .png images in. (My own
version of Photoshop is quite outdated, for example, and AFAIK doesn't read
embedded gamma correctly. And I'm even wondering about the latest version of
Firefox!) I suppose that most/all up-to-date versions of software have addressed
this issue--but that's just a guess. In the final analysis: Can we expect a .png
image to show up correctly even in all 'modern' software? A .jpeg image
eliminates that question (given it's image-quality shortcomings.)
> As for gamma, note that gamma issues also exist with any other image
> format..
True--but that's across-the-board, as you say. I.e., with an image format
lacking an embedded gamma, it's a monitor/system-set-up problem, not an
image-specific one.
>
> For a user adhering to best practices, /at worst/ PNG will still be just
> as good as any other formats.
>
Given *best practices* of course. :-P If such a .png 'default' is made a part
of POV-Ray, I can only hope that the documentation will make it clear as to what
those best practices are. In the past, this situation has been a can of worms.
Ken
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