POV-Ray : Newsgroups : povray.general : Ugent Printing help Server Time
6 Aug 2024 16:58:57 EDT (-0400)
  Ugent Printing help (Message 1 to 8 of 8)  
From: Mick Hazelgrove
Subject: Ugent Printing help
Date: 27 Feb 2002 14:10:12
Message: <3c7d2f14@news.povray.org>
HI all

It's me being a pest again.

I have to produce a rendering for a print. The final size will be !5x21 cm and it
should be 300dpi

Question: what size should I render it? The final pic will be in jpeg format

Thanks in advance

Mick


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From: Thorsten Froehlich
Subject: Re: Ugent Printing help
Date: 27 Feb 2002 14:43:49
Message: <3c7d36f5$1@news.povray.org>
In article <3c7d2f14@news.povray.org> , "Mick Hazelgrove" 
<mic### [at] mhazelgrovefsnetcouk> wrote:

> I have to produce a rendering for a print. The final size will be !5x21 cm
> and it should be 300dpi

(5 / 2.54 * 300) x (21 / 2.54 * 300) pixels


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From: Kevin Ellis
Subject: Re: Ugent Printing help
Date: 27 Feb 2002 16:08:24
Message: <3c7d4ac8@news.povray.org>
"Thorsten Froehlich" <tho### [at] trfde> wrote in message
news:3c7d36f5$1@news.povray.org...

> (5 / 2.54 * 300) x (21 / 2.54 * 300) pixels

Or did you mean 15x21, not 5x21, then it should be

(15 / 2.54 ) * 300 x (21 / 2.54) *300 = 1772 x 2480 pixels


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From: Mick Hazelgrove
Subject: Re: Ugent Printing help
Date: 27 Feb 2002 16:11:18
Message: <3c7d4b76@news.povray.org>
Thanks all

I just hope it renders in time!

Mick


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From: Dennis Miller
Subject: Re: Ugent Printing help
Date: 27 Feb 2002 19:09:35
Message: <3c7d753f$1@news.povray.org>
Why divide by 2.54? Won't that force the printer to interpolate?
I tend to work at 1:1; maybe that's overkill, but for a 12" x 18" print with
a printer of 271 dpi, I use 12 x 271 by 18 x 271.
Just curious about the scaling factor you used..
D.
"Thorsten Froehlich" <tho### [at] trfde> wrote in message
news:3c7d36f5$1@news.povray.org...
> In article <3c7d2f14@news.povray.org> , "Mick Hazelgrove"
> <mic### [at] mhazelgrovefsnetcouk> wrote:
>
> > I have to produce a rendering for a print. The final size will be !5x21
cm
> > and it should be 300dpi
>
> (5 / 2.54 * 300) x (21 / 2.54 * 300) pixels


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From: Apache
Subject: Re: Ugent Printing help
Date: 27 Feb 2002 19:13:25
Message: <3c7d7625@news.povray.org>
dpi = Dots Per Inch, so you'll have to convert from inches to centimeters.


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From: David F
Subject: Re: Ugent Printing help
Date: 27 Feb 2002 19:16:10
Message: <3c7d76ca$1@news.povray.org>
The main reason he used 2.54  was because mick wanted the image to be 15cm 
x 21cm, which needed to be converted to inches, hence the 2.54.  Hope that 
makes sense.

Dennis Miller wrote:

> Why divide by 2.54? Won't that force the printer to interpolate?
> I tend to work at 1:1; maybe that's overkill, but for a 12" x 18" print
> with a printer of 271 dpi, I use 12 x 271 by 18 x 271.
> Just curious about the scaling factor you used..
> D.
> "Thorsten Froehlich" <tho### [at] trfde> wrote in message
> news:3c7d36f5$1@news.povray.org...
>> In article <3c7d2f14@news.povray.org> , "Mick Hazelgrove"
>> <mic### [at] mhazelgrovefsnetcouk> wrote:
>>
>> > I have to produce a rendering for a print. The final size will be !5x21
> cm
>> > and it should be 300dpi
>>
>> (5 / 2.54 * 300) x (21 / 2.54 * 300) pixels
> 
> 
> 

-- 

David
smuchrusher <at> ameritech <dot> net
ICQ#: 118347772

3:16pm up 16:34, 0 users, load average: 1.13, 1.08, 1.04


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From: Thorsten Froehlich
Subject: Re: Ugent Printing help
Date: 28 Feb 2002 03:47:11
Message: <3c7dee8f$1@news.povray.org>
In article <3c7d753f$1@news.povray.org> , "Dennis Miller" <dhm### [at] attbicom>
wrote:

> Why divide by 2.54?

Because one inch is 2.54 cm, and thus you have to divide in order to convert
centimeters to inches.  It has nothing to do with some printer doing some
interpolation or something - in fact you probably misunderstood the original
question as it wasn't about some printer or printer settings but about the
image size in pixels for a 300 dpi printout.

    Thorsten

____________________________________________________
Thorsten Froehlich, Duisburg, Germany
e-mail: tho### [at] trfde

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