Re: How Do I determin file size for rendering? 2003-12-30 - By nospam2
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Hello Robbert,
You better do as you do (leaving the dpi at 72 whatever result you want) in
Carrara.
Actually, the dpi field in Carrara doesn't modify the dpi in the resulting
image : whatever you enter in the dpi field, you always ends withimages of 72
dpi.
I call that a bug, other disagree but still that is the result, being a bug or
not.
Thus the only solution left is the one you use : calculate the number of pixels
you need in the final output, then enter these values in the Height and Width
field.
If you really need an image with a dpi other than 72 dpi, you must rely on a
third software such as Gimp or Photoshop and change the dpi from inside this
third software.
Tuesday, December 30, 2003, 6:02:46 PM, you wrote:
RdG> In Carrara the Height and Width you set in the render
RdG> room indicate the number of "1/72nd inch" units the
RdG> final image should take up. Personally I think in
RdG> either pixels or inches (or cms) and not factors of
RdG> 1/72nd inches. Maybe print men can rip off numbers in
RdG> that coordinate space but I can't.
RdG> So I often just leave the DPI at 72 which will mean
RdG> that width and height you specify will be 1-1 with
RdG> pixel width and height of the final image. This makes
RdG> is simple for my poor noggin. If I'm targetting print
RdG> I calculate how many pixels in each direction are
RdG> needed before hand as mentioned below.
>>>>>
RdG> Height and width are both in pixels.
RdG> To convert to inches, that uses the printing
RdG> designation dpi or dots
RdG> per inch. In the case of a bitmap graphics file (which
RdG> is what is
RdG> created when you render), it is pixels per inch.
RdG> A computer monitor is 72 dpi.
RdG> A fast printout is 25 dpi.
RdG> A draft printout is 50 dpi.
RdG> A good printout is 75 dpi.
RdG> A quality printout is 150 dpi.
RdG> A high quality printout is 300 dpi.
RdG> A superior quality printout is 600 dpi.
RdG> For example, if you wanted to print out a rendering at
RdG> a quality
RdG> printout using the size of a standard photo (4"x6"),
RdG> then you would
RdG> render it at 600 x 900 [(4 x 150) by (6 x 150)]. That
RdG> same picture at
RdG> 300 dpi would be 1200 x 1800 [(4 x 300) by (6 x 300)]
RdG> Most of the time, the human eye cannot determain
RdG> between a high quality
RdG> and superior quality printout. You can always go
RdG> higher in dpi, but
RdG> very rarely is it required. I tend to use a quality
RdG> printout of 150 dpi
RdG> and I occassionally use a high quality printout of 300
RdG> dpi if there is
RdG> enough detail that is warrented.
RdG> Hopefully this helps.
RdG> <<<<
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Best regards,
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