Next message: Leonard Rosenthol: "[WinMac] Re: Rule of thumb"
That's another way of looking at it... An 8x10 inch image would be 40
megabytes; or 10 megabytes per color; i.e. 30 megabytes for the same image in
RGB space.
I also deduce you're using a 175 lpi linescreen? That's pretty fine for a
press to hold... And the higher the linescreen, the lower the contrast ratios
(assuming a fixed dpi output from the imagesetter).
If your press can indeed hold a 175 lpi screen, try lowering it to 150 LPI
(300 pixel per inch scan) .IF. you can scan at 12 pixels per color (36 bit RGB
scans) instead of the standard 8 bits per pixel color depth: This will give you
better shadows and highlights.
Cheers!
Dan
>-----Original Message-----
>From: Mark Workman [mailto:mworkman@hgcpc.com]
>Sent: Friday, December 29, 2000 1:17 PM
>To: winmac@iffy.com
>Subject: [WinMac] Re: Rule of thumb
>
>
>We use 350 pixel/inch CMYK images and the size in megs is pretty close to
>half the size of the image in square inches. Makes for easy math.
>>
>> -> Here's a rough rule of thumb: An 8x10 inch 300 pixel per inch RGB scan is
>> 21
>> megabytes; 28 megabytes when you convert it to a CMYK image. Even
>using the 28
>> megabyte figure, that's 84 megabytes of free RAM (installed RAM minus
>> operating
>> system minus Photoshop); which puts what you need somewhere between 128 and
>> 192
>> MB of installed RAM.
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: Fri Dec 29 2000 - 11:33:37 PST