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300 is a great place to start but if you are printing halftone screen, as a rule of thumb, you only need twice the resolution as the line screen you are using. (150 LPI = 300 DPI or 80 LPI = 160 DPI)
300 is a great place to start but if you are printing halftone screen, as a rule of thumb, you only need twice the resolution as the line screen you are using. (150 LPI = 300 DPI or 80 LPI = 160 DPI)
thanks I do have a graphic that gets halftoned.....
I run an AGFA imagesetter for a living and I can positively state that you only need 1.5 times the linescreen at final size. The RIP on the imagesetter is going to throw out all the information over that.
If you create your job/image at 100% and are not going to run over 65 line which is finer than most screen printer print then 100 dpi is more than enough. This size file will also run just fine on all the Large Format Digital Printers that I own or have run.
It will keep the files smaller, (a 12 x 15 RGB file will only be around 6 meg) which saves space on your and the printers hard drive and will probably enable you to email the file to your printer...
Sorry to sound so ill, but last week I received several jobs on DVD which had 2-3 gig files on them that after resizing them to what they needed to be were more in the 20 - 30 meg size...wasted hours and hours of my time.
Sorry to sound so ill, but last week I received several jobs on DVD which had 2-3 gig files on them that after resizing them to what they needed to be were more in the 20 - 30 meg size...wasted hours and hours of my time.
I hear ya yet it is always best to be safe. For color and manipulations the higher the res the better. Still one can save a copy at a lower resolution that fits the bill. Will print faster as well
I am also assuming that we save all of our work in CMYK instead of RGB.....is this true?
I use CMYK, because Ive been told that RGB is only good for lighting (television, computer monitor screen, etc) and CMYK works better for printing from the computer... I could be wrong, though..
Every color computer monitor and television in the world displays color using the RGB image mode, in which every color is produced with varying amounts of red, green, and blue light. (These colors are called additive primaries because the more red, green, or blue light you add, the closer to white you get.) In Photoshop, files saved in the RGB mode typically use a set of three 8-bit grayscale files, so we say that RGB files are 24-bit files.
These files can include up to approximately 16 million colors—more than enough to qualify as photographic quality. This is the mode in which we prefer to work when editing color images. Also, most scanners save images in RGB format. High-end drum scanners include "color computers" that automatically convert files to CMYK mode (see below), but RGB scanning is becoming more common even in shops with these scanners.
If you're producing images for multimedia, or you're outputting files to a film recorder—to 35 mm or 4-by-5 film, for instance—you should always save your files in RGB mode.
How much resolution do I need? 
