printing problems

i'm working on a poster.the final size is 29"x48".the printer output is 150 dpi.i have scanned images in at 30 dpi.i am working full size and my files are to big to manage(300mb)can i lower the resolution on the mac?can i work 1/2 size?i don't know if i have any other choicesplease help me
pufftubeAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

macmediaCommented:
I'm not sure what you are printing to, but I have an Encad printer (36" width, 300dpi Ink jet).  With this printer, if you have a tiff that you need to print at 29" x 48", a good resolution for this or an HP printer would be around 125 DPI which will result in a file size of 83mb at CMYK.  Output will be quite sharp and satisfactory (providing the scan is of decent quality and you correctly use the Unsharpen filter in Photoshop)

If you are outputting this on an imagesetter and going to an offset (sheetfed) press, then you will have a large file - 266dpi, 133 Line screen, CMYK, - 376mb.

You don't really have too much leeway from the size of the appropriate printing means.  If you lower the resolution from the above values, then you will be sacrificing on the quality - the values shown are perfect for the prints.

I hope this helps

Kent
Mac Media
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Apple Software

From novice to tech pro — start learning today.