i've actually came across a magazine that requires 150dpi, it's called wall street journal, was doing the magazine ad for adidas golf~which somehow the magazine have lotsa requirements to it..not only the dpi, also the gray scale where it cannot exceed how many percent of grayscale...a fuss~

Your DPI will depend on your paper grammage. i.e 72dpi for newspaper, 150 dpi for thin magazine paper/newsletters and 300dpi for corporate brochures, art card quality.

damnit, should stick to web designing only, hahahaha, oh well, time to get my laptop to be able to take 300 dpi creations, going to be sooo slow

yeah...even by using a 3Gig proc and i.5GB of ram...my pc still slows down after opening the files...maybe shud try dual proc..hahaha

That's nothing to do with the DPI my friends. That's the required #(screen tones) for publishing materials. For example, normal magazines or brochures require 150# if uses art paper or art card and 133# if uses the simili paper. For newspaper they will ask for 100#. 150# is the standard tone and if you want your printing to be more solid usually, they will ask for 175# or 200#.

For images, standard is 300 dpi. Lowest to go is 250 dpi. When enlarging the image it is recommended to scan or do the image in 400 dpi. Either you make your image big and lower the dpi. It will take the same amount of time to process.

for me 300dpi is my normal standard
for larger project like big banner i will put more than 300

Does lower DPI create a blurer print?

If yes let say, I have an A4 (300dpi) pic and i can enlarge it to let say A3 wif 100 dpi?? will the enlargement produce a very visible blurness?

dual proc will not really help u in the photoshop or illustrator....

Erm.. i got a question here, if print banner then what dpi should i use? 300dpi? actual size? that'll be a few GB i need i guess...

Yes, lower dpi will definitely make your enlarged pic look blur and with jagged edges. If you want to enlarge any images, just maintain the 300dpi resolution, although by enlarging with 300dpi will still make your pic at least 5-10% blur

300-400dpi is the best. No need to venture till the GB sizes. What I usually do is to use the 1 inch : 1 cm scale. Just say your banner size is 120 inch x 48 inch, just do it in 120cm x 48cm.