PPI and DPI mean the same thing.
Actually, I feel that dots are round things and pixels are square things so....I prefer PPI but I'm not making the rules and DPI is what's used mostly
DPI on its own means nothing without the physical size of the image.
What we really need to know is the pixel dimension of the image.
In other words we need to use the primary-school-simple formula:
Size(Inches) X DPI (Or PPI) = pixel dimensions.
This is useful information. Nothing else is of much value.
To send commercial images for preview by email. you can size them to:
Around 1000 pixels for the longest dimension
72 DPI resolution
Medium JPEG compression
If you want to speed up the process, you should “Save for web” in Photoshop.
FILE>SAVE FOR WEB
In the top little presets window choose “JPEG HIGH” (There’s a choice between Low, medium and high)
You really don’t need to fiddle with any other settings.
Computer monitors bought in the last 20 years or used by people dealing with images will not have a lower resolution than that.
So that will give you nice, screen-filling image suitable for previewing by any client.
(It will also make a decent ¼ page print for editorial)
High quality magazine covers are actually printed at a resolution of around 240 DPI (But they always ask for 300)
Newspapers are printed at around 100-150 DPI
You can get a very nice 8X10 print of the kids from the corner lab with a file about 1200 by 1500 pixels
(8” X 10” @ 150 DPI)
(There’s something called the “Q” factor which says that you must work with a file 1.6 X bigger than the required final size)
I Think it should be called the OCD factor or the paranoia factor. I have not seen any evidence to support this idea.
The first thing the publishing guys do to your 300DPI image is resize it to fit into the space allotted. Thereby effectively reducing the resolution.
It's a funny world out there in pixel land.
Head of the Department of Photography,
Muscat
Sultanate of Oman
From: lea murphy <lea@xxxxxxxxxxxxxxxxx>
To: List for Photo/Imaging Educators - Professionals - Students <photoforum@xxxxxxxxxxxxxxxxxxxxxx>
Sent: Tuesday, December 5, 2006 6:20:56 AM
Subject: Re: Image cathedral at Les Baux
I'm still confused.
Jeff:: On Dec 4, 2006, at 8:27 AM, Jeff Spirer wrote::: > It is completely unnecessary to set any image to 72dpi or 96dpi.Lea asks: Download time?:This remains unnafected as the image is the same size.1000x2000 pixel image set to 72 dpi = 2Mb1000x2000 pixel image set to 1000 dpi = 2MbImage size in browser on 20" monitor,screen set to 100dpi for 72 dpi image = 10"Image size in browser on 20" monitor,screen set to 100dpi for 1000 dpi image = 10"EXCEPT is someone has coded in the 'Imagesize' into the html in which caseit could be any size whatsoever, a 20x50 pixel image could be written todisplay as 5 pixels wide, 100 or even 10,000 - and look awful ;)karl
Any questions? Get answers on any topic at Yahoo! Answers. Try it now.
