Changing DPI in PS

[regla]

Hi,
I need to change a picture into 800x600 and 72 dpi.
Im using photoshop 7.0
I choose Image -> Image size
changing to 800x600 is fair enough, but how do i change the dpi?
i can only change ppi it seems, is this the same, or??
It is very important that the picture is 72 dpi, its for
an application to a school, and they won't even look at it
unless its 72 dpi (or so they say).

I hope someone can help me out on this, fast
thanks

 

[MarcusStringer]

It's the same...

Pixels per inch (new school)

Dots per inch (old school) everything is printed with dots.
have a look at a magazine

Marcus

http://www.midlandtypesetters.com.au

 

[dimoj]

It's not really the same thing but I'm sure what they mean is actually ppi.

Sounds like you are making a jpg right? If so you don't even need to change the ppi in Image Size. Once you have it at 800 x 600 then do a Save for Web and it will make it 72ppi.

 

[regla]

thank you very much for such a quick response
btw, 72 ppi/dpi, is that kinda low quality? sounds like it
read somewhere that monitors only show 72-96 ppi/dpi, higher numbers are only shown when printing/scanning. is that right?

thanks

 

[jmgalvin]

Yes, monitors work at 72 dpi. Text printing is best at 600 dpi or above. Photo printing is usually done at 300 dpi (as in from printing presses - not your own printer).

Anything above 72 dpi is worthless if it's only going to be viewed on a monitor, as the monitor will not be able to recognize the increased resolution.