Help please!

I recently did some pictures for a local radio station and gave them a disc with four images on them the file sizes were from about 850kb to about 2.5 mb they sent me an e mail saying that they were not going to work because they need at least 72dpi and mine were only coming out at 24 dpi ok I'm completely lost at what this means what do I need to do I've printed pictures many times in the past and have never ran across this any help with this would be so appreciated thank you.
Alan

Amarinelli wrote in post #10805176
I recently did some pictures for a local radio station and gave them a disc with four images on them the file sizes were from about 850kb to about 2.5 mb they sent me an e mail saying that they were not going to work because they need at least 72dpi and mine were only coming out at 24 dpi ok I'm completely lost at what this means what do I need to do I've printed pictures many times in the past and have never ran across this any help with this would be so appreciated thank you.
Alan

Good question.... dpi = dots per inch

So if you have say 144 pixels on one side, 72dpi will give you 2 inch in print, 24dpi gives you 6 inches in printing.

However - dpi is pretty much meaningless - my guess is your images are downsized and they are too small to print at the size they'd like.

Email them back and ask whta they want in resolution or what size they want to print - because that statement like this is well - not very helpful.

They are morons

dpi refers to dots per inch on a printer.
ppi refers to pixels per inch when 'telling' a printer what size to print an image

What counts however, is the actual image size in pixels.

You can have an image 1ppi or 1000ppi and it will still be the same.
There is a 'sticky' somewhere on this whole ppi/dpi fiasco.

EDIT: I think THIS is the sticky I was referring to

Amarinelli wrote in post #10805176
I'm completely lost at what this means

As are they apparently

It's the number of pixels that counts. ppi is irrelevant.

http://www.getcolorman​aged.com/general/intro​duction/ppi/

If they can't tell you what pixel dimensions they need, ask them at what size are they planning to print the photos. Print size in inches multiplied by ppi will give you the number of pixels. However, 72 ppi would be way too low for any printed medium. Give them 200 - 300 ppi.

I'll say again: It's the number of pixels that counts. ppi is irrelevant.

I'd not give them a 2000x3000 pixel file at 1ppi, but if I did, it wouldn't make a lick of difference: It would print just as well at A4 as a 2000x3000 pixel image at 10000ppi.

Maybe they were trying to lay them out for a certain size and their layout program showed the small ppi for the size print they were aiming at. If that is the case, and they were trying to make say a 24x36 print out of say a 600x800 pixel image then they would definitely see a very small ppi in a print layout program.

So, if you find out that they are trying to make large prints from files that have been resized for, say Web viewing then, of course the ppi in a layout program will be way to small. You will want to know the size they are trying to print, and then if possible give them an image with enough pixels to print at a decent size.