What dpi do you use?

stabo

What do people around here use for pix.ie or flickr? Also would you use a different dpi if you were getting a print done?

soccerc

stabo wrote: »

What do people around here use for pix.ie or flickr? Also would you use a different dpi if you were getting a print done?

70dpi for web, 300dpi for prints

stcstc

DPI is not for screen stuff, ie web

and when your sending a file to a printer DPI is not thr right thing either

its PPI, Pixels per Inch

DPI, dots per inch is a measurement of how many dots thr printer uses

so for screen, web etc you need 96 PPI, but most software will work out the right size anyway. BUT to make it right use 96

for printing, it depends on the printer

for example my epson large format printer uses a native res of 360 dpi, so if you produce an image at 360 PPI then i would print at 1440 DPI which happens to be 4 times the native res. ie the printer is not trying to recalulate the dots on the fly from the imge coiming in.


HP and canon i belive use a native res of 300 so use 300 PPI for stuff your having printed on one of theese

most digital mini labs use 300 too

hope this helps

stabo

Chreers for that info stcstc.

stcstc

no problem

I am aiming to write a few tutorials about this stuff

to try and make it easy for people to understand

oshead

That would be handy. Just a quick question while you're there. Is 1440 DPI photo quality and 2880 DPI Best photo on the Epson R2400? I've tried both and couldn't see much difference, if any at all.

Edit: Just found out on google. The answer it seems is yes.

eas

stcstc wrote: »

so for screen, web etc you need 96 PPI, but most software will work out the right size anyway. BUT to make it right use 96

hi Steve,

I've seen you mention this 96 ppi bit before and I'm curious. From way back in design school 72ppi was always the accepted standard and infact photoshop cs4 still down samples to 72ppi as default when optimizing higher resolution material for web/screen.

basically, why and when did 96ppi come along?

challengemaster

I uhm...haven't the foggiest. Whatever the hell LR / CS4 is set to

stcstc

the only thing i use 2880 for is when i am printing on some aluminium sheets i have

as for the 96 ppi

if you on a windows machine go to display properties and you will find in one of the tabs the 96ppi figure


i cant remember when it changed cos i grew up with 72, but it has been 96 for a little while

Cameraman

http://blogs.dummies.com/photography/2008/12/19/of-pixels-ppi-and-internet-myths/

Print is a different kettle of fish altogether.

eas

Cameraman wrote: »

http://blogs.dummies.com/photography/2008/12/19/of-pixels-ppi-and-internet-myths/

well, I'll be.

I tested the theory - ppi makes absolutely no difference, not even in the amount of data in the file. Amazing.

http://www.savo.ie/misc/restest/



.

Cameraman

eas wrote: »

well, I'll be.

I tested the theory - ppi makes absolutely no difference, not even in the amount of data in the file. Amazing.

http://www.savo.ie/misc/restest/

.

Exactly.

A pixel on a screen is just that - a pixel. Changing some value in a file (i.e. image) is not going to change that. The only thing that matters is the actual pixel dimensions of your image e.g. 800 x 571.

DaireQuinlan

Cameraman wrote: »

Exactly.

A pixel on a screen is just that - a pixel. Changing some value in a file (i.e. image) is not going to change that. The only thing that matters is the actual pixel dimensions of your image e.g. 800 x 571.

I think photoshop adds to the confusion a lot of people seem to have about this. By default it resamples the file if you change the DPI. I've always reckoned this gave some sort of impression that the DPI actually had something to do with the size or resolution or whatever it is that people are mixing up nowadays.