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Hi there. In this video,

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we're going to look at what image resolution is, or DPI,

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or PPI, effective PPI,

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basically it comes down to the quality of your images.

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Let's go and do that.

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Image resolution might have come up in your world before and you might be like,

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"I can understand it, maybe I don't."

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Maybe you've never heard of it.

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Let's have a quick little look at what it is.

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Resolution is basically the quality of an image.

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I'm going to click on this background image here and I'm going to go to my "Links panel."

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If you can't see Links, go to "Window" and down to "Links."

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What we're going to do is,

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you might be able to see it already,

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but I don't have mine activated.

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See this little area here says "Show/Hide Link Information."

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I'm going to make mine go up a little bit higher just so

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I can see a bit more of this link information.

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You can do it little down, you can make it

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bigger and it just gives you information about the image.

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There's the name, it's a JPEG,

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it's on page one, it's RGB.

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What we're really looking for is the major one,

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it's the effective PPI.

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PPI is an acronym for pixels per inch.

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If you've ever heard of DPI or dots per inch,

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it's exactly the same thing,

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just a new way of explaining it,

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pixels instead of dots.

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We've got targets to hit.

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The effective PPI maximum should be

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about 300 and that's going to give you amazingly beautiful,

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crisp, clear image when we print it and the lowest that we can go is variable.

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It comes down to what its purposes.

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If this is going to be printed commercially through

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an offset printer and then put out in our display case,

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at our showroom, then we want it to be as close to 300 or above.

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You can have 1200 and that's fine.

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There's nothing wrong with that. Above is good.

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Below is when it starts getting into the gray area.

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So 300 is the target.

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It's totally just a made-up number that looks really good.

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Some people use it like some "carved-in-stone-can-never-be-changed" number, but really,

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if you're close to 300 like this one here,

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this is 291, I would not care.

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There's probably prepress people that do that might be going a red color now.

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But if we're all honest,

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we've all printed stuff below quality and nobody has noticed the difference.

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It's how low can you go.

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What really happens is,

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it's depending on how big you've stretched this image.

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This image is, you can see it's actual PPI is 300,

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so whether it's 300 DPI image or PPI image,

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but I had to stretch a little bit bigger to cover the bleed,

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so I just made it just a teensy bit bigger.

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It reached over this blade here.

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Let's look at an example that won't work.

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I'm going to delete this guy in the background temporarily.

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I'm going to go to "File" "Place."

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I've got an example in O3 newsletter,

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grab that one and let's go to "Image resolution" example.

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I'm going to bring it through and I'm going to bring it in,

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I just click it once and that has come in.

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It says it is 72, which is going to commercial printer.

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It's not going to work,

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so it needs to be at least 300,

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but it looks okay on screen.

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If you were going out to a screen,

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as in it's going to be emailed or downloadable from your website,

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72 is just a fine old size.

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I'd like it to be a little bit higher,

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but the minimum is 72 to look okay on most screens.

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On a retina screen like this MacBook Pro that I've got in front of me,

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it'll look a little bit pants,

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but I've got to stop using the word pants.

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It's UK slang for bad,

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that pants, not bad anyway.

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Anyway, back to resolution.

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It is 72 dots per inch or PPI, pixels per inch.

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It's going to work for screen,

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but it's not going to wait for print,

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but let's just make it bigger.

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I want to use it for the whole cover, so I'm going to make it quite big.

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I'm going to make it nice and big so it covers the bleed,

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I'm going to trim it up there and it's looking okay.

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It looks fine on my screen now,

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it might look okay on your video,

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but it will print really badly.

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You can see if I select on the effective PPI is 300 now,

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why is it changing?

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It's because I'm scaling it out.

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Watch they effective PPI as I keep scaling it up,

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scale it up, they go, it's 28.

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It's stretching those little pixels because if we zoom right in,

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it's actually made up of little squares.

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That's what resolution is,

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or pixels per inch.

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This is a pixel and how many pixels are in an inch at the moment is only 28 in that inch.

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You need a lot more dense pixels for this to work.

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Zoom out and you can start to see,

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now it's looking a little bit ready around the outside, pants even.

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The main thing to look at is,

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don't worry about the quality of the image that came in first,

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back in the days of your,

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you had to make sure everything was 300 PPI before it came in.

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What you can do now is you just looking at effective PPI,

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ignore this number here, what it is here.

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If this is going out to commercial print,

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this is so far from 300 that it's not going to work at all.

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Now, what are the boundaries?

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Say I do want to use this commercially,

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I'm going to scale it down.

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You can see 78 is still too little.

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If I want to use this in commercial print and I want to use it at 300 dpi,

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you can see I'm getting there, 138,

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might move this across so you can see it closer.

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Getting smaller, 227, 312. Close to it.

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That now is the right resolution to be printed.

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Unfortunately, it's teeny-tiny.

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Okay, so if you're downloading images from the Internet,

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you just got to make sure they're really big so you can lease when you scale them down,

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you get close to 300.

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How low can you go?

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Now, this is total personal preference.

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Now, the rule is 300.

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But I know if it's a good quality image from a stock library site,

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you can get down to about 180,

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150 if you're really sneaky and it will print fine.

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I probably wouldn't do this for the front cover

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because it's such an important part of this document.

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But say it's an image that's on Page 2 and it's

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just a small image and the resolution is about 180,

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nobody will notice. Again, it really depends.

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If you're trying to sell Bentley and you've got

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some low-quality images that are just slightly off,

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I'd be looking for 300 and above for resolution.

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But in the general day-to-day world,

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180 works just fine for me.

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To recap, if you're working on screens,

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that means it's going out via digital means.

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It's going to be emailed or via downloaded from our website,

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72 is the minimum.

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A lot different because screens deal with

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resolution a whole lot better than when it's printed physically.

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If that's the case, I can have this all the way up at 54, not quite there,

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but we're getting close,

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59, come on, Dan, you can do it.

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71, 72, that is fine if is it's physical size,

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that's going to be a digital download.

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In summary, just make sure your effective PPI is between 72 and 300,

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depending on its purpose.