What is Rasterize in Photoshop? Difference Between Raster, Vector, and Smart Objects

today we're going to be talking about what the heck is a rasterized but before we dive into any of that I got a little question for you is every digital image that you see made up of pixels you've got five seconds to make up your mind so without any further ado let's get started [Music] okay times up what I want so you're having your mind by the end of the video you'll know whether you're winner or a winner because even if you're wrong you have to be wrong to be right sometimes in order to learn okay so let's do a little experiment in this experiment I have three objects now these three objects represent three different kinds of graphics that we see in Photoshop that is raster vector and smart object now I have made separate layers for them this one is raster this one is literally vector and this one is literally smart object and have a look at the symbols at the corner of the logo the smart object has this kind of symbol vector has this kind of square with anchor points around the corners and raster does not have any symbol now let's begin the X tournament now watch the experiment okay let's go ahead and select the raster object and let's make it bigger controller command T and let's try making it bigger really really huge just like that and if you press ENTER have a look if i zoom in you see what the pixels right this is pixelated right so let's go ahead let's go back and now let's do the same with vector okay let's select the vector and let's make it bigger controller command T make it huge but when you show the edges the edges are really really smooth it doesn't pixelate no it doesn't so let's go ahead and get back and let's do smart object by the way if you're wondering why is it red while it and silver it's for you to understand our for raster R for red V for violet V for vector s for Silva F for smart objects so just keep that in mind just little thing to keep you focused now let's do that with the smart object now if I do that with the smart object by trying to make it bigger to enter and if I show the edges like that it's kind of not that sharp as it's also showing pixels but it's kind of better okay so let's go ahead and zoom out now let's do another experiment this time let's choose the raster let's make it smaller and if I go ahead and make it like really really small just like that okay I made it really small now let's make it big again controller command T and if I make it big again have a look what the heck have you made of it it's totally pixelated totally gone okay let's get back let's do the same this vector K controller command T and let's make it smaller and let's make it bigger no effect this guy is really flexible okay now let's do that with the smart object if I make it smaller then again I make it bigger like really really big it's showing pixels if I go ahead and if I try making it really really huge and it's still showing pixels but it didn't lose pixels like the raster image so what do we conclude from this if you look at raster graphic you made it smaller we made it bigger it got pixelated which says that raster graphics is made up of pixels okay done if you make it bigger you can see the pixels if you make it smaller now here's what's interesting if you make it smaller just like this hit enter what happens is the number of pixels also go down and they fit into the pixels of the canvas now what do I mean by the pixels of the canvas here's what I mean if I go ahead and make a say gray object I'll just show you what happens if i zoom in pretty tight you see the pixels these are the pixels of the canvas now if you make it smaller it fits itself into the pixels of the canvas okay so the number of pixels decreases therefore when you make it big again it just kind of looks and doesn't look right okay so I've made it smaller right now as I go ahead and choose the raster I've made it smaller I have made it more smaller see how it's fitting to the pixels of the canvas now if I hit enter it's looking like this if I go ahead and make it bigger it will still look the same just like that you'll still look the same have a look so all in all raster images are made up of pixels now let's go back let's understand vector now vector images vector graphics are formed by mathematical formulas and since they are formed by mathematical formulas no matter how much you zoom in how much you pinch in it never gets pixelated now what kind of mathematical formulas you ask let me show you a very easy example do these things are really really complex and we don't want to get into math but let us understand this for a second okay so if I just go ahead and turn everything off and let's draw a straight line a vector straight line and a 45 degrees just like that now what would be the formula for this one very simple let's go ahead create a new layer let me just show you this line let's add some stroke off say black so that we can see it black there we go okay now what's the formula for this the formula for this is really simple is X let's make it a little bigger and choose the color x equals y and that's the formula for this line now what is why why is this coordinate what is X X is this coordinate the horizontal coordinate is 2x the vertical coordinate is the Y which means if X is 1 Y is also 1 so if we make markers here just like that just like this okay if the value of x is 1 then Y is also 1 and they both meet here if the value of x is 2 y is also 2 they both meet you and if you join this we'll be this line and these are the kind of mathematical formulas which make up vector objects but what about smart objects it's a little confusing isn't it see if you make it smaller if I go ahead to the smart object if I make it smaller and if I make it bigger again it doesn't lose pixels but if I make it very big it shows up pixels so it's kind of confusing but here's what it is a smart object stores pixel information think of it like this suppose you have an object of say hundred pixels okay just a rectangle of 100 pixels you made it smaller okay you made it as small as say 10 pixels now if it's a smart object it will store the 90 pixels in its pocket it will just use the 10 pixels once you make it bigger it will use all of its 100 pixels take it out of the pocket all of its 100 pixels if you make it that thick now a raster image once you make it smaller say there was a hundred pixel rectangle once you make it smaller to say 10 pixels the rest 90 pixels will be deleted if that's a raster graphic but if it's a vector graphic it will store it and we'll use the pixels accordingly if you make it like say 40 pixels it will use the 40 and store 60 just like that it bills still have all of it so if it's a like a 20 megapixel image it's a smart object and you're adjusting it to your canvass of say which is a 1080p canvas you adjusted it to 1080p canvas it still has all the details of a 20 megapixel image so that's how it works it does not have a definite amount of pixels so the smart object determines the amount of pixels according to the size in which you keep it in so you make it small it decreases the number of pixels you make it baekje it increases the number of pixel it will only be in its ideal pixel number when it's just being imported or just converted into a smart or it is at just that size just in its original size so let's move on to another experiment suppose these circular objects I want to rub out a certain area just like that and I want to make it look like pac-man have you played pac-man game no it's very interesting okay so let's take the eraser and try raising certain area just like that carving out just like an eye here and maybe make something like this okay by the way if you want to make a straight line with any kind of brush erase or something just click once press and hold the shift key and click at the other point at the other end point and it makes a straight line from A to B just like that so let's go ahead and erase it just like this yep it looks like pac-man now let's try it with the other ones okay let's try it with the vector one it just doesn't happen it shows you the error the shape layer must be rasterized now I'll come to that that's what the video is all about let's go ahead and cancel that let's try it with the smart object it just doesn't happen this Martinson wants to you guys drives he'll get into that cancer now here's the conclusion of this one while you use the eraser - now let's come back - rasterize the eraser to the size of the eraser - is measured by what pixels right if you make the eraser - bigger it shows you diameter have a look diameter 3 1 8 486 px what is px pixels if you make the brush bigger smaller hardness something like that or whatever the hardness is there is this pixel factor here now if you want to delete a well-defined amount of pixel from this from a raster photo it's easy because a raster image has a well-defined number of pixel if it's hundreds hundred there's no hiding but here's the thing vector images are not made up of pixels so if you say okay delete hundred pixels from this Photoshop gets confused man I'm not made of pixels how come I don't have pixels how can you delete hundred pixels from me so that's out of the equation now let's come to smart object now smart object says that even though he has pixels it doesn't have a well-defined number of pixels if you make it bigger it will use more if you make it smaller it will use less it kind of has something which is hidden so if you erase a definite amount of pixel from it if you try to do that Photoshop gets confused again and ask you to convert this into a raster graphic and the process of conversion isn't it it's very carefully and the process of conversion of a smart object or a Wecht err graphic to raster is called rasterize so whenever you're doing something like painting on it for example you want to brush hair on it so if you go to raster if you take a brush if you paint hair here just like that you can easily do that because the pixels are well-defined but if you want to do that in vector you have to convert this to a raster and the process called rasterize it shows you the warning rasterize the shape okay so this is one way to rasterize it it shows you the warning and then you can click OK it rasterizes and evening in easily do whatever you want but once you rasterize it it loses all the qualities of vector now if you make it big and make it small and make it do all that if you're kind of loose pixels right so keep in mind that when you rasterize you lose all the other qualities so that's kind of a trade off here now same the smart object try to do anything it will show you the error click OK it will convert it into a raster graphic now the other way of converting this into the raster graphic is right-clicking on it and going to rasterize layer' the tree time and again do in photoshop ok so click on it it will do the same thing oops I click somewhere else rasterize layer' and the symbols will go they have a look at the symbol symbol goes away and now I can do anything you want now pretty much answers why do you need to rasterize now the question arises when do we need to rasterize it even if we are doing something applying something which is defined by a fixed number of pixels then you need to ask price now some of you might ask well I can apply say Gaussian blur to a smart object well yes you can apply Gaussian blur to a smart or to purchase an interesting thing I applied Gaussian blur of say seven and the edges are pretty blurred right say ten edges are blurred click OK right now this is a smart object if I make it bigger okay if I make it bigger hit Enter see the edges the edges are less blurred now Gaussian blur stays the same the effect of the Gaussian blur does not increase the pixel size does not increase off the filter but if this was not a smart object so if if I rasterize it and then I apply blur Gaussian blur same ten pixels is giving the same effect but this time if I make it bigger have a look the blur also increases with the size the effect kind of burns into the photo you see that's the difference so more confusion when do you need to rasterize simple answer whenever you see the warning message then you need to rasterize hope that answers your question also you can rasterize text which is also very interesting so suppose you wrote something say the letter T and you want to make it kind of Jaggi kind of shape e and you want to make a logo out of it you cannot do that right now so suppose you want to just go ahead and delete an edge just like this you try to do it if we press Delete it won't do it you need to rasterize the type so right click on it and select rasterize type now you can do whatever you want you can morph it you can do whatever you want with it go ahead delete at you a certain parts filters whatever so that's pretty much all right about rasterize just remember one thing the process of conversion next return hot objects anything the raster graphic is called I hope this video helped you like the bid make sure together but I can also don't you subscribe click the bell body that you my friend don't miss anything I'll see you guys on ice until then stay tuned and make sure that you keep free [Music]

Channel: PiXimperfect

Views: 177,474

Keywords: what is rasterize in photoshop, difference between raster and vector, what is smart object in photoshop, smart object photoshop, vector photoshop, shapes photoshop, photoshop tutorials for beginners, piximperfect

Id: aOz6prOzrxs

Length: 16min 8sec (968 seconds)

Published: Thu Jun 22 2017