Resizing

Now that we understand a few basic concepts, let's see how to put them in play.…I am working inside a file called Canyonlands.jpg, found inside the…exercise files folder.…Whether you want to change the Size or Resolution of an image, you go up to the…Image menu and you choose the Image Size command.…This may be the single most important command in all of Photoshop.…Notice that it's divided into a couple of areas upfront here.…Pixel Dimensions represents Image Size.…So we start off by seeing this value, 36.4M, that shows you how big the image is in memory.…

If you take that number and divide it by 3, you get the megapixels.…So 36 divided by 3 gives you a 12-megapixel image.…It measures 4368 pixels wide by 2912 pixels tall, that's why I have to be so…very zoomed out from the image, I'm looking at the image at the 21% zoom ratio…in order to take in the entire image on screen.…The Document Size information tells you how big the image will print.…In this case it will be 18 inches wide by 12 inches tall at a Resolution of 240 pixels/inch.…