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Most of the time when you're working in Photoshop, you'll be opening existing files. Once in a while you want to create a new file from scratch. You might want to do that for example, if you are creating a graphic for the web or perhaps you are making a collage and you want a big blank file into which you can drag lots of small photographs. To create a blank file from scratch, go to the File menu at the top of the screen, and choose New. In the New dialog box, you can name your file or you can wait until you save the file to name it. You can type a custom Width, Height and Resolution in these fields, or you can choose a preset from this menu, like for example U.S. Paper, and that fills in these fields for you.
Double-check that the Units of Measurement is set to what you want, either inches or pixels, or in a rare case one of these other choices. And that the Resolution is the resolution that you need for your particular brand of output. If you are going to be outputting to a desktop inkjet printer then 300 is an acceptable choice. If you are creating a file for the web then I suggest you do this. Change the Units of Measurement to pixels here, type in the exact number of pixels you want, and then it doesn't matter what is here in the Resolution field, because in this dialog box Resolution just means the number of pixels in a file that will be assigned to each inch as you see here, if and when the file is printed.
I am going to put these Units of Measurement back to inches and continue on to select the Color Mode. In most cases I suggest that you do choose RGB Color, which stands for Red, Green and Blue Color Mode. That's true even if you are creating a file that's going to have black and white content, because an RGB Color file has three channels of information as opposed to a Grayscale file, which has only one channel. Another choice here is CMYK Color. If you are preparing a file for professional printing, ultimately it may have to be converted to CMYK.
But I suggest that if you are creating a color file even for commercial printing, you start in RGB Color Mode so that you have access to all of Photoshop's editing features. And then you can convert your file at the end of the process. Next you can choose the bit depth for your file. The bit depth determines the amount of color data in each pixel of the file. Your basic choices are 8 bit or 16 bit. In most cases I suggest you use 8 bit when you are creating a file from scratch. Although 16 bit will give you lots more color information, you usually won't see much of a difference particularly if you are making a graphic type of file.
And your file will be much bigger in 16 bit than it is in 8 bit. Your next choice is what color of the background of the file will be. You can choose white or whatever color is in the background color box in the toolbox or transparent. Transparent generally comes into play only if you are creating a graphic for the web. And no matter what choice you make here, you can always change the background of your file. So I wouldn't worry about this too much. You may find this Advanced area of the dialog box closed like this. If it is, be sure to click this arrow so you can double-check which color profile is going to be associated with this particular file.
And you can make that choice from this menu, or just accept the Working RGB color profile. You can learn more about color profiles in the earlier movie on color settings. This last field is only relevant if you are creating an image for a video. So when you are all done going through those fields, you'll just click OK, and you'll have your blank file and you can start creating in Photoshop.
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