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Photoshop is the world’s most powerful image editor, and it’s arguably the most complex, as well. Fortunately, nobody knows the program like award-winning book and video author Deke McClelland. Join Deke as he explores such indispensable Photoshop features as resolution, cropping, color correction, retouching, and layers. Gain expertise with real-world projects that make sense. Exercise files accompany the course.
Download Deke's free dekeKeys and color settings from the Exercise Files tab.
In this exercise, I'm going to show you how to open a problem image. That is, an image that doesn't want to open inside of Photoshop. So I'll go to the File menu, choose the Open command, Ctrl+O, Cmd+O on the Mac. Navigate my way to the Felix Mizioznikov folder, found inside the 03_open_org folder. Notice this image right there, Two young women.jpg. I'll click on it. It looks great. It's got a beautiful thumbnail. I could see a larger version of the thumbnail down here at the bottom of the dialog box. If I hover over it, it tells me it's a JPEG file.
I can even get a larger version of the thumbnail here on the PC by going up to the View menu and choosing Extra large icons. And then I could scroll my way down, and the image is looking great. Awesome! I want to open that image. I've got All Formats selected here on a PC. So I can get to the JPEG image. Everything is going great. I click on the Open button, and I get this error message, which says Could not complete your request because an unknown or invalid JPEG marker type is found. What the heck does that even mean? I have no idea what a JPEG marker type is, valid or invalid, known or unknown.
It doesn't darn any sense to me. And the only thing I can do is click on the OK button. So this is an absolute exercise in frustration. What is wrong with this file? Well, there's one of two problems. One, it's corrupted. And if you have got a corrupt file, you have to get a new copy of it. So corrupt files are not common, but they do happen every once in a while, when you are downloading an image from an FTP, or when you're getting an image via e-mail, or from a Web site, or something along those lines where the file didn't upload all the way.
Just maybe a byte of data didn't go with the file, and that can ruin the entire image, quite frankly. The solution is to get a new copy of the image from whoever sent it to you in the first place. But what if it's your image? What if you created it inside of Photoshop some other time, saved it off, everything was A-okay, now you're tying to open it again? Well, what might have happened, this is the second thing that can go wrong, is you gave it the wrong extension. It's actually a TIFF file or a PSD image and somehow, it got a JPG extension.
So Photoshop thinks it's a JPEG image. You click OK. If that's the problem and, of course, you don't know, you're just going to have to speculate. You click OK, go up to the File menu, and if you are working on the Mac, go to the Open command. If you're working on the PC, you drop down here to Open As. So I'll show you the PC way, because it's a little harder to figure out. Go to the Open As command here and then select your file. So go ahead and scroll your way down, click on Two young women.jpg. And then, change Open As to the file format you think you might have used.
Now, there is no way that's you are going to get any help from Photoshop in this department. It's telling you it's a JPEG image. That's what it thinks. That's why it thinks it has an unknown or invalid JPEG marker type, the whole number. It doesn't know what it is either. You are just going to have to make some guesses. You can do that by clicking on the Open As option here. This is the way you'd work on a Mac too. You're inside the Open dialog box. You Mac people, you would choose the format here. You would just try something.
For example, you could try .PSD and see if it works. You'll get another error message, because that not the right format. The right format in this case is TIFF. So go ahead and choose the TIFF format. Even though it's a JPEG image or so it says. It thinks it's a JPEG image. The file has a kind of identity problem. It's actually a TIFF image. So click Open. Now, lo and behold, it opens just fine. Now, what you would do, of course, is you would go the File menu, you would choose Save As, and you would make sure to give it a TIFF extension, .tif, which will happen by default, incidentally.
And then you click Save, save off the image, and you're good to go. Anyway, I am going to cancel out. This is supposed to be a problem file for purposes of our exercise. Notice, however, that it opens in an independent floating image window. I don't want that. I need to go back to Preferences, press Ctrl+K, Cmd+K on the Mac, switch to Interface, and then turn on Open Documents as Tabs so that I open my images inside of the tabbed window interface in the future. Click OK. All right. I'm done with this image. So I'll click the Close box in order to close it, not save my changes.
And that is how you open improperly identified images here inside Photoshop.
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