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Online Instruction >>SOFTWARE >> photoshop instructions

Photoshop Instructions

1. SAVE. Either let the scanning software open your image directly into Photoshop or open Photoshop first and open an image file. Click on File, then Save As..., then name it properly as a jpeg file, eg. ManetOlympia.jpeg, search the pulldown menu for Jpeg, and click Save.

For the Jpeg box that appears, Image Options can be changed to make your web images faster to load. Move the slider bar to High quality (8) rather than Best or Maximum. This is usually fine and hopefuly will make the image 50k or less for loading on a slow 28.8Kbps modem.

If the image is another type of file or mode, while in Photoshop, try clicking on Image, then Mode, then RBG and then save it as a jpeg file.

2. PROBLEMS. Note: UNDO. Remeber, if you made a change you don't like, Photoshop has one Undo. Click on File and then Undo.

If that doesn't work, you'll have to start over from the last saved image file. Close down the file you are working on and made a mistake on, without saving it. Reopen the same file.

Another option, which does the same thing, is to click on File and then Revert.

 

Correct an Image

1. ROTATE. Click on Image and then Rotate Canvas and then Arbitrary. For the Angle, a 1 or 2 is enough for a gentle nudge rotation.

2. CROP. Click on the crop tool in the tool sidebar. If the toolbar is closed, click on Window, Show Toolbar. The crop tool looks like a measuring instrument and is located with the Selection Tools on newer versions of the program. You can just click the letter C, for a shortcut to this tool.

Position the cursor in the upper left hand corner of the image, starting where you want to crop. Drag down and to the right, a box that included all of the image you want to save as your thumbnail. Double-click in the center of the selection to crop.

2. LEVELS. Click on Image, then Adjust, then Levels. Position the left and right triangles, under the Input Level graph, so that they are directly under the outer edges of the black vertical lines of the graph. Slide the center triangle left to lighten and right to darken.

3. BRIGHTNESS. Click on Image, then Adjust, then Brightness/Contrast. Slide the triangles right or left until the image looks better.

4. COLOR BALANCE. Click on Image, then Adjust, then Color Balance... Decide whether there is too much or too little of any given color. Slide the triangles right or left until the image looks better.

5. IMAGE SIZE. Click on Image, then Image Size... 

  • ·      Resolution is 72 pixels per inch for a web-based image.
  • ·      Check Document size to see if that size is the right one for your webpage. You can't make it larger without making it extremely pixelated, only smaller. If you need a larger image, you will have to rescan your image at a larger resolution and then cut it down.
  • ·      Constrain Proportions is checked on
  • ·      Click OK

6. SHARPEN. Particularly if your image was reduced in size, it will need to be sharpened. Click on Filter, then Sharpen, then one of the following choices. Unsharpen Mask is the weakest change, so do this one first. Next in strength is Sharpen Edges. If you need something stronger, try Sharpen. Sharpen More will make the most changes.

7. Click on File, then Save.

Now your image file is ready to be included (usually by an Insert command) in a Word document, or an HTML webpage, or in WebCT, or sent in email!