Adobe Photoshop - University of Idaho



Adobe Photoshop

The images we will use for today’s are on the class website. Open each of the photo files and save in one of your folders.

Repairing a photograph:

1. Open Photoshop. Once the program has launched, open “blue winged teal 2” in Photoshop.

2. Double click on “background” on the layers tool bar. Rename the layer “blue winged teal” to unlock the layer.

3. Click on the “spot healing brush tool” then click on the blue water. Now you’ve selected the fix for the brown floaties in the water. Place the brush tool over the spots to remove them. (Note that you can change the brush size on the menu.)

4. Save this image as a jpeg (NOTE: the default format to save in Photoshop is not jpeg).

Using the Clone stamp in Photoshop:

1. Open an image that has some complexity

2. click on the clone stamp tool to activate it

3. Alt-Click to identify source material that you want to clone.

4. Click somewhere else in the image and use the tool to “paint” the cloned material.

Selecting a portion of an image:

1. Click on the “quick selection tool” in your toolbox.

2. Starting with the head, click and drag to select the entire bird without the water. I like to do somewhat small areas. You’ll need to do this with a series of clicks and drags. When you begin a new “click” start near an existing border.

3. If there are areas that you want to de-select, simply hold “alt” and click into the area you want to de-select.

4. To add more precision to your selections zoom in (crtl +) and decrease the size of your brush.

5. Crtl – to zoom back out of your image.

6. Click on “refine edge” then select “on black” in order to get a clear look at your selection.

7. You can adjust radius, contrast, smooth, feather, or contract expand to make the edges of the images softer or harder. Click “ok” when you have finished.

8. Click the “add layer mask” in your layers toolbox. Now the water has been removed. You can also “select-inverse” and delete the unwanted pixels.

9. Save this image as a jpeg with a different name than your previous image.

Copying a portion of an image, copying, and grouping layers

1. Open “Canadian thistle flower 1” in Photoshop.

2. Use the “quick selection tool” to select the flower. Zoom and adjust brush sizes to ensure a precise selection. Save this as “Canadian thistle repaired”

3. Go to “edit” and select “copy”.

4. Paste 4 copies of the flower into the image. Note that each paste creates a new layer.

5. Individually arrange your images. Use Edit-Transform to change the shapes of each flower.

6. To group the images into one layer, click on “create a new group” in the layer tool bar. Click and drag each of the flower layers into the folder. Once you have done this, the group of flower can be maneuvered as a single group.

7. Save this as “Canadian thistle patch”

Using Layers:

1. Open “wetland post mow 3” in Photoshop.

2. Double click on “background” on the layers tool bar and rename the file “post mow”.

3. Select the eraser tool and go over a portion of the image. You are erasing to a transparent background.

4. Go to “edit” “undo eraser” to go back to the original image.

5. Move the cropped blue winged teal into the image by selecting the move tool, then hold the mouse over the image and dragging it to the image of the wetland. If you hold “shift” while you move the image, it will center the image. Notice the new layer in the layers box.

6. Move postmow to the top position. This will place the wetland image on top of the blue winged teal image.

7. Select the eraser tool again, and go over the area which is on top of the blue winged teal. Notice that you only erase the top image and reveal the image below.

8. If you erase an area that you didn’t intend to, hold the “alt” key and go over the area again with the eraser to regenerate it.

Effects:

1. Photoshop has many effects similar to Illustrator. You can convert a photograph into a more “artistic” image.

2. Using an image of your choice, click on “filter” and play around with the various effects to get a feel for what is available.

3. NOTE: If you are working with multiple layers and want the effect on all layers, they must all be selected. Otherwise the layer you were most recently working with will be the only layer to which the effect is applied.

Placing .psd files into Illustrator:

1. Open a new Illustrator window, copy the mallard duck image, and paste it into the file.

2. Create a new layer and make it active.

3. On the file menu, click Place and select the blue winged teal (.psd file) that you cut out last time. Notice the “link” option – make sure file is NOT linked. On the Photoshop Import Options dialog, click “Convert Photoshop Layers to Objects”. Click OK.

4. Use the selection tool to scale the duck to a nice size. (Or Object-Transform)

5. Select either the mallard or the teal, and change its opacity on the transparency menu (located with the Layers palette.)

6. Experiment with different blend options, like Multiply or Color.

Create a textured, interesting background in Photoshop

1. Create a new document – make it large (e.g., 24” x 36”). Unlock the background by giving it a new name

2. Pick a background color with the color picker.

3. On the main menu, click Filter, then Render, then Clouds.

4. Create a new layer and select a new color for that layer.

5. Click Filter, Render, Clouds for this layer.

6. Set opacity to 50%.You should be seeing the two layers superimposed.

7. Experiment with different Filter effects to find one you like.

Using Live Trace in Illustrator:

1. Go to (photo of mandarin duck)

2. Paste the image into a new Illustrator file.

3. With the image selected, on the Control Panel, open the Live Trace dialog box and select “Color 16”. Then click “Expand” to convert the artwork to Illustrator shapes.

4. In the Object menu, Ungroup the shapes.

5. Click in one of the shapes in the duck. Notice that the Control Panel has and icon and pull-down menu for “select similar objects”

6. Use the “select similar” tool or the magic wand to select all the objects of one color, and then use the color guide to change that color.

7. Open another window and paste this mallard duck:

8. On the Object menu, select Live Trace and then Tracing Options.

9. Change the mode from Black and White to Color and turn on the Preview button. Experiment with different numbers of colors and settings for Blur.

10. When you find a combination you like, click Trace. To create shapes from the tracing, click Expand on the Control Panel.

11. You can select the whole image by using the regular selection tool, and then explore using different transformation effects (Effects menu).

Note: Both Photoshop and Illustrator have good Help features. Use them if you can’t remember how to do something. Also, the on-line tutorials can help you explore many more features.

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