Exercise 8c Layers Layer Masks

	Imaging 1
f	Exercise 8c – Layers – Layer Masks
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	§ This is a formative assessment instrument § You must be rated ‘Competent’ in this assessment item.
Learning Outcomes	Learning Outcome 8 - Identify and explain a range of digital imaging concepts such as colour mode, colour space and bit depth as well as demonstrate typical fundamental digital image enhancement techniques, and identify digital image workflow patterns and create a simple file management methodology that conforms to established industry norms.
Tasks	1) Open the document ‘Exercise 8b Text.psd’ created in Exercise 8b. 2) Make the Ship and Plane layers visible. 3) Make Ship the active layer. 4) If it is not the top layer then either drag it to the top of the layers palette, or turn off any layers above it so you can see the whole layer. 5) Use the Marquee tool to draw an oval around the boat. (Make sure the Feather value is set to zero, or not too big). 6) Choose ‘Layer->Layer Mask->Reveal Selection’ (or click on the ‘Add layer mask’ icon at the bottom of the Layers palette) to hide the unselected part of the layer. Note that the Layer mask is shown in the Layers palette. 7) Select the Move tool and ensure ‘Auto Select’ is turned off. 8) Move the Ship layer. 9) On the Layers palette click on the link icon between the Ship layer icon and the mask icon to unlink them. 10) Move the Ship layer. How is this different to step 8 ? The ship and the mask move independently. 11) Click on the Ship layer mask icon on the layers palette and use the Move tool again. What does this do ? Moves only the ship within the circle. 12) Line up the ship and the mask, then click between the Ship layer icon and the mask icon to re-establish the link. 13) Make the Plane layer visible and active. 14) Use the ‘Select->Color Range . . .’ tool to select the sky. 15) Choose ‘Layer->Layer Mask->Hide Selection’ 16) Save the image as ‘Exercise 8c Masks.psd’