Non-Destructive Image Editing - 2

Instructions	Read the article provided – ‘Non-Destructive Imaging: An Evolution of Rendering Technology’ by Peter Krogh - and answer the following questions in the space provided.
	Part II – The Rendering Engine What is a Rendering Engine ? the software either on your computer or camera, that converts the RAW data into a visual image What three things determine the final colour of an image pixel ? original image data rendering engines mathematical forumla the user settings applied What are the three main components of a RAW file ? j peg preview meta data mosaic raw image Can PIE software be used only on Raw files ? Yes / No What is a Live Rendering ? a view of the raw image that is only available when the source image is loaded into the software. a temporary preview that is created from the source data when it is requested Where can the Rendering Metadata be stored ? inside the image file in a sidecare file - the extensible meta data platform file the data base catalogue Give two examples of a Fixed Rendering derivatives b. prints Is a Preview a Live or a Fixed Rendering of the image ? fixed rendering Where can Previews be stored ? in the image along with the image in a catalogue Why do File Browsers and Cataloguing software create Previews ? to speed up the viewing of the images

Non-Destructive Image Editing

Part I – The Evolution of Non-Destructive Imaging

1. Define ‘Non Destructive Imaging’

Non Destructive Imageing refers to imaging processes where the source image may be adjusted in

a way that leaves the original data intact

2. List four challenges introduced by digital photography :-
1. Storage space for digital files
2. Keeping up with the latest soft ware
3. Backing up images
4. What type of format to use for your image
3. What is meant by a ‘Derivative File’ ?

You may have a copy or a edit of the original, that is a derivative file because it has been derived from the original

4. What are two problems with using ‘Save As …’ to create derivative files ?
1. Confusion could occur because if saving multiple times to explore different aspects of the image
2. it may create storage problems if saving the same image multiple times
5. What is ‘Self Referenced Non Destructive Imaging’ ?

This term is used for haveing multiple layers on the same image, so instead of changing the image itself you could create layers to work with

6. List two advantages of Self Referenced NDI over the use of Derivative Files :-
1. Its much more ecumenical space wize because the instructions for editing a file take up less room. where the use of the additional derivative file is the size of a normal picture
2. The use of layers to it makes it easier to go back and recorrect mistakes and what not
7. Define ‘Parametric Image Editing’ :- any form of instruction that records information

8. What is the difference between a Live Rendering and a Fixed Rendering ?

Fixed rendering refers to a image that has its information in pixels and dosent need a engine to do what user wishes with the image

9. List three advantages of NDI :-
1. Make changes to a image and not have to worrie about looseing the original file

b. Takes up less space

Exercise 4 – Colour Theory 2

TASK 1. Start Photoshop and open the document you created in Exercise 3. · What is the keyboard shortcut for opening an existing Document ? ctrl+o 2. Change the Blending Mode of the layer Group to ‘Pass Through’. 3. Make the background layer the working layer by selecting it in the Layers palette. 4. Use the Rectangular Marquee tool to select the top half of the image. 5. Use the Paint bucket tool to fill this area with Black. · What is the keyboard shortcut for this tool ? G 6. Change the Blending Mode of the ‘Red Circle’ layer to ‘Lighten’. 7. Do the same for the Blue and Green Circle layers. 8. Select the Move tool. · What is the keyboard shortcut for this tool ? V 9. Turn on the ‘Auto-select’ option and set it to ‘Layer’ (Not ‘Group’). 10. Drag the three circles so they all overlap each other. 11. This simulates the RGB Colour System. 12. Rename the group of circle layers to indicate this. 13. Add a text layer (using white text) saying ‘ Colour System’. 14. Select the group of circles in the layers palette. 15. Duplicate the group using ‘Layer -> Duplicate Group …’. 16. Use the Move tool with ‘Auto-Select’ set to ‘Group’ to drag the new group to the bottom half of the page. 17. Change the Blending Mode of the this group to ‘Difference’. 18. This simulates the CMYK Colour System. 19. Add a text layer saying ‘ Colour System’. 20. Save the document as ‘Ex 4 – Primary_Colours.psd’

Exercise 3 – Colour Theory 1

Tasks

1. Start Photoshop and create a new document with the following properties :- · Name : ‘Ex 3 – Primary Colours’ · Size : A4 @ 300dpi · Colour Mode : RGB / 8 bpc · Background Colour : White 2. What is the keyboard shortcut for creating a new Document ? crtl+N 3. What is the size of the image in :- § Megapixels - Megabytes 24.9 4. Set the foreground colour to Red (ie R 255, G 0, B 0). 5. Select the Ellipse Tool (not the Marquee tool). What is the keyboard shortcut :- U 6. Draw a circle with the Ellipse tool approximately 6cm in diameter (about 1/3rd of the page width) – display the rulers and use Preferences to set the units to cm . · Which key forces the ellipse to be a circle ? hold the shift and drag 7. Change the layer name to ‘Red Circle’. 8. Duplicate the layer and · change the colour to green and · change the name to ‘Green Circle’. Note: To change the colour click on the colour button on the option bar immediately after duplicating the layer, or double click on the layer in the Layers palette. 9. Duplicate this layer and · change the colour to blue and · change the name to ‘Blue Circle’. 10. Select the Move tool. What is the keyboard shortcut ? V 11. Turn on the ‘Auto-select’ option. 12. Spread the three circles across the top of the page with a small space above them (they may overlap a bit – that’s OK). 13. Fit the image to the screen (ie so the whole page is visible). · What is the keyboard shortcut for this ? Z 14. Go to Full Screen Mode – ‘View -> Screen Mode ->Full Screen Mode’. · What is the keyboard shortcut ? I couldn’t find it 15. Stare at the centre of the middle circle for 20 seconds, then look at the white area below. You will see an after image. · What colour are the after images for each circle ? Circle After Image Colour Red blue Green blue Blue green 16. Select all three layers in the layers palette. 17. Group the three layers together by selecting ‘Layer -> Group’. · What is the keyboard shortcut ? ctrl+g 18. Select the group in the layers palette containing the three circles. 19. Change the ‘Blending Mode’ for the group from ‘Pass Through’ to ‘Difference’. (We will be looking at Blending Modes later, so don’t worry if you don’t understand them now). 20. Stare at the centre of the middle circle for 20 seconds, then look at the white area below. You will see an after image. · What colour are the after images for each circle ? Circle After Image Colour Cyan blue Magenta Yellow Yellow green 21. Save the document as ‘Ex 3 – Colour Theory.psd’ 22. What is the size of the .psd file on disk ? its way smaller How does this compare to the image size you recorded in step 3 above.

8 image overlay

this tutorial iv found hard, not as in complicated but its hard to get the images to look nice when blended together. tree and silhouette work best i found

1. have 2 or more images you like open in photoshop

2. use the move tool to take the images off the top bar so thay are floating in the screen and click them image its self and drag it onto the im image you are hoping to blend it with

3. open up the layer menu and and on the right there is a opacity and fill %. for best result i think is around 40% because anthing over stands out to much and anything below dosent stand out enough

Dan Mountford has done some really amazing stuff with this