Non-Destructive Image Editing - Questionnaire 2.

Questionnaire #2

1. What is a Rendering Engine?

A rendering Engine is built into the image or cataloguing software and simply creates a rendered preview of the original image/photograph according to the list of adjustments that have been made. Think of it as software metadata attached to the photograph; similar to camera metadata (shutter speed, ISO, aperture, colour temperature etc) except the list is often a lot longer.

2. What three things determine the final colour of an image pixel?

a) The original image data.

b) The rendering engine’s mathematical formulas and

c) The settings applied by the rendering software.

3. What are the three main components of a RAW file?

a) The JPEG preview - (compressed version of full image)

b) Camera metadata - (with camera settings, lens used time and date etc)

c) Mosaiced RAW image - (actual light information recorded by digital sensor)

4. Can PIE software be used only on RAW files? Yes / No

NO

5. What is Live Rendering?

Live rendering is a view of the image that only exists when the source image is loaded into the software and could be thought of as “not yet finished” or “not yet ready to print”.

6. Where can the Rendering Metadata be stored?

a) Within the source file (dependent on file format)

b) In a sidecar file (relating set of instructions) or

c) In a database

7. Give two examples of a Fixed Rendering.

a) A photographic print of the image and all its adjustments.

b) A flattened and compressed copy of a file that once was a layered file with a set (or list) or instructions.

8. Is a PREVIEW, a Live or a Fixed rendering of the image?

It is a live rendering of the original image/photograph.

9. Where can Previews be stored?

Within the original source image file, alongside the image file or in a catalogue of image files. A PREVIEW is a semi-permanent fixed rendering of the image that simply shows the adjustments made by the rendering engine.

10. Why do File Browsers and Cataloguing software create Previews?

Because it avoids the need to push-pixels around (like how it used to be done) and instead allows the user a visual representation of what the input they are giving the software’s rendering engine in order to adjust the original image/photograph just the way they want.





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