Non-Destructive Image Editing - 3

1.    What model does cataloguing software use ? These programs use a library model for their structure. Where are the images stored in a catalogue based system ? The files are stored in a single folder, in multiple folders, or even across multiple hard drives. Where does the catalogue get its initial information about the files ? Software has collected all the metadata about the photos in a central location—and because the software can create new meta­data as the user deems necessary—the catalog becomes a versatile place to know about entire collections, and to control and manage the photos. Where does the cataloguing software store this information ? It’s natural fit for cataloging software and non-destructive imaging to grow together, storing the software in programs like Apple Aperture and Photoshop Lightroom. What is the main organising principle of Browser based systems ? It never uses the database as a place to save information. File browsers merely cache information in their databases. That is, they stash it there for quick access but always look to the original source file to see if the cache is up to date and correct. How do cataloguing systems organise their images ? With cataloging software the informa­tion about the photo is assumed to be most accurate in the catalog, rather than what may be residing in the file itself. Of course, much of the information came from the file originally and can be pushed back into the file when desired. How does a cataloguing system make changes to an image ? When you make a rendering change to an image with catalog-based PIE software, you are changing the information in the catalog and in the preview that gets cached, but you are not necessarily touching the original file. Can other programs see these changes ?                          Yes     9.   How does a cataloguing system make changes to an image available to other programs ? If your library is made up of DNG files, you can push an embedded preview back into the DNG file. This semipermanent fixed rendering can make the adjustments visible to any program and remains embedded in the source file itself for easy management. List 5 advantages of Cataloguing based PIE software ? Simplifies organizing archiving of photos Information can be created, stored, and cross-referenced in a single environment Multiple renderings can be attached saving of multiple versions Give two examples of software that combine Image Cataloguing and Editing functions ? Apple Apeture Lightroom

NON DESTRUCTIVE IMAGING TUTORIAL

1.       Open the image NDE-1.tif in Adobe Camera Raw and do the following :- i.         Use the Straighten tool to straighten and crop the image. ii.        Adjust the colour temperature. iii.      Adjust the Basic controls to give good rendition of the view outside the lighthouse. iv.      Use the HSL/Greyscale control panel to make the orange rocks and foliage slightly more saturated. v.        Use the Local Adjustment Brush to lighten the floor and ceiling to reveal a little more detail in these areas. vi.      Use a second soft Local Adjustment Brush to brighten the light lens and add a yellow colour to it. 2.       Open the image into Photoshop as a smart object. 3.       Use ‘File->Place…’ to add NDE-2.tif as a smart object into the image. (Press enter when the image appears.) i.         Flip the new layer horizontally so the photographer is facing in the opposite direction. ii.        Resize the new layer to make it a bit smaller. iii.      Remove the background from the new layer by creating a layer mask. (There are a number of ways to do this). iv.      Move the photographer into an appropriate position at the bottom of the frame, and resize if necessary. 4.       Double-click on the NDE-1 icon in the layers panel to open it in ACR. i.         Make a change and resave to see the effect. 5.       Double-click on the NDE-2 icon in the layers panel to open it in Photoshop. i.         Make a change and resave to see the effect. 6.       If you have worked Non-Destructively throughout this exercise you should be able undo or modify any of the editing changes you have performed.

Non-Destructive Editing Commands

Non-Destructive Image Editing 2

Part II – The Rendering Engine

What is a Rendering Engine ?

               

The color information in the raw file needs to be sent through a rendering engine to be

turned into standard RGB color. 

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

 original image data

settings applied by user             

rendering engines math formulas

What are the three main components of a RAW file ?

jpeg preview

metadata

mosaiced RAW image

Can PIE software be used only on Raw files ?             

       No. 

PIE software is now being used on source images that come in to the

program as fully processed RGB images, such as JPEGs or TIFFs.

What is a Live Rendering ?

       A temporary preview, before it becomes permeant 

Where can the Rendering Metadata be stored ?

XMP data

sidecar file

 database

Give two examples of a Fixed Rendering

derivatives 

prints

 Is a Preview a Live or a Fixed Rendering of the image ?

They are Fixed.

Where can Previews be stored ?

RAW files

 data base

 file browser

Why do File Browsers and Cataloguing software create Previews ?


To speed up the display