Technology Two

Friday, 2 September 2011

Work FLow

	1	2	3	4	5	6	7	8	9
Stage	Deal with client	Capture images	Uploading to computer	Sort and select	Basic editing	Advanced editing		Preparing files	Deliver to client
Tasks	Brief – contract (Copyright, price, end use of images, number of images, location, timeline)	File types (RAW, JPEG or both), Colour space (adobe RGB rec.), equipment needed (lenses, lighting, cards, batteries etc), logistics (location, models etc)	Thru camera, card reader, wifi, tethered capture, may convert uploaded files to DNG, add metadata Software (Lightroom, Bridge, file browser,	Reject duds, rate images, create collections, flag/colour labels Software – Lightroom and Bridge, Aperture	Colour correction, sharpening, cropping, straighten, tonal correction, lens aberration correction, exposure, dust spotting, noise reduction Software – Lightroom and Bridge	Skin corrections, changing shapes of faces, panoramas, HDR, montages, Software - Photoshop		Resizing files, resolution, file naming, file types	Payment J J - prints, digital files on CD, albums, online lab service
Backup			1^st Backup	Or 1^st Backup here	2^nd backup	Or 2^nd Backup here		Final backup
Notes						Save in PSD format to keep layers.

Exercise 6 - Non Destructive Editing

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.

If you have worked Non-Destructively throughout this exercise you should be able undo or modify any of the editing changes you have performed.

Monday, 29 August 2011

Non Destructive Editing Questions

Define ‘Non Destructive Imaging’

In general, NDI refers to imaging processes where the source image may be adjusted in a way that leaves the original data intact. There are several different ways to accomplish

this type of adjustment, each with its own uses, strengths, and weaknesses

List four challenges introduced by digital photography :

a. The creation of a vast number of photos
b. The need to apply identical adjustments to many photos in one operation
c. The need to interpret a single source image in multiple ways (black and white, and color, for instance)

d. The desire to take advantage of rapidly evolving imaging technology to reinterpret images with more capable software in the future

What is meant by a ‘Derivative File’ ?
A derivative file is a copy of a source image that is saved out to a separate file. A derivative file may or may not have had explicit rendering or processing changes baked into it, relative to its source image

What are two problems with using ‘Save As …’ to create derivative files ?

a. While this approach enabled the user to save both the original and the adjusted version, it came

at a high price. The creation of multiple variations of a photo could bring great confusion.

Often

users would append a term to the file name to indicate its adjustment, but that might be hard

to sort out later. Trying to sort out the difference between Picture1_final3_Sharpen.TIFF and

Picture1_final3_realfinal.TIFF would often not be worth the effort.

b. Use of derivative files to enable NDI also brings a high price tag in terms of storage. Since the entire file needs to be resaved, even small changes require resources to duplicate and archive the entire file. So while use of derivatives enables NDI, it does not do it very efficiently.

What is ‘Self Referenced Non Destructive Imaging’ ?

In Photoshop 3, layers were introduced and it became possible to save multiple versions of the same image within a single file. This helped with the management difficulties associated with derivative file workflow but did nothing to address the storage needs. In Photoshop 4, adjustment layers were introduced, and it became possible to wrap up the source image with a set of instructions (or many sets of instructions) for rendering the photo. Let’s call this

self-referenced NDI

List two advantages of Self Referenced NDI over the use of Derivative Files?
a. Using self-referencing files offers some significant advantages over derivative file workflow. Since

the instructions to adjust the image take up much less space than creating an additional file, it’s much more economical in terms of storage. And since you can name adjustment layers for an effect—as well as clearly see what the adjustment does—it becomes much easier to sort out what has been done to an image

Using adjustment layers also offers you the ability to create a separate interpretation of the file—

a black-and-white version, for instance—while still making use of some of the work done for other versions, such as retouching

Define ‘Parametric Image Editing’?

The editing of images by creating instructions or parameters parametric image
editing (PIE).

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

A live rendering is a view of the images that only exists when the image is loaded into PIE Software

A fixed rendering is a rendering of the image that is saved into pixel values or printed on paper. In a color-managed workflow, it is not dependent on any particular rendering

engine to display correctly

List three advantages of NDI :-

a. One of the great advantages of catalog-based NDI software is the ability to generate many kinds

of output from the same source image. Because all the information about the photos can be gathered in a single environment and can be integrated with the ability to control them, the user has

unparalleled capacity to group and make use of photos on a collection-wide basis.

b. There can be many different ways to organize a collection of photographs. It might be useful to

group photos according to subject matter, client, usage, or quality rating. And once these groupings are created, one might wish to output a subcollection to print, a slide show, a web gallery,

or another derivative product.

c. Catalog-based PIE software that is integrated with a rendering engine can create these derivative

products even more efficiently than non-rendering cataloging software. It’s frequently desirable

to do a bit of touch-up to the image files on the way to output. Having that ability within the

same program that groups and sends files to output lets the user integrate picture selection and

image editing in a streamlined way