16
INSTRUCTOR
NO
TES
Lesson 2: Basic
Photo
C
orr
ec
tions
Lesson 2 gives the students experience with the most basic and commonly used
f
ea
–
tures. Even beginners are eager to learn practical techniques such as
straig
h
t
ening
images that have been scanned in at an angle, crop them, and compensate for c
olor
casts due to the exposure. Lesson 2 also introduces students to Adobe Bridge, whic
h
t
he
y
ll
use
throughout
the book. It discusses the
important
concept of
resolution,
and gives students more experience with
adjustment
layers.
Image retouching can be overdone. Help students learn how to look closely at
an
original image to see what needs correcting, and at the end results, to make
su
r
e
that the image has been improved sufficiently but not so much that it no long
er
looks realistic. Examining the steps in the History panel can be useful in
r
e
v
ie
w
i
ng
work to find out when image retouching might have gone too
f
ar
.
Goals
for this lesson
At the end of this session, your students should be able to describe the strengths
and
limitations of various retouching strategies used in the lesson, and know which
t
o
ols
to use for specific
r
e
p
ai
rs
.
S
cheduling this lesson
Lesson 2 and Lesson 5 contain closely related subject matter. In both lessons,
stu
–
dents use tools to make color changes and corrections to a limited area of the
i
mag
e.
If your class sessions are long enough, you could group these two lessons into a
ADOBE PHOTOSHOP CLASSROOM IN A BOOK (2022 RELEASE)
17
Organizing
an efficient
sequence
of tasks
The steps listed in this section are the most efficient sequence of retouching
st
e
p
s
,
s
o
they should usually be done in the order presented. For example, tone
correction
should be done before color correction because correcting tones can have the side
effect of altering saturation, changing the amount of color
adjustment ne
e
de
d.
Adjusting your
process
for intended uses
Students should be clear on the concept that the specific settings applied at many of
these stages will differ depending on the final output. For example, the best
r
es
olu
–
tion and sharpening values for print are much different than for the web or video.
In
Resolution
and image size
For many students, resolution is an especially challenging topic. In part this is
because people use the term resolution in different ways. For some resolution
means
pixel dimensions (width and height in pixels), while for others it means pixel
density
(pixels per inch). Students should
understand
that changing pixel density alone
do
es
not change pixel dimensions or file size. You can
demonstrate
this in the Image >
Image Size dialog box with the Resample option turned off. If some students
i
nsi
st
18
INSTRUCTOR
NO
TES
Supplementing the resolution
t
opics
A good way to clarify how resolution works is to discuss its implications in
d
i
ff
eren
t
scenarios, such as the following:
When dragging or pasting a layer between documents of different
r
es
olutions
,
why does the size of the layer appear to c
hang
e?
What happens if you adjust the image resolution after you correct
and
retouch an image?
Why not just leave an image at maximum
r
es
olution?
Somebody sends you a family
photograph
in email that takes a long time
t
o
download. When you open the image in your browser, you can see only
one
small area of the picture so that you have to scroll to get an idea of the whole
shot. What should the sender have done to avoid these
anno
y
anc
e
s?
Wha
t
s so terrible about making the image dimensions very small and then
l
a
t
er
scaling it up to the size you
w
an
t?
Can you increase resolution? How do you do this in P
hot
o
shop?
Upda
t
e
to
Adobe
Bridge:
W
orkflow
s
The 2022 release of Adobe Bridge may appear slightly different than it does in
t
he
Classroom in a Book, showing a new workspace named Workflow. This does
not
Repairing areas
in the image
Students work with the Clone Stamp tool, the Spot Healing Brush tool, and
t
he
content-aware
Patch tool to perform different types of repairs. Ask students
wha
t
Applying
a
C
on
t
en
t-
A
w
ar
e
P
a
t
ch
This section directs the student to hover the Object Selection tool over the
fig
u
r
es
until the boy is highlighted with a blue silhouette. This is the new Object
Fi
nder
ADOBE PHOTOSHOP CLASSROOM IN A BOOK (2022 RELEASE)
19
Applying the
Smar
t
Sharpen
filt
er
This section can be an
opportunity
to discuss why most, if not all, images require a
t
least some sharpening, and what students should think about as they apply s
harpen
–
ing. You might discuss the other sharpening filters with students, and describe
wh
y
they might use different filters in specific
sit
u
a
tions
.
The sharpening features in Adobe Photoshop, Adobe Camera Raw, and
A
dob
e
Lightroom were heavily influenced by the late Bruce Fraser, a Photoshop and c
olor
expert who wrote influential Adobe Press books such as the Real World
A
dob
e
Supplemental
information:
Best
practices
You may want to encourage students to think about these issues before they
b
e
gi
n
making adjustments. They s
hould:
Work with a display
t
ha
t
s calibrated and profiled. For professional image e
d
iting
,
this is essential. An image edited on a calibrated and profiled display can at
le
a
st
20
INSTRUCTOR
NO
TES
Consider using tools like the Info panel or Histogram panel in Expanded view
t
o
Questions
The following questions are not in the
studen
t
s Classroom in a Book.
1 What is the benefit of using an
adjustment
layer?
2 How can you straighten an image?
3 How do you sample a selection when using the Clone Stamp
t
o
ol?
Answers
1 Adjustment layers are
nondestructive.
You can make changes, such as
t
onal
3 The Clone Stamp tool can sample sources in the current document or any
open