ADOBE PHOTOSHOP CLASSROOM IN A BOOK (2022 RELEASE)
53
Lesson 9: Advanced
C
ompositing
In this lesson, students have an
opportunity
to work with the Liquify filter as a
Smart filter, combine multiple files into a multi-layered project, and use filters
t
o
change the look of various aspects of the project. This lesson also introduces
stu
–
dents to the History panel, a valuable tool for undoing and stepping backwards
i
n
their
wor
k
.
Goals
for this lesson
This lesson is more about being creative with Photoshop than about strict
t
ec
h-
niques. Students have a chance to explore some of the more artistic a
ppl
ica
tions
of Photoshop as they composite multiple images into a poster.
By
the end of
t
he
lesson, they should also
understand
how to use the History panel to undo a series of
steps so they can try a different creative a
ppr
o
ac
h.
Exploring
filt
ers
Some beginners are drawn to Photoshop by the idea that Photoshop filters will
b
e
54
INSTRUCTOR
NO
TES
You may want to explore the organization of the Filter menu with your c
l
ass
:
Filter > Neural Filters is a group of filters that was added in the 2021 release of
Filter > Filter Gallery is a great way to explore special effect filters by
tr
y
i
ng
Applying
Smar
t
F
ilt
ers
When
introducing
students to Smart Filters, you can compare them to
adju
stmen
t
layers. Smart Filters are
nondestructive:
they can be adjusted, turned off and on,
and
deleted at any time. In contrast, regular filters permanently change an image;
onc
e
applied, they cannot be removed. Unlike
adjustment
layers, however, Smart
F
ilt
ers
can be applied only to a Smart Object layer. You may want to suggest to
studen
t
s
that
they duplicate and hide layers that they want to keep in bitmap form
b
ef
or
e
t
he
y
convert them to Smart
O
bjec
t
s
.
ADOBE PHOTOSHOP CLASSROOM IN A BOOK (2022 RELEASE)
55
Supplementing this lesson
This lesson introduces students to only a few filters. Encourage your students
t
o
experiment with additional filters on their own. You could say that the real fun of
complex images builds on a foundation of multiple layers that include multiple filter
effects, multiple opacity settings, and multiple blending
mo
de
s
.
You may want to pass along the following tips about
filt
ers
:
When applying the same filter multiple times, choose it at the top of the
F
ilt
er
If a filter c
an
t
be used, the reason may be related to the image mode (see
t
he
images or
8-bits–per-channel
i
mages
.
On large images, running some filters may result in an
out-of-memory
er
r
or
.
Using
the History panel
to
undo edits
Note that this section in the Photoshop Classroom in a Book includes a full e
x
plana
–
tion of how the Undo, Redo, and Toggle Last State commands work in the c
u
rr
en
t
release. In these
Instructor
Notes, those changes were
mentioned
in Changes to
t
he
Undo/Redo command in the notes for Lesson 1.
You can use the History panel simply to undo steps, or to use past History steps as a
resource for painting. You can use it to combine two versions of an image into a
single image that represents the best of both worlds. Make sure students
understand
56
INSTRUCTOR
NO
TES
Upscaling a
low-resolution image
The note next to the topic Upscaling a low-resolution imag describes
t
he
Preserve Details 2.0 option in the Resample menu in the Image Size dialog box. If
a student does not see this option in the release of Photoshop, have them open
t
he
Preferences dialog box, select the Technology Previews channel, and make sure
t
he
Enable Preserve Details 2.0 Upscale option is
ena
bled.
The existing Resample options in the Image Size dialog box are conventional
r
e
si
z
–
Questions
The following questions are not in the
studen
t
s Classroom in a Book.
1
Wha
t
s the fastest way to apply the most recent filter you used to a different
l
ayer
or
do
c
umen
t?
2 What are some of the differences between blending modes and filters?
3 How can you use a low-resolution image at a larger size?
Answers
1 Choose the first command on the Filter menu, which lists the last filter you
u
sed.