Advanced Photography
Assignment Sheet
Fall Semester
ADVANCED PHOTO
Assignment #4 and #5
Negative Print:
This refers to inverting an image
from a positive image to a negative image or vice versa. When you invert an image, the brightness
value of each pixel is converted into the inverse value on the
256-step-color-values scale. For example,
a pixel in a positive image with a value of 255 (pure white) is changed to 0 (pure
black). You would use this command to make a positive black and white image
negative, or to make a positive from a scanned black and white negative. Because color film contains an orange mask in
its base, the Invert command cannot make accurate positive images from scanned
color negatives. Therefore if you chose
to use a role of color film for this, make sure you scan your negatives as
“color negatives”, then you can use the following steps to convert your
positive into a negative. If you use b/w
negatives you can scan them as color negatives.
Keep them as a negative set up and simply convert to b/w mode—no need to
use a filter. Otherwise here are the
steps to create a digital negative print:
To make a
negative print from a positive darkroom image:
1. Scan your positive print as you normally would
at 300 dpi (grayscale).
2. Make sure your print is
a. Resized
b. Edited for spotting/dust
c. Dodged/Burned using selection
tools
d. Set to grayscale mode if not
previously done already
3. Go to Filter > Adjustments >
Invert.
4. Alter your final image using
levels, brightness, contrast, selection tools, etc… until your liking.
5. Print your image
Sabattier
effect:
In
darkroom photography this refers to re-exposing the photographic paper during
development to render a silvery, almost eerie image, often containing distinct
white or light lines separating the highlight and shadow areas.
Sabattier creates a partially reversed image
with an unusual negative and positive appearance. Lightly exposed areas are most affected since
these are areas that prior to becoming solarized have
retained a lot of unexposed silver; with re-exposure, because they have much
silver left to respond to lights, they become more dense. Highly exposed areas are barely affected
since these are areas that already have a lot of density prior to re-exposure,
so the additional light does not affect them as much.
The distinct lines separating the
highlight and shadow areas are called Mackie lines. These are caused when chemical by-products
from the first part of the development retard additional development. The results are lines of low density,
rendering as light on a solarized print.
In the
digital darkroom this effect is seen through a series of Photoshop effects and
filters. The Solarize
filter blends a negative and a positive image, for a result similar to exposing
a photographic print briefly to light during development. You can manipulate
this process by selecting only certain areas to be affected, or solarizing the entire are and dodging and burning selected
areas to create a more uniform effect. Play around with all that you know in Photoshop to enhance
this process.
To solarize
digitally:
1. Scan a negative (new or old as you
wish) that you think would render to look successful as a sabattier
image. You can choose to scan a darkroom
print from last year if you’d like as well.
If scanning a print, make sure you set the scanner to 300 resolution. If
scanning a negative scan at 2400 dpi (only scan 1-2 negs,
otherwise you’ll be there all day waiting!).
2. Make sure your print is
a. Resized
b. Edited for spotting/dust
c. Dodges/Burned using selection
tools
d. Set to grayscale mode
3. Go to Filter > Stylize > Solarize
4. Edit your solarization
using levels, or brightness/contrast, etc..
5. Print your image
For this
assignment please make 2 prints one sabattier and one
negative print to your liking.
In you journal:
Write about your experience during this process.
How did this
process differ from the negative
print process? What was the outcome
of this printing process? Was it more successful
or less successful
than the negative print? How so? Which
effect do/did you prefer? Explain and elaborate on your
responses.
Due: Block Day, November 5th
1 Negative Print
1 Sabattier
Print