The document traces the history of photography from its earliest beginnings with Johann Schulz's discovery that silver nitrate changes color with light exposure, enabling the first photographs, to major innovations like the first photograph by Joseph Niepce using camera obscura, Louis Daguerre's process requiring only 30 minutes of exposure, the development of negative prints by William Henry Talbot, and faster exposure times due to the collodion process. It highlights inventions like gelatin dry plates by Richard Maddox allowing photos to be developed later, the first roll film camera by George Eastman, instant film by Polaroid, and digital cameras developed by companies like Canon, Sony, Kodak and others, leading to widespread camera phones.

2. Johann Heinrich
Schulz
discovered that
a substance
called silver
nitrate would
change color
when exposed
to light. This
paved the way
for the first
pictures to be
taken and
processed.

3. Joseph
Niepce
developed
the camera
obscura
and took
the first
photo with
it. It wasn't
ideal,
though,
because it
took 8
hours of
light
exposure to
make a
picture,
and the
picture
faded with
time.

4. Louis Daguerre invented a new way to take pictures. It only needed
30 minutes of light exposure, and the image didn't fade with time.

5. William Henry Talbot
developed the
Calotype process.
This made it possible
to make multiple
copies of the same
picture.

6. With the
new
Collodion
process,
cameras
only
needed a
few
seconds of
light
exposure to
make a
picture.

7. Up until this
time pictures
had to be
developed
immediately
after being
taken.
Richard
Leach
Maddox
invented the
gelatin dry
plate silver
bromide
process,
which made
it possible to
take a
picture and
develop it
later.

8. George Eastman
invented the first
roll-film camera.

9. The Polaroid
allowed
people to
take a photo
and have it
developed
immediately,
right from the
camera.

10. Polaroid
came out
with the first
colored film.

11. The Sasson Company built the first digital camera.

12. Canon put
out the first
digital
camera for
the public,
which was
later
improved by
Pixar.

13. Sony put out
the first
consumer
camcorder,
allowing
people to
record their
memories in
real time.

14. The camera
phone
technology was
first used in
Japan, but it
quickly spread
around the
world.

15. Kodak put out
their Easy Share
digital camera,
which made it
easy to snap
pictures and
download
them to the
computer.

16. Kodak put out
cameras that
didn't have to
be
connected to
a computer in
order to
download
and share the
pictures.