1. Daguerreotype
The daguerreotype process is one of the earliest photographic processes,
invented by the Frenchman Louis Daguerre and announced to the world in
August 1839. A daguerreotype is a silvered copper plate, which bears the image,
and protects the plate.
The image in a daguerreotype is in negative, but it can be viewed as a positive
when the reflective surface reflects something dark. The details in a
daguerreotype can be very clear and sharp. The image itself is of higher or lower
densities of microscopic silver and mercury particles.
Polaroid
A Polaroid camera is one that the instant you take a picture, it "prints" the
picture out immediately directly from the camera. It is pretty old school, and will
take a minute or two to fully develop. Its handy for if you want or need the
picture straight away.

2. Digital
It has always been the desire of humans to be able to capture a moment and
then perhaps re-live it sometime down the line. Up until a few years ago,
photography used to be limited to a select few professionals or people willing to
own and maintain a camera, film and then develop them into photographs.
It won’t be farfetched to say that digital photography has revolutionized
photography and brought it mainstream into the hands of common people. With
mobile phones, cheap cameras and computers in homes, capturing memories is
no big deal anymore.