Polarization photography uses polarizing filters to reduce glare, reflections, and haze in photos. Polarizing filters work by only allowing light waves of a certain orientation to pass through. This has the effect of darkening skies, increasing color saturation, and reducing reflections from non-metallic surfaces like water. Polarization is used in many technologies beyond photography, such as LCD screens and digital watches.

1. Polarization Photography

2. Polarization Photography
Reduce Sun Glare
Reduce Reflections
Darkens Sky
Increase Color Saturation
Reduce Haze

3. Polarization Photography

Polarizing filters are used in photography and in
certain kinds of sunglasses. But polarization is also
used in digital watches and laptop screens. In this
unit we will learn what polarization is and how
polarizing filters can do amazing things with light.

Polarization is everywhere in daily life. It is an
important principle enabling many familiar things to
work the way they do, from sunglasses to digital
watches and laptop screens.

4. Polarization Photography
Without Polarizer
Provides better Color Saturation

Darkens the sky
With Polarizer

5. Polarization Photography
Without Polarizer
With Polarizer

6. Polarization Photography : Scattering
Haze
De-hazed

7. Polarization Photography :
Reflections
Reduce Reflections

8. Polarization Photography :
Underwater
Underwater pipelines and
communication
Offshore structures
Recreational photography
Underwater ROV/AOV

9. Light as Plane Waves
Sinusoidal plane waves very
good approximation.

Very useful for characterizing
polarization.

I max
I min
θmax
180 o

Polarized Wave: Has only one preferred orientation.

Un-polarized Wave: Has no preferred orientation
or has all orientations.

10. Classification of Polarization

Linear : Two orthogonal plane waves with same
phase but
possibly different amplitudes.

Circular: Two orthogonal plane waves with 90 deg
phase
shift but same amplitudes.

Elliptical: Possibly any degree phase shift with
different amplitudes.

11. Linear Polarization

12. Circular Polarization

13. Crossed Polarizers

14. Elliptical Polarization

15. Polarized Sunglasses
Reduce glare off the roads while driving

16. Thank
you