<meta http-equiv="refresh" content="1; url=/nojavascript/"> Diffraction ( Real World ) | Physics | CK-12 Foundation
Dismiss
Skip Navigation
You are viewing an older version of this Concept. Go to the latest version.

Diffraction

%
Progress
Practice Diffraction
Practice
Progress
%
Practice Now
Blurry Photos

Need to be More Focused

Credit: 55Laney69
Source: http://flic.kr/p/bT7pDn
License: CC BY-NC 3.0

[Figure1]

Normally when diffraction comes up, most people think of light bending around a corner.  But diffraction doesn’t just apply to physics, it also is relevant to photography.  It plays an important part of how images end up, whether day or night, cloudy or sunny.

Creative Applications

  1. Research the basics of a camera.  What is aperture and what do f/2 and f/24 mean with regard to lens size and light?
  2. Using a dSLR or any camera that can adjust aperture, take pictures of the same object in same lighting.  Try staying indoors to keep lighting constant. (For simplicity visit http://d2f29brjr0xbt3.cloudfront.net/921_diffraction/comparison2.jpg to see effects of apertures on photos)  What do you notice about the image when aperture changes?
  3. Based on your results, why is it generally advised to mainly use apertures of f/8-f/11?  What does this have to do with diffraction?  

Resources

http://digital-photography-school.com/aperture

http://photo.tutsplus.com/articles/theory/when-sharp-isnt-sharp-diffraction-and-apertures/es/

http://scubageek.com/articles/diffraction.pdf

Image Attributions

  1. [1]^ Credit: 55Laney69; Source: http://flic.kr/p/bT7pDn; License: CC BY-NC 3.0

Explore More

Sign in to explore more, including practice questions and solutions for Diffraction.

Reviews

Please wait...
Please wait...

Original text