Flash applets on some technical aspects of photography

CS 178 - Digital Photography
Spring Quarter, 2014
Marc Levoy, Andrew Adams, Katie Dektar, and Nora Willett


These applets are designed to supplement the course lecture material in CS 178. They will typically be demonstrated live in class, then added to this web page. At that time they will also be linked into the course schedule and the course home page. The applets were designed by Marc Levoy and built by CURIS students Nora Willett and Katie Dektar, and PhD student Andrew Adams in the spring and summer of 2009.

Applet Categories:













Exposure

Variables that Affect Exposure

exposure applet screenshot

Explores the tradeoffs between aperture, exposure time and ISO.



Lens Applets

Thin Lens

thin lens applet screenshot

Uses Gauss's ray tracing construction to show how thin lenses perform a 3D perspective transformation of object space into image space.

The Gaussian Lens-Maker's Formula

gaussian applet screenshot

The relationship between object distance, image distance, and focal length, and the distinction between focusing and zooming.

Depth of Field

depth of field applet screenshot

How do focal length, subject distance, F-number, and size of the circle of confusion affect depth of field?

Telephoto Zoom Lens

zoom applet screenshot

The operation of zoom lenses, telephoto zoom lenses, and optically-compensated telephoto zoom lens.



Autofocus

Autofocus: Phase Detection

autofocus: PD applet screenshot

Explore how some cameras (mostly SLRs) use phase detection to autofocus a picture.

Autofocus: Contrast Detection

autofocus: CD applet screenshot

Explore how other cameras (mostly point-and-shoots) use contrast detection to autofocus an image.



Convolution

Spatial convolution

convolution applet screenshot

Interactively demonstrates 1D continuous convolution and 2D discrete convolution. Don't miss the "custom" buttons!





Questions or Comments? Please e-mail us.
© 2014; Marc Levoy
Last update: April 22, 2014 07:09:12 PM