Goleta DeskTop Publishing User Group
Meeting Information

October 4 -- Time Lapse Digital Photography
by Bryan Mumford

Bryan is an inventor and has developed a device which allows people to take photographs at precise times after a triggering event. This device, which he sells as "The Time Machine", allows high speed photographs of popping balloons (in mid-pop), the brief splash of a milk drop, unattended photographs of wildlife, and time lapse movies of clouds or flowers opening. Demonstrations and examples of photographs will be shown.

We plan to perform the following demonstrations:

• Popping a balloon with a pin and triggering on the sound
• Popping a balloon with a blow gun and triggering with the ballistic sensor (a device that measures the speed of the object and allows the photographer to specify exactly where that object is to be when the photograph is taken)
• A water drop splash, triggering with the optical interruptor

Take a look at the photos and QuickTime movies at http://www.troutcom.com/gdtpug/0110pics.html to get an idea of what can be done with a little imagination.

Sometimes you need to see exactly what's happening, but the action is too fast to see by eye. If it is repeatable, like the milk drop or a mechanical action, you can take a series of pictures, each with a little more delay, and string them together into a movie, like these clips of a milk drop splashing into a saucer, which can be seen at
http://www.troutcom.com/gdtpug/011004/milk.html
and of a Synchronome clock escapement, which can be found at
http://www.troutcom.com/gdtpug/011004/escape.html

Please send email to gdtpug@troutcom.com with suggestions for topics you are interested in seeing covered. Or even better, volunteer to give a presentation!

The Goleta DeskTop Publishing Users Group is a SIG (Special Interest Group) of the Santa Barbara PC Users Group. We are not platform specific: some members have PCs, some have Macs, some have both. Linux and other systems are sprinkled in as well for good measure. We focus on the issues of publishing in all forms, be it on paper, web, CD-ROM, or some other medium.