This page describes how to set up a camera to repeatedly/continuously take pictures during [balloon or kite mapping](/tool/balloon-mapping)
for timing two cameras together, [see dual camera triggering](wiki/dual-camera-trigger)
##How do you keep the camera continuously shooting photos during flight?##
Many cameras can be set in "**continuous shooting mode**", which generally allows you to hold down the trigger button to take many continuous photos. The mode is different for each camera, and not all cameras have it. [Check the camera selection page](http://publiclaboratory.org/wiki/camera-selection). We recommend Canon cameras for reliability; some cameras will shut off after a few minutes. See below for details.
Some cameras can be set programmatically, such as Canons using the [Canon Hack Development Kit (CHDK)](http://chdk.wikia.com/wiki/CHDK). Some Canons can also also be triggered by infrared remote control codes, useful for stereo or near infrared camera pairs, along with [Stereo DataMaker](http://stereo.jpn.org/eng/sdm/index.htm). [Cris Benton and others use motors to trigger cameras that can't be programmed](https://www.flickr.com/photos/kap_cris/3154193529/). A more drastic option is to hack a timer directly into the camera's shutter button circuit, [like this 555 timer](http://publiclaboratory.org/notes/mathew/8-5-2011/adjustable-555-based-shutter-trigger-circuit).
Taking lots of photos is generally easier than controlling when a photo is taken. Once you find a camera with continuous shot, test the battery to see how long it will shoot. Put in a memory card with 4gb+. Consider getting a second battery.
###Super Simple: Holding down the shutter###
This is for use with the [PET Bottle Rig](http://publiclaboratory.org/wiki/pet-bottle-rubber-band-rig)
Instead of using a balled up piece of tape, a pebble, or some other thing to hold down my camera's shutter, I've gone to using a knot. This makes it easy to hold in place, and makes setting it easier. I prefer [a rubber band](http://publiclaboratory.org/wiki/rubber-bands), but tape also holds it down. tape may be more useful for bulging, non rectangular cameras.
My Canon SD1000 needs the [rubber band](http://publiclaboratory.org/wiki/rubber-bands) tripled up to hold it in place:
Source: http://publiclaboratory.org/notes/mathew/1-29-2012/using-knot-trigger-cameras
Source: http://publiclaboratory.org/notes/mathew/1-29-2012/using-knot-trigger-cameras