oscillator
12-28-2006, 02:27 PM
Here is the test:
Place the camera in continuous shot mode. Point at something bright, press and hold the trigger. While holding the trigger move the camera toward a dark scene.
Ideally you should wind up with a series of photos all perfectly exposed. If you camera has a movie mode, try that too.
Here are my results:
Canon S400 - no, exposure and focus only set with initial shutter release
Canon S630 - same.
Nikon D70s - exposure and focus adjusted with each frame.
Of course the D70s is quite a large camera for most helis. Ideally I'd like to use something like the A640 or G7 on a Logo 10, but I want a camera that properly adjusts exposure with each frame, and I'd like it to do this in video mode too (no video mode on a DSLR).
It would also be nice to find a camera that was small enough for the Trex with proper exposure control in multi shot mode.
BTW - the Canon S series does not have IR shutter trigger and does not work with USB shutter trigger - so you either use a servo, strap the shutter button down (and have no exposure metering), or hack the camera. Otherwise they are great little cameras.
Place the camera in continuous shot mode. Point at something bright, press and hold the trigger. While holding the trigger move the camera toward a dark scene.
Ideally you should wind up with a series of photos all perfectly exposed. If you camera has a movie mode, try that too.
Here are my results:
Canon S400 - no, exposure and focus only set with initial shutter release
Canon S630 - same.
Nikon D70s - exposure and focus adjusted with each frame.
Of course the D70s is quite a large camera for most helis. Ideally I'd like to use something like the A640 or G7 on a Logo 10, but I want a camera that properly adjusts exposure with each frame, and I'd like it to do this in video mode too (no video mode on a DSLR).
It would also be nice to find a camera that was small enough for the Trex with proper exposure control in multi shot mode.
BTW - the Canon S series does not have IR shutter trigger and does not work with USB shutter trigger - so you either use a servo, strap the shutter button down (and have no exposure metering), or hack the camera. Otherwise they are great little cameras.