Breeze Systems has released an update to its tethered shooting application DSLR Remote Pro that enables certain Canon digital SLR cameras to be controlled simultaneously. Version 1.3 of the Windows-only program will trigger both the EOS 30D and EOS Digital Rebel XTi/400D at roughly the same time over separate USB cable connections to the computer. In testing, the program's developer Chris Breeze indicates he was able to fire six cameras together without any problems. Says Breeze:
"I tested a setup consisting of five Canon EOS 400D cameras and one 30D connected to my laptop at Canon's offices and it worked flawlessly. It was possible to shoot at 3fps with the 5 400Ds and 5fps with the 30D and download all the images to the laptop."
Only these two camera models are capable of the near-simultaneous triggering and image download trick, says Breeze, owing to a hardware design change Canon made starting with the EOS 30D that has carried through to the EOS Digital Rebel XTi/400D. In addition, he says if you need the cameras to fire within a few milliseconds of each other, the triggering will need to be done with a camera-connected remote release or similar accessory. That's because there is a slight delay in tripping the shutters in multiple USB-linked cameras directly from within the application.
DSLR Remote Pro 1.3 also adds support for shooting with a single EOS Digital Rebel XTi/400D, and retains single-camera support for most earlier Canon digital SLR models: EOS-1Ds Mark II, EOS-1D Mark II N, EOS-1D Mark II, EOS-1Ds, EOS-1D, EOS 5D, EOS 30D, EOS 20D, EOS 10D, EOS Digital Rebel XT/350D and EOS Digital Rebel/300D. Nikon and other brands of digital SLR are not compatible with DSLR Remote Pro.
Also in v1.3, the automatic exposure bracketing function can now call another application at the end of a sequence - to send a collection of bracketed frames to Photomatix Pro for high dynamic range blending, for example.
DSLR Remote Pro 1.3 is US$95 direct from Breeze Systems, and is a free update for anyone who purchased the program within the last year. A 15 day trial version is available. A press release has more information on what's new.
• Added more information about simultaneous camera triggering (October 23, 2006)