Requires Dragonframe 2.3.8 or newer.
The Canon EOS 550D provides a live view via its USB connection. The live view size is 1056 x 704.
Dragonframe controls the Canon EOS 550D ISO, shutter speed, aperture (with digital lens), image quality, and size.
You can find the Canon EOS 550D manual and specifications at the Canon website.
To avoid any potential flicker that can be caused by electronically controlled aperture lenses, please consider using a fully manual aperture lens.Learn More about Aperture Flicker