The Canon Vixia HF G21 is a pro-level camcorder on a budget -- features like 4K are missing, but options like image stabilization, manual exposure and manual focus are all included in this $825 camcorder.
The HF G21 uses a 1/2.84 inch sensor, which is on the high-end of consumer camcorders and the lower end of professional options. The camcorder uses Canon's HD CMOS Pro design, which the company says offers better low light performance and sharp images. A feature for wide DR gamma allows the camera to capture better detail in the lightest and darkest areas of the image. Those sensor specs are paired with a hybrid stabilization system that uses both optical and electronic options.
The camcorder's lens offers a wide range with a 20x zoom, covering the equivalent of about 28mm to 576mm on a 35mm camera. Focusing is done with a hybrid system, including options for facial detection and manual focus. Exposure can be automatic or using the G21's manual modes.
Several of the video camera's pro features are in the design. The camcorder has dual SD card slots, which can record different formats simulataneously, along with HDMI mini, stero mini jack, USB, and 3.5mm four-pole mini jacks. The G21 also has a cold shot slot for adding accessories, such as a video light or microphone. (Canon's XA15 and XA11 are similar but offer XLR audio terminals and a handle).
Overall, the Canon Vixia HF G21 offers a decent mix for budget-minded professionals, but there are some 4K-capable cameras that may have fewer ports but work for some users, like the Panasonic VX981 and the Sony AX53.