The GY-HM70 is equipped with a high quality 29.5mm wide-angle GT lens that offers smooth 16x dynamic zoom performance. Veteran shooters will appreciate the camera's manual focus, iris, and shutter controls, as well as manual and automatic white balance. The camera also provides an optical image stabilizer, auto focus, and focus assist.

At the core of the GY-HM70 is its 1/2.3-inch 12 megapixel CMOS imager. When combined with JVC's advanced FALCONBRID high-speed processor, it captures, processes, and records 1080/60p, 1080/60i, and 480/60i (SD) footage at various bit rates to SDHC/SDXC memory cards. It also allows high-speed video recording for slow motion footage at 300 fps (720x480 resolution), and captures 12 megapixel still images.