The HDMI is $300 and the HDMI-SDI is $500:
"The F3 monitor is lightweight, portable, and boasts an LED backlight display. Top that off with the F3's ability to accept a wide range of operating voltages, and you'll see why this broadcast quality monitor is a perfect solution for any project. This HDMI & HD-SDI model features Composite RCA, Composite BNC, HDMI, and HD-SDI BNC connections. With its LCD display, this monitor consumes less power and delivers more vibrant, accurate images. If needed, the monitor gives you the option to view in color or black & white as well as flip the image vertically. The F3 monitor automatically detects whether the signal is NTSC or PAL, and you can choose whether to display in either a 16:9 or 4:3 aspect ratio. The F3 monitor far exceeds the F1 monitor offering 1024 x 600 pixels and far advanced sun screen. The monitor comes with a built in Sony NP-F battery plate. The F3 monitor offers versatility at a price point you can't ignore."
"The F3 monitor is lightweight, portable, and boasts an LED backlight display. Top that off with the F3's ability to accept a wide range of operating voltages, and you'll see why this broadcast quality monitor is a perfect solution for any project. This HDMI & HD-SDI model features Composite RCA, Composite BNC, HDMI, and HD-SDI BNC connections. With its LCD display, this monitor consumes less power and delivers more vibrant, accurate images. If needed, the monitor gives you the option to view in color or black & white as well as flip the image vertically. The F3 monitor automatically detects whether the signal is NTSC or PAL, and you can choose whether to display in either a 16:9 or 4:3 aspect ratio. The F3 monitor far exceeds the F1 monitor offering 1024 x 600 pixels and far advanced sun screen. The monitor comes with a built in Sony NP-F battery plate. The F3 monitor offers versatility at a price point you can't ignore."