What’s New. The 5D series is basically like a relic from an Indiana Jones movie around here, and the Mark IV is essentially the Holy Grail. It brings a new sensor, new processor, new-to-the-series Dual-Pixel autofocus and Dual-Pixel RAW adjustments, 4K video capture, and a touchscreen interface to control it all.

30.4MP Sensor. The 5D Mark IV offers an unmatched balance between resolution and sensitivity. The 30.4MP is a bump up from Mark III’s 22.3MP, while the 5D4’s DIGIC 6+ processor allows for an expanded native ISO range of 100-32,000.

Improved Autofocus. The improved autofocus system’s 61 phase-detect points, 41 of which are cross type, offer a wider array of autofocus coverage down to f/8. The 150,000-pixel RGB+IR metering sensor allows for better exposure and tracking performance.

Dual-Pixel Autofocus. The 5D Mark IV also incorporates Dual-Pixel autofocus, as seen in the Cinema EOS line of cameras and the 1DX Mark II . This system uses phase detection for continuous autofocus and tracking with user-adjustable sensitivity and speed settings. Video shooters can even use the touchscreen rear LCD to rack focus. Oh yeah, and there’s continuous focusing in live view for still shooters!

Dual-Pixel RAW. By capturing information from each of the two “pixels” that make up the sensor’s Dual-Pixel photosites, you can correct microfocus issues, shift bokeh, and reduce ghosting after image capture. Please note that this is limited to use with Canon’s Digital Photo Professional 4.5 software, which isn’t included with the rental due to copyright regulations. However, you should be able to source it yourself fine and dandy via Canon’s website.

4K Video. The Mark IV brings 4K to the 5D line for the first time. It can record DCI 4K at 29.97, 25, 24, and 23.98 fps in Motion JPEG file format (4:2:2, 8-bit). It can record 1080HD at up to 60 fps, and 720HD can go all the way up to 120 fps. External HDMI output is limited to 1080HD uncompressed 8-bit. Audio in and out is available through standard 3.5mm mini jacks.

Refined Ergonomics. The biggest addition to the camera body is the 3.2-inch touchscreen LCD monitor that allows you to pull focus in video mode and make quick adjustments in the camera’s menu system. Other additions include a dedicated autofocus mode selection button and a built-in intervalometer. It has a tank-like magnesium-alloy build and weather sealing to keep out the elements and dust.