Key features of the Canon EOS 6D:

1. 20.2 Megapixel Full-Frame CMOS Sensor: The 6D features a full-frame (35.8 x 23.9 mm) CMOS sensor with a resolution of 20.2 megapixels. The full-frame sensor allows for better performance in low-light conditions and provides a shallower depth of field.
2. DIGIC 5+ Image Processor: The camera is equipped with the DIGIC 5+ image processor, providing fast image processing, improved noise reduction, and overall high-quality image output.
3. ISO Range: The 6D has an expandable ISO range of 50-102400, offering excellent low-light performance and flexibility in various lighting conditions.
4. Full HD Video Recording: The camera can record Full HD (1080p) video at various frame rates, and it includes manual exposure control during video recording.
5. 11-Point Autofocus System: The 6D features an 11-point autofocus system, which includes a single cross-type point in the center. While not as advanced as some other models, it is still effective for many photography scenarios.
6. 4.5 fps Continuous Shooting: The camera has a continuous shooting speed of 4.5 frames per second, making it suitable for capturing action and fast-paced scenes.
7. Built-in GPS and Wi-Fi: The 6D is one of the earlier Canon models to include built-in GPS for geotagging images and Wi-Fi for wireless image transfer and remote control using a smartphone or tablet.
8. 3.0-inch Clear View LCD Monitor: The camera features a 3.0-inch LCD monitor for image playback and menu navigation.
9. Weather-Sealed Body: The 6D has a durable construction with weather sealing, providing some level of protection against dust and moisture.
10. Single SD Card Slot: The camera uses SD/SDHC/SDXC memory cards and has a single card slot.

The Canon EOS 6D is a good option for photographers looking to step into the world of full-frame photography without the higher price tag of some professional-level models. It’s suitable for a wide range of photography, including landscapes, portraits, and low-light situations. Keep in mind that since its release, there have been newer models introduced, so it’s a good idea to consider the latest options based on your specific needs and budget.