Here are the Canon EOS R6 II vs. Canon EOS 5D Mark IV and Canon EOS R6 II vs. Canon EOS 6D Mark II comparisons. Like all of the other Canon EOS cameras, the R6 II imaging sensor has a 3:2 aspect ratio. Optionally (mandatory when using an EF-S lens on the adapter), a 1.6x crop can be selected. Other aspect ratios available are 1:1, 4:3, and 16:9. Finally decided that the R6 is the true "similar" to the 6D. It has similar build quality, similar control layout, and is very full-featured. Image quality is the same or slightly better than the 6D, but it's an upgrade in every other measurable way. Seems to me an Eos R would be a step down, and a 5DIV would be a lateral move, not much of an After a 6 EV push, the 5D Mark IV falls further behind the a7R II and D810, but the improvement over the 5DS is pretty dramatic. Digging a bit deeper: the 5D IV shows improvements over the 5DS with even more moderate 3-4 EV pushes, but especially so when files are pushed 5-6 EV. This means you'll see the advantages of the on-chip ADC in the In our testing, the Canon 5D Mark IV performed as expected in the image quality department, with an overall superb showing, especially with RAW files. The 30MP images displayed lots of fine detail Canon EOS 80D vs. Canon EOS 5D Mark II vs. Canon EOS 5D Mark III vs. Canon EOS 6D vs. Canon 6D Mark II vs. Canon EOS 5D Mark IV. Image tagging and tracking modes The EOS 6D Mark II has the EF lens mount, while the EOS R6 Mark II has the advanced, future-focused RF mount. There are currently more EF lenses available than RF lenses, but EF lenses can also be used on the EOS R6 Mark II with no loss of quality or functionality via any of a range of EF-EOS R adapters, which means the EOS 6D Mark II is High-speed continuous. Low-speed continuous. Silent single shooting. Silent continuous shooting. 10-sec self-timer / remote control. 2 sec self-timer / remote control. 6.0 fps. 10.0 fps. Yes (2 or 10 sec) While the 6D2 seems to measure slightly less dynamic range than the 6D, bear in mind that the 6D once had the widest dynamic range of any Canon DSLR. The difference is not visible to the naked eye, and the 6D2 has 30% higher resolution. The 7D2 is definitely an upgrade over a T6, but so is the 6D2. 6ZVME.