The Canon EOS 6D Mark II is a better camera than its predecessor, but how much better is it? If you have a 6D, should you buy a new model? This is explained in detail here: https://www.artlook.us/service/gay-wedding-photographers-nyc/.
Assuming you’ve owned an EOS 6D for several years, it makes sense to buy a new camera if you have the funds. You shouldn’t expect much progress in performance. The Mark II is noticeably faster and offers more enjoyable handling. Its autofocus system is much better, and it also has a hinged touch screen and Dual Pixel CMOS AF autofocus technology. This will play a big role for many photographers. Dual Pixel AF is one of the best face detection and subject tracking autofocus systems for both stills and video.
If you rarely use Live View, the 6D autofocus system will be enough for you. Instead of buying a new Mark II body, spend your money on a new lens. The increase in resolution from 20 to 26MP is not very noticeable in practice. For everyday shooting, the original 6D is still good enough.
Of course, your needs may vary. If you have the opportunity to rent or borrow a Mark II, do it. You may find improvements like the upgraded autofocus system (now with 27 points that fire up to f/8) to be better. Live View with touch screen and Dual Pixel is simply mesmerizing with its precision and ease of use.
I have an EOS 5D Mark III, should I buy a 6D Mark II?
In general, the answer is yes. Swapping the 5D III for the 6D II gives you a faster, lighter camera with (slightly) higher resolution, a much more useful Live View feature, and amazingly accurate autofocus in both Live View and video. Keep in mind, however, that if you’re shooting sports or active movement across the frame, you may be limited by the width of the AF points covering the frame.
One area where the 6D II’s autofocus system outperforms the 5D III is when it comes to photography. The EOS 6D Mk II has 27 AF points that focus on the subject at apertures up to f/8. In the case of the EOS 5D Mk III, only one center point works at f / 8.
The 6D Mark II also has built-in Wi-Fi and GPS, which can only be appreciated by experience with them.
One fact will scare off photographers. The 6D Mark II probably won’t represent a huge step forward in terms of image quality, at least in low light. Whereas the more modern 5D IV offers a wider dynamic range. This indicates that the 6D Mark II is in line with the 5D Mark III.
Another possible point in favor of the 5D III is that the 5D series has gained popularity over the years as a rugged and durable camera, while the 6D Mark II has not yet gained that reputation. However, it is sealed against moisture and dust, so the 6D II can be used for the rigors of travel and outdoor shooting in moderately humid conditions.