Here is the Canon Geek Canon 6D Vs 7D photo comparison with appropriate lenses attached
It comes down to what's most important to you and your photography style.
If you need really fast sequence of photos for high speed sports or action, the smaller sensor is better.
The 8 frames per second shooting capabilities of the 7D will better suit you.
If you shoot in a lot of low light conditions then the 6D is the better choice.
If you are limited in your available dollars to spend you can buy the 7D and have quite a bit of money left over for accessories or lenses.
The actual size of the pixels on the 6D's sensor are quite a bit bigger and are more efficient at collecting light and more of a factor in comparing quality of images than the slight difference in the number of pixels ( 20.9 vs. 17.9)
Money is money. A penny saved is a penny earned. You get what you pay for. All of these sayings come into play. There is a significant difference in price levels for you to own one of these Canon DSLRs.
The 6D feels significantly lighter even though the 7D weighs about 10% more.
The 7D has a pop-up flash. With the 6D, you need to use a higher ISO setting or use an auxiliary Speedlite or compatible flash.
The 6D has a lock on the exposure mode dial to help prevent an accidental change to the wrong camera setting. The 7D does not.
The 6D is a little more menu dependent. The 7D has a bit more external setting controls.
The full frame sensor of the 6D will out perform the APS-C sensor of the 7D, particularly with less noise and better detail in the shadows and higher ISO settings.
The 6D takes SD memory cards and the 7D takes CF. If you have a bunch of cards sitting around, I guess that could be a minor factor in comparing the Canon EOS 6D and EOS 7D.
I think one of the most significant factors to look at is what lenses you own or will need to buy.
The Canon7D's EF-S lenses are smaller, lighter, need less glass and are therefore more affordable. If you get or own the larger EF Lenses, they are compatible with both cameras.
I hope this Canon 6D vs 7D article stimulated your thinking. Good Luck and remember to enjoy your search for the best photography tools and tips.
Canon Camera Geek.
Written by Bruce Lovelace