canon Lee wrote:
I am upgrading to a FF 6D and have all the compatible lenses. Since this is an entry level FF and not the 5Dmk3, I realize cuts have to be made somewhere. The cut that I am concerned with is the 11 point AF zones, as well as no CF card. Any experience with this camera and the focusing?
I am not sure I'd call a 6D an "upgrade", going from 7D. In many respects it's more of a downgrade. You're basically going from top-of-the-line APS-C to entry-level FF.
The 6D has 11 AF points (compared to 19 in your 7D).
6D is -3EV, f5.6 capable at the center cross-type AF point only. The other ten AF points are single-axis type and far less useful for moving subjects or in low light situations. (7D's AF is -1EV, f5.6 capable at all 19 points, with diagonal cross-type at the center).
The 6D has a fixed focus screen (not active matrix, like 7D's). 6D has two focus "patterns": All Points/Auto, Single Point/Manual. (7D has five patterns: All Points, Single Point, Spot Focus/Single, Zone and Expansion. 7DII now has two Zone and two Expansion.)
7D uses a discrete chip to run the AF, much like 1D-series cameras. This is in addition to dual processors that handle image files. The 6D uses a single processor for it all... both for AF and image handling. This makes 6D a much slower shooting camera. It's AF is nowhere near as good as 7D's for speed of acquisition or tracking movement.
One thing 6D truly excels at is low light shooting... both because of it's comparatively low density image sensor and the extra low-light sensitivity of it's center AF point (5DIII, 7DII, 80D now all have similar AF sensitivity).
7D uses Compact Flash and 6D uses SD memory. So, you might need to buy new memory cards, but prices are pretty favorable. Otherwise, it's sort of a wash, CF vs SD memory. In the past, CF memory was bigger and faster. But that's no longer the case. SD memory has largely caught up to CF performance.
Overall, though, the 6D is a much slower shooting camera than the 7D, which has a shorter shutter lag and can do up to 8 frames per second continuous shooting and buffer around 25 RAW files before it needs to pause. 6D shoots at 4.5 frames per sec. maximum and can buffer 17 before it needs to pause.
6D is predominantly plastic and has a control layout similar to 60D/70D (such as multi-directional buttons instead of a "joystick" like 7D and 5D-series use).
7D is magnesium clad and better sealed against dust and moisture. In fact, 7D is slightly larger and heavier than 6D.
6D has built-in GPS and WiFi. 7D does not (separate WiFi and GPS modules are available for it).
6D doesn't have built in flash. 7D does. Neither camera has an articulated LCD screen.
They really are somewhat opposite cameras.... designed and built with very different users and purposes in mind. 7D is a "sports/action" camera and, when it was intro'd in 2009, the most pro-oriented APS-C model that Canon had ever offered. 6D is a "landscape/portrait" camera and the most affordable, entry-level oriented full frame camera Canon has offered to date.
Which type of user are you? If you shoot sports/action a lot... better stick with the 7D. If you shoot landscapes and portraits or are looking for very low light capabilities, the 6D is a good choice.