« Last post by haggie on Today at 07:16:14 AM »
you are right that the build quality and especially the weather sealing also is something to look at. Did not have that at the front of my thoughts yet.
My choice is in fact between either a modern sensor or a state-of-the-art AF system.
Wanting both would steer me towards a FF body, and as I wrote that is no option for me.
Shades are often quite hard when photographing airplanes - and the same with birds.
When photographing airplanes, I saw that the dynamic range of the 70D (that is: the ability to get details back in the shadows) is not great. Quite quickly, noise shows its ugly face. There are some ways to reduce that in post processing, but that is quite limited because is quickly makes an unnatural end result.
Now that I give it some more thought, it is probably best to give preference to a good dynamic range instead of to the ultimate AF system. After all, even with the 70D I usually get at least one or 2 sharp photos in a burst. Increasing that number of sharp photos with a 7D MKII gives me more photos to work on, but they all will have hard shades if the weather is sunny. That means that I just have more-of-the-same exposures, because the sensors of the 70D and the 7D MKII are almost identical in dynamic range. Therefore, replacing my 70D with a 7D MKII would not give me any improvement in the image quality of my final results.
But with better dynamic range I can improve the shades better in post processing, resulting in a better end result. And therefore, this would result in an improvement.
This means that the 80D should be my preferred choice.
Now I think of it, that should have been clear to me much sooner.
Because in the end, the quality of the photo gets determined by the quality of the sensor in digital photography. So preference should go to the better sensor.