The camera Canon 5D not strongly differs from the Canon 5D Mark II.

1

I marked it with color circles:
— yellow, the moved buttons
— blue, the buttons which disappeared on new model
— red, the buttons which appeared on new model which aren’t present on the old one

Buttons.
The “Basket” button not strongly moved and in any way doesn’t influence on convenience of use.
The “Jump” button fairly left. It was not so necessary.
Appeared the “Style Choice” button, but, probably, not forever. I personally generally don’t use styles and don’t advise you to do it.
“LiveView” button is the very useful innovation. In particular, it allows to be focused precisely directly on a matrix which has no problems about the front / back focus.
The AF-ON button — the autofocusing start button. It is useless button.
Total, the real difference in available or absence of the LiveView mode. It is quite possible to do without it if you have lenses under your camera.
There is still a difference in the amount and quality of the LCD screen. On Canon 5D it is 2.5″ 230k pixels, and on the Canon 5D Mark II it is 3″ 1040k pixels. A difference in photo viewing is essential. Whether on the small screen it is more difficult to understand whether you got to focus that promoted also by a low screen resolution.
I promised not to stop strongly on technical details so we pass to pictures detailing.

Pictures detailing
Shooting in the RAW format, a sharping in the converter (Adobe Camera Raw) it is disconnected, noise suppression too. Installations for pictures from different cameras are identical.
I used for the test Carl Zeiss Makro-Planar 50/2 ZE and Carl Zeiss Distagon 25/2 ZE. One of the best lenses in a line of the Carl Zeiss for 35mm reflex cameras.
We will begin with Carl Zeiss Distagon 25/2 ZE, as the most sharp lens.

Carl Zeiss Distagon 25 2 ZE

Both lenses are in perfect optical and technical condition. Are on sale, by the way. Due to future purchase of Carl Zeiss Otus 55/1.4.

Left: Canon 5D, right: Canon 5D Mark II

Left: Canon 5D, right: Canon 5D Mark II

On the camera Canon 5D Mark II there such artifacts are not present. Such color artifacts appear when the matrix reaches a limit of the resolution capability. It just that parasitic signal which shall filter Low-pass filter.

Conclusion:
— low-pass the Filter passes part of a parasitic signal, it is beyond the a matrix resolution. So it doesn’t reduce the useful resolution
— the matrix resolution of the Canon 5D Mark II after all is higher, than at Canon 5D, though is not insignificant.

In a picture it is possible to look for fragments where Canon 5D concedes to the Canon 5D Mark II on resolution. But it is visible only in case of the strong increase and isn’t obvious at all when opening a picture on the full screen (I have a screen resolution 1600×1200).

Carl Zeiss Makro-Planar 50/2 ZE

Carl Zeiss Makro-Planar 50 2 ZE

     Left: Canon 5D, right: Canon 5D Mark II


Left: Canon 5D, right: Canon 5D Mark II

Here again it is visible that Canon 5D already reached the maximum on resolution by moiré availability, and the Canon 5D Mark II only comes nearer to it (but the moiré is still feeble).
But how after all to use bigger resolution of the Canon 5D Mark II more effectively? Let’s try less honest method of a resays — ImageJ. It saves all detailing in case of reduction, but also adds the little. Slightly, but it is quite noticeable. Therefore it isn’t recommended to reduce the geometrical repeating elements, but it is perfectly suitable for a landscape.