After the computer is sharpness and resolution show in three f areas divided:
From Aperture 3.5 to 5.6, the Canon is much more contrast and sharper in the middle. In the corners in shift direction showing two lenses strong coma, the Canon even more pronounced than when Walimex. At Canon, the coma when Canon ie is so strong that the corners seem dull and blurred, sharp drop in image quality from the center to the corners in shift direction, the Walimex is something in the middle of weaker but more balanced.
Overtaken by visor 8 to 16, the Canon the Walimex at the corners and now shows the considerably sharper and better resolved corners in shift direction from aperture 11, the Canon is quite good in these corners, the Walimex reached this level until iris 16 . The Walimex catching up in the middle and reaches stop 11, a similar resolution as the Canon, contrast and subjective impression of sharpness but remain slightly behind the Canon.
At aperture 22 both lenses show significant diffraction losses due to the stronger contrasts the Canon but subjectively continue forward.
Contrasts and colors: The Canon is the high-contrast lens, which makes it also appear sharper. At medium sharpening the display of RAW files acts already over-sharpened, the contrasts act under the extreme conditions in the forest in sunshine harsh and rather unpleasant, the Walimex acts as much more balanced and "good-natured". The colors appear with the Walimex a bit warmer and more comfortable, the difference is slight.
The functionality is pretty much the same in both lenses: tilt and shift function can be compared to each other and relative to the housing twist. Shift and tilt range are the same for both lenses.
The Canon lens activated by a chip the focus indicator, which I also attained by an AF-Confirm-chip on the adapter.
The Canon lens has an automatic diaphragm, the Walimex lens just a simple manual aperture without aperture priority. Here sits the aperture ring when Walimex so behind the focus ring that you can easily also adjusted the focus when adjusting the iris, which is obviously undesirable if you want to dim after focusing. This is m. E. also the biggest shortcoming of the Walimex-lens.
Focusing takes place when Walimex Nikon port just the other way around as the Canon TS-E, each with about 1/4 turn.
The Walimex is slightly slimmer, lighter and simpler in appearance than the Canon.
Conclusion: All things being insubstantial differences, the Canon is slightly sharper and "better", but I'm sure after a few missions that the Walimex makes more beautiful, more balanced images. Like other Samyang / Walimex lenses makes the lens, beautiful, stable picture "painted like". The Walimex has to be a good chance my landscaping lens No. 1.
The half price compared to the original lenses is of course still an argument and so the Walimex Lens is my buy recommendation.
By the way: Until recently, I did landscapes exclusively with Kiev 35mmf / 2.8 tilt / shift at full-frame and this focal length is ideal for completely natural-looking landscapes. The Walimex 24mm / 3.5 tilt / shift is thus ideally suited for the DX format.
Addendum: Meanwhile, I have the Walimex lens used on APS-C and am very happy with it. Much to my surprise the lens at close range is rather better than in landscape photography. Images have to close range of 20cm an excellent quality, even at shutter 4. On APS-C animals can be displayed full frame up to the size of a grove snail, flower or a small mushroom. Compared to the Canon Walimex at the minimum focusing distance represents significantly larger. Probably increases when Walimex the focal length when focusing at close range. This is an advantage and makes this special lens to a real all-rounder.
Due to the short focal length the tilt function can be very subtle, inserted through the soft, unobtrusive Schärfeverlauf very effective but.
The bokeh is very nice behind the focal plane and meets the initial expectations fully, prior to the focal plane but there are donuts, so here is a pretty ugly bokeh. The pleasant Hintergrundbokeh is one of the most important prerequisites for beautiful pictures. Slightly blurred areas forming the lens from how blurred.
Second Addendum: The Walimex 24mm / 3.5 tilt / shift was on vacation for four weeks as "Always-top lens" in front of an APS-C sensor and this has proved its worth, whether for architecture, landscape or macro.
Tip: It is even without a tripod. Working out of the hand is also with this objective not a big problem, just hold the camera horizontally or easily in shift direction inclined and move the lens with loosened fixing screw by hand (shifting) until the cut is right. In no case in the opposite direction tend (at shift upwards so down) which gives ugly images.
