post by ableh

The Canon TS-E 17mm f/4L (around $ 2,499) is a unique and never before has such an extreme tilt angle shift lens wild / was available on a digital SLR.
Kudos to Canon for the construction of such a lens is a revolutionary exotic “first”. In early 2010, Nikon has nothing comparable, most Nikon tilt / shift being the 24mm f/3.5.
Architecture and landscape photographers in particular should be the review of this lens.
A major overhaul is in DAP as compared to the review of the Canon 17-40 and 16-35 zooms.
Solves problems without any objective can
The 17/4L Canon is expensive, but if I buy a lens tilt / shift, it would probably be my first choice because it is unique. Although expensive, it is a great value, because no other lens offers its capabilities.
The displacement capacity and low distortion of 17/4L architecture means that shooters have a very powerful tool at their disposal to create professional quality images. Landscape shooters will also benefit, with the possibility of moving away distractions and control depth of field through angle.
The ultra-wide viewing angle lets you take pictures of small spaces in a way that has hitherto been impossible without a camera. Think inside buildings (kitchens, churches, etc.), the exterior architecture, etc.
The Canon 17mm f/4L is reviewed in depth in DAP.
A standard (not change) ultra fisheye could be used with the correct software perspective, but with a large quantity of the harvest and the loss of resolution.
offers tilt Canon’t change /
Canon lenses available tilt / shift a number of years, including the f/3.5 24mm, 45mm f/2.8L f/2.8 L and the 90mm. In 2009, Canon introduced the 24mm f/3.5L II and 17mm f/4L.
Build quality and ergonomics
Build quality is very high. The 17/4L is almost exactly the same size as the TS-E II 24/3.5L, that is to say that this goal is fairly large, in agreement with the tilt and shift functionality.
The 17/4L weighs with sunscreen and hats to 897g (2 pounds). By comparison, weighs 815g and II 24/3.5L original weighs 625g 24/3.5L. This extra weight is not relevant in light of its purpose-built features, kudos to Canon for making the lens big enough to do the job well done.
There is no sun visor. This is very close to a fisheye rectilinear reflect the functions of slope and displacement at 17mm.
Buttons and controls
I found the tilt and shift very easy to use. They are much improved over the (original) Canon TS-E 24/3.5L. The issues I found are a bit tight when rotating squeeze past the viewfinder on the Canon 5D Mark II.
The 17/4L offers an amazing 12mm of passage, traditionally the absolute maximum for longer focal lengths, it is surprising to see it available on a 17mm lens! One would have expected and readily accepted a reasonable limit of 10mm or even 8mmm the shift, but to offer 12mm is amazing.
The tilt mechanism can be rotated to any angle independent shift, allowing an unprecedented versatility, something simply not possible with a Nikon tilt shift lens /, although this offer has SuperRotators Hartblei possibility first. It is easier to use Canon’s movements due to the smaller lens and front / rear shift mechanism.
Examples
The comprehensive review has many examples of much larger sizes. Examples of features are below.
The benefit change
The shift function can eliminate the disorder, or be used to “glue” a picture for a better resolution.
Not shown is the use of tilt, which may distort the plane of sharpness of the depth of field much more.

Unshifted (zeroed)

Shifted up (“rise”)

Stitched image, approximately 30 megapixels
Conclusions
My full review of DAP covers much more, including vignetting, distortion, flare and examples.
The 17/4L is unique in being both an ultra wide angle and tilt of the lens / delay, so some photographers could legitimately consider a camera accessory for the lens.
Based on what I observed in actual field shots, and its unique capabilities, I never hesitated to give the 17 / 4L my highest recommendation.
You can get the B & H Photo 17/4L, thank you for using these links.
See also my list of recommended gear and Canon lenses, and the pages of speed.
Learn more about Canon lenses
For in-depth reviews of lenses that fit Canon cameras (Nikon and others), subscribe to Diglloyd Advanced Photography (DAP).
DAP is not only about the lenses, these cameras and technology and to better images, written to be affordable for beginners, but valuable for professionals. The new material is constantly added, so sign up now!
Learn more about the Zeiss ZE for Canon
You can read an overview and mini reviews here. For in-depth coverage on line Zeiss ZE, see the Guide Zeiss ZF/ZF.2/ZE.
The guide has many examples of a much higher resolution, with real-crop pixels for each objective, in most cases, several pages of examples per glass. The new material is added regularly said the guide, so sign up now!