[Full-Frame] This is a very nice lens and I look forward to many years of beautiful images. Before I purchased the lens I was taken aback by a number of reviews that complained about the tilt and shift locking knobs not tightening properly.

To clarify, on page 22 of the owner's manual Nikon states, "The lens does not lock completely by turning the shift and tilt lock-release knobs. This is not a malfunction. Turning the shift and tilt lock-release knobs too tightly to lock the lens or forcibly shifting/tilting the lens when it is locked can damage it."

Okay, all you he-men out there? Firm but not too tight get's the job done.

[24mm] Best used for Architecture, some usefulness for Landscape if you need to Scheimpflug. If you don't know this word you don't need this lens. Best way to correct perspective while putting camera a right level to record scene. Next best thing to a view camera. Good: Great optics, sharp, contrasty and easy to understand. Outstanding build and overall excellent piece of glass on a D800. There is remarkably little distortion for a 24mm lens. Electronic stop down function is clever and helpful. The movements are surprisingly extensive. I rarely have need of tilt function. Not perfect: Slight barrel distortion easily corrected in your raw editor. Knobs are small but if larger would interfere with camera body and certain movements. I classify this as a concession to reality. There is some vignetting at maximum shift at wide apertures but I've rarely needed that much shift on assignment. Stuff you'll want to know: This has manual focus and manual aperture setting. On this lens you set the aperture but focus and compose wide open, the camera (most of them, check compatibility chart) stoops down at shutter release. On the older version of the PC lens (the one without tilt) it was easy to forget to twist the aperture ring after composing and focusing. Few current DSLRs have view finders designed for manual focus. They are small and dim compared to film SLRs of yore. You'll need plenty of light for accurate focus. However, at 24mm inherent depth of field of the optic is great so you won't find it impossible to get acceptable focus if you stop down a couple of stops.

[f/3.5] Aunque su control es totalmente manual (enfoque, apertura), en seguida aprend� a manejarlo. Buen contraste y hermoso color, su desenfoque de forma art�stica es fant�stico. Para un buen enfoque puedes usar el modo Live View de tu c�mara y acercar la imagen. Encantado con la compra.

[f/22] As a professional photographer with wide-ranging photo interests I have wanted to purchase a TS lens for years but was deterred by the intimidating price of the Nikon TS for my limited usage. Fortunately I came across the Rokinon 24mm TS just before embarking on a Fall color excursion to Colorado. Although I had limited opportunities to use this lens, and had it only a few days before the trip, I was pleased to find that the learning curve was very small. Even more pleasing was the resolution quality. My normal go-to lens is the formidable Nikon 24-70 f/2.8 for my landscapes. But in the vastness of the mountain environment it fell short, literally, in the wide angle compositions as did the equally formidable Nikon 16-35 f/4 VR. The most impressive aspect however was the ease of manual focusing and the resulting sharpness, which rivals both the 24-70 and 16-35. I'm now hopefully looking forward to the introduction of a Rokinon 85mm TS. And thanks to B&H expedited delivery the 24 was delivered in time for my trip after ordering it on short notice.

[Nikon F] I purchased the 24mm to shoot Real Estate interiors and would only use it for those jobs. One day I started carrying it around in my walk-about backpack when cruising downtown Indy and found that the other 10 lbs of prime lenses in my bag were pure dead weight. Shooting w this and experimenting w the functions causes you to think differently than w the 14-24 or a really sharp prime. I find using it makes me better at composing and the sharpness can't be beat. I find /8 to be the sweet spot but not by a mile.

[82 mm (Front)] This lens is both useful and great for creativity. To line up the shift rail with the object to be photographed (eg. tall buildings), you press a tiny latch (which may be a little too small and too sticky) and simultaneously twist the lens. With the maximum rotation of 90 degrees, while the lens shifts 2 ways, this means shifting will cover 2 opposing 90-degree wedges. Shifting in the other 2 quarters will require rotating the camera itself. Next you adjust the tilt axis, which starts from whatever angle it already rides through with the previous shift rotation. This is also 90 degrees max, and again by pressing another tiny latch and twisting the outer half of the lens. Shifting will ameliorate the optical distortion typical of tall buildings, which should please architects and real-estate presenters. But if you're keen on playing, there's no stopping you to over-shift on purpose. The tilt feature is the real sell though. Basically it rotates the focus plane (which conventionally is parallel to the picture plane). This rotation can be up to approximately 80 degrees. So for intstance, from a normal standing position, you can get all of a large tabletop, or even a flat grass meadow, into focus. But I like best to fix the focus plane at odd angles, to catch objects in space seemingly at random. In this kind of free plays, turning the focus ring will cause the focus plane to move across the picture, instead of in the conventional far-near direction. I must mention this lens is no kinky boutique gadget, just because it's built for these unconventional features. The images it produces are tack sharp wherever you situate the focus plane. It is great for macro-like applications, with the advantage of extending the DOF by bending the focus plane. And when set back in the normal configuration, it becomes just a normal tack sharp 24 mm prime. (That is, if you don't mind lugging around all that bulk and weight.)

[Manual Focus] This lens is well-constructed and suits my purposes for landscape photography. I'm sending it to Nikon USA so that it can be modified for the shift and tilt to be in the same axis. It's to bad it isn't sold with this arrangement.

[f/3.5] I have used the Canon TS lenses for years.Recently my 24mm lens developed a problem with the filter thread and was difficult to thread filters I use particularly neutral gray for longer exposures. I had read multiple reviews of the Rokinon 24mmTS lens ,some of then rather negative. This lens is excellent, the coverage is a good as the Canon without vigneting ,as indicated by one reviewer. Sharpness is good, color and contrast as good as the Canon. The only negative is the less than solid construction and the smaller controls.These are true negatives and I would wish they will be made sturdier in next generations.

[24mm] No surprises here. Super sharp. The shift lock could be better, but I imagine it's an engineering challenge in such a small space. As it is, I'm afraid of overtightening the tiny knob, and this leaves me hoping the lens doesn't creep down during a vertical shift. And please, Nikon, consider a redesign with independent tilt and shift sections. But I bought this lens aware of the limitation, and it performs perfectly.

[f/3.5] I purchased this lens for a special architectural assignment. The images it produces have exceeded my expectations, and I have no hesitation in recommending it to others.