Le mécanisme de bascule se compose d’une vis noire qui permet de desserrer le mécanisme on a l’or sune latitude de 8° pour la bascule dans les deux directions. L’objectif est équipé d’une bague d’ouverture sans clics et d’une bague de mise au point bien amortie La qualité de construction du TTArtisan 50mm F1.4 Titl est très bonne. Distance de mise au point minimale : 50 cm.There is a second screw (silver) a the bottom to control the rotation of the lens by 15° : indeed you could tilt let or right but also up or down if you change the rotation by 90°, or in diagonal if you switch by 45° ! You can easily readjust and put back to original position in less than 1 second if need be So usable but it does not allow to set a precise angle On high end tilt function the button is controlling the tilt degree by degree. if you unscrew it you can tilt at any position then lock to fix it. The (black) screw mechanism for the tilt is a lock. The TTArtisan 50mm F1.4 Tilt quality is very good, with a clickless aperture ring and and well dampened focusing ring ou au contraire d’isoler un objet dans une étroite zone de netteté en corridor, c’est l’effet anti-Scheimpflug.

en effectuant une bascule, le zone de netteté bascule également ce qui permet par exemple de mettre plusieurs object non parallèles au boitier dans une même zone de netteté (image centrale), c’est l’effet Scheimpflug.normalement la zone nette est parallèle au capteur (image gauche).or if you tilt in the other side to reduce the place in focus to a tiny corridor = Anti Scheimpflug effectĮn basculant (rotation) l’objectif par rapport au boitier, on a un impact sur la zone de netteté.if you tilt the lens the place of sharp focus is also tilted this could help to put in focus several objects not parallel to the lens (middle image) = Scheimpflug effect.normally the plane is parallel to the sensor (left image).La Bascule et le décentrement peuvent être expliqué par les théories mathématiques de Theodor Scheimpflug, initialement developpées pour corriger la photographie aérienneĮn changeant l’orientation de l’objectif par rapport au plan film, il a remarqué qu’il pouvait changer la perspective de l’imageīy tilting the lens (rotation) from the body you have an effect on the plane where your subject is in sharp focus Tilt shift can be explained by the mathematics developed by Theodor Scheimpflug, initially designed to correct aerial photography.īy changing the angle of the lens relative to film of the camera, he noticed he could change the perspective of the images Maybe.1 Presentation 1.1 How does tilt shift lens work / Comment fonctionne la bascule et le décentrement I honestly don't know if I'd buy a TS even if I had a limitless equipment budget. In what architectural photography I've done, I've not had difficulty (nor experienced inadequate image quality) by using conventional ultrawide lenses and doing even moderate (10 or 20 degree) perspective corrections in postprocessing. awkwardness in postprocessing manipulations) could easily be a draw. I would argue that the image quality issues (awkward lens design vs. On the other hand, I would argue that TS lenses do have one disadvantage of having to support a very large image circle with compromises to the optical design elsewhere (e.g. If you need the tilted focal plane, or if you're REALLY, REALLY serious about perspective correction on a daily basis (because the lenses are quite expensive), you might consider a TS lens. He and others do have a point about tilted planes of focus, though. Ted, I agree with most of what my good friend JDM has said, but the image degradation isn't so severe (in my experience) as to make postprocessing perspective corrections that bad.

Tilt shift focus lens