There is a kind of SLR lens, and the characters and scenes to be shot will show the effect of Q version or doll.

Generally, buildings are standing on the ground. In order to take a complete picture, the camera should be tilted slightly upward. Because the lower part of the building is close to the upper part and far from the upper part, the convergence effect of "the lower part is big and the upper part is small" will be adopted. The lens itself is not deformed, and the reason for this phenomenon is the perspective relationship. Correction: The camera is shooting a building. At this time, the lens angle may be insufficient, and it is necessary to change a lens with a wider angle. For a 35mm camera, the equivalent method is to shoot directly at the target with a lens with the same focal length but a larger viewing angle, and move the film to the reserved position when cutting (actually, the lens translates in the opposite direction). This kind of lens is the "axis-shifting lens", and the principle is as mentioned above.

/view/228999.htm Axis shift lens

/view/2540 102.htm shift axis photography

Such as: canon axis shift lens TS-E? 17mm？ F/4L ￥ 65438+580,000