The shift feature of a tilt-shift lens, as the name implies, allows the lens' optics to shift in relation to the image sensor. Notice the dramatic change in the plane of sharp focus in the images below. Let's take a look at some tilt examples from the TS-E 24L II review, all taken at f/3.5. This technique is used to make cities look like scale model replicas when photographed from elavated perspectives. ![]() That means that everything from the front to the back of the image can be in focus even while using a moderately wide aperture, with areas left and right of the focus area gradually becoming out of focus.Īlternately, by tilting the lens up or down, you can accentuate the effect of limited depth-of-field at a given aperture. However, by tilting a lens left or right, you change the focal plane from parallel to approaching-perpendicular to the imaging sensor, with the result of the plane of focus running vertically through the frame (unless the rotation feature is used). That means that if you focus on an object 4 feet away with a normal lens using a moderately wide aperture, everything from left to right will be in focus at your focus distance of 4 feet, with areas in front of and behind the focus point gradually becoming out of focus. In a typical lens, the plane of focus runs parallel to the sensor. While that may sound intimidatingly complicated, the important takeaway is this – the tilt feature can dramatically change your plane of sharp focus. The tilt feature of a tilt-shift lens takes advantage of the Scheimpflug principle, which decribes a situation where the lens plane is no longer parallel to the image plane (or image sensor, in the case of DSLRs). With that out of the way, let's see what advantages the tilt and shift features can do for us.
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