The observable view through a camera lens and the scene that winds up in the photo. A wide angle lens (short focal length) delivers a wide field of view (FOV). A telephoto lens (long focal length ...

The metalens exhibited diffraction-limited performance across a wide field of view of 140° and a remarkably low barrel distortion of less than 2%. In contrast, a reference metalens without ...

Does the kV value that I select for fluoroscopy have an effect on the absorbed dose to tissues in the patient? » Does changing the field of view, or magnification mode, have an effect on the exposure ...