Question

Which of the following statements are true concerning the image quality problem called "lag".

1. inherent problem of shortcoming of vidicon television cameras
2. brightness at periphery of image takes longer to manifest on the screen
3. appears when TV camera is moved rapidly during a fluoroscopic procedure
4. occurs because it takes a certain amount of time for the image to build up and decay on the TV cameras target

Answer 1

Lag is an image quality problem that can occur in television cameras. It is characterized by a delay in the manifestation of brightness at the periphery of the image. The lag is caused by the time it takes for the image to build up and decay on the TV camera's target.

Step-by-step explanation:

The lag in image quality is a problem that can occur in television cameras. It is not specifically limited to vidicon television cameras, as mentioned in statement 1. The lag occurs because it takes a certain amount of time for the image to build up and decay on the TV camera's target, as stated in statement 4. Statement 2, which claims that the brightness at the periphery of the image takes longer to manifest on the screen, is also true. However, statement 3, which states that lag appears when a TV camera is moved rapidly during a fluoroscopic procedure, is not necessarily true.