Showtime Sets Premiere Dates for Shameless and More. Aug 7, 2017 8:45 PM EDT. Showtime has set the premiere dates for its fall comedies. Shameless will return for its eighth season on Sunday, Nov. 5 at 9/8c. The season will find Frank (William H. Macy) trying to be a contributing member of society and Fiona (Emmy Rossum) discoâ¦ Read more.
Making the world better, one answer at a time. The f on a camera lens is the maximum aperture of the lens. It is sometimes listed as 1:X with X being the maximum aperture.
An f-stop is a mechanism for setting the aperture of the lens, or how wide it is opening to let in the light. There's two parts to it: f and stop. First, the maths. f-number. An f-number is a number in the form f/2.0 which specifies the size of the aperture opening. f refers to the focal length. f/2.0 means the diameter of the aperture opening is the focal length divided by 2.0. f/4.0 means the diameter of the aperture opening is the focal length divided by 4.0.