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.
If a lens has two mm numbers on it, for example 17-85mm, this tells you it is a zoom lens. In other words it can take photographs with a 17mm focal length or zoom in all the way to a 85mm length. What does the ratio number mean? You might also notice a number written on your lens that looks like a ratio.irst I'll start explaining what the mm number means. For example on a Canon EF-S 17-85mm f/4-5.6 lens you will see the number 17-85mm written on the side. The mm number refers to the focal length. This is the length or distance from the front of the lens to the camera's sensor.