Nikon SLR Cameras

How to find out what the Maximum Aperture is on my camera lens?

MURF
MURF

This is all the info I have on the lens:

SUN ZOOM LENS FOR NIKON 85-300mm/1:5 MACRO

I want to know what number should come after the F/

Jim A
Jim A

The specs are normally printed on the lens. If not there some documentation should have come with it.
Otherwise perhaps these folks can help.
http://www.bhphotovideo.com/...video.com/