What the Numbers on your Lens Mean This is one that you may or may not have on your lens, most newer digital lens do not have this as the aperture is set and controlled by the camera body now. Back in the days of film and manual focus lenses, the shutter speed was set on the camera and the aperture was set on the lens. Manual lens markings? - PentaxForums Jul 05, 2009Is there a FAQ or some beginner's guide how to undertand the different markings on a manual lens? For example on my Vivitar 70-210mm f/2.8-4 (Komine) lens the other apertures are written with white while aperture 8 is with green.