The 135 lens is probably not a Super Multi Coated version. Most of the Super Multi Coated screwmount lenses have an aperture coupling for the Spotmatic F that stops down the lens when metering or shooting. With other Takumar or Super Tak lenses, you have to manually stop down.
Cedric Milan wrote: > Hello, > > I've recently acquired a SPF with an SMC 55mm lens and shot a test roll to > make sure things worked as advertised. From what I could tell things worked > well with the meter giving me accurate readings for 125 ISO film. I then > acquired a SMC 135mm lens and shot another test roll, this time in color at > ISO 100. > > 1) I noticed this time that the meter readings never dipped to the > underexposed area in the finder, no matter what the setting. > > 2) Most if not all the pictures were under exposed. > > Other than bad eyesight or stupidity, what are some reasons that the meter > would give erroneous readings in regards to exposure? (I have read that > stray light can enter from the eyepiece, however I've tried to emulate this > and it does not effect the reading). Might I have a physical camera issue? > The meter reacts consistently no matter what the lens. > > Thanks for your help, > > Cedric Milan
