Hello jelb0, and welcome to the friendly Camera Labs forum!
To enjoy your stay here please have a look at the house-rules
There is already one hint there for you, and I quote from the rules: "animated graphics can prove annoying [...] we encourage static images".
So could you please replace your avatar by a non-animated version?!
As to your question: No, the metering system adapts the automatic
exposure to any fluctuations in transmission of any lens. This is the same when you put a dark filter in front of the lens: the automatic will compensate for this.
Only if you manually
expose this lens and compare it to e.g. the 35/2.0D or 35/1.4G at trhe same exposure you can see that less light is transmitted to the sensor.
Thomas (beware: Nikon-fanboy and moderator!) My Lens Reviews
, My Pictures
, My Photography Blog