Originally posted by JASMAZ77 Ok then, how does it darken the lens? if the converter is between the lens and the front of the camera? is the light still coming through the front of the lens?
---------- Post added 03-11-14 at 08:18 PM ----------
Thank you rawr I have just read the link sent me. In consideration of reading that I think a 1.4x TC will be more suitable and I will have to watch the light conditions and use more manual focus and choose which lens to use it with and how much aperature I will lose. On the other hand the article was written 7 years ago too so lens and auto focus technology have come a long way since then.
As to the "darken the lens" question: The amount of light transmitted is the same as without the TC, but it's spread over a larger area so any given point on the sensor receives less light. You can demonstrate this yourself with a flashlight, er, sorry, a torch. Shine the light at a wall from a few feet away and wallk backwards. The light on any part of the wall gets dimmer, even though the light coming out the front of the torch hasn't changed. This is also the reason you need a different exposure with a flash at 20 feet than at 10 feet.
As to the 7 year old article: Yes, technology has changed, but the laws of physics haven't.