I've just bought a Sony NEX 5N - it came with a 16mm Pancake lens and the standard 18mm to 55mm Zoom Lens I've seen on eBay & Amazon there might be teleconverters that fit the standard 18mm to 55mm lens If so does anyone have experience using one and some example photos of a photo taken at 55mm and the same photo using a teleconverter? I'd especially be interested in seeing example portraits of people using such a device. If so please do post. One of the reasons I'm interested in a teleconverter is to get closer but without having to change lens, especially if the area I am in is dusty and I don't want to open up the sensor to dust. Ideally what I'm looking to do is take candid photos of friends & family, so being able to stand back at weddings, outdoor picnics, etc would be nice. I'm planning to take my camera in the future to places like Africa / India where they have very fine dust in the air. So for now just looking at the idea of a teleconverter to get me into the focal range I like for taking candid shots. Also will the autofocus still work with a teleconverter or will it cause problems?