How to fix the lense of a nikon coolpix s4100?

When I zoom in all the way and look at the circle hole in the lens, there is an area around it with this black plates that expand and retract when you zoom. Part of that is chipped off. The piece is stuck somewhere in the lens, causing the lens to get jammed and struggle a lot to open and close. I can't open the camera to get to the lens, because I cant do anything once I get behind the screen. I have had the camera for about two years and it has been like this far quite a while. How can I fix this.

См. статью: How to fix the lense of a nikon coolpix s4100?

Which camera will perform better in low light / night shots?

Nikon Coolpix P310, max.aperture f/1.8, sensor 1/2.3"
v/s
Nikon Coolpix P7100, max.aperture f/2.8, sensor 1/1.7"
http://www.dpreview.com/products/compare/side-by-side?products=nikon_cpp310&products=nikon_cpp7100&sortDir=ascending
If shot at widest
Which trumps out, the larger sensor or the wider aperture

См. статью: Which camera will perform better in low light / night shots?