You may like to read about the M8 problem and Leica's solution.
An IR filter in front of the lens and firmware.
Source Popular Photography
http://www.popphoto.com/popularphotographyfeatures/3403/marooned-leica-lovers.html
An IR filter in front of the lens and firmware.
Source Popular Photography
http://www.popphoto.com/popularphotographyfeatures/3403/marooned-leica-lovers.html