The 45mm f/2 Carl Zeiss Planar T* is an autofocus rangefinder lens using a Planar design's tremendous potential while adding modern updates.
The Contax 45mm Planar G is a 2nd generation Contax G system lens originally introduced alongside the G2 body, it's also useable on G1 bodies that have been modified to adjust the finder correctly. The 45mm G produces excellent sharpness so many photographers reason that they can crop the image some if needed.
The T* multi-coated optics produce excellent contrast and color reproduction. The bright f/2 maximum aperture greatly helps shooting in available light and titanium metal construction keeps weight to just 150g. The light bright lens is superbly easy to shoot hand held and carry around all day.
The 45mm G's high quality Zeiss optics coupled with G system autofocus and auto exposure capabilities provide performance and responsiveness especially wonderful for photojournalism and documentary photography; this remarkable implementation of a versatile focal length is also superlative anytime rich tonality and superior clarity are a primary concern.