The advent of video functionality found in today's HDSLR and compact system cameras has also coincided with the growth of professional pocket recorders that can produce very high-quality sound, allowing budget-conscious and independent film makers to capture what is known as dual-system sound. Sound is recorded to both the recorder and from the recorder to the camera as an aid to synching the audio in post production. The issue is that often the output of the recorder is too "hot" for the microphone preamp of the camera.
The LN2MIC-35DB-3 from Sescom is an elegant solution for interfacing the Tascam DR-100 with Canon, Nikon and Panasonic cameras (the camera must have a 3.5 mm input - older Panasonic GH cameras have a 2.5 mm input that requires a different cable). The three-foot long cable features a -35 dB L-pad attenuator that reduces the professional line level output (+4 dBu) of the Tascam's audio output to match the camera's preferred microphone input level.
The cable is designed with the proper impedances to assure maximum voltage transfer and low noise operation. The cable shield is isolated at the camera end to prevent shield noise from directly coupling into the camera connector ground. All resistors values are 1% metal film to assure similar voltage attenuation between the stereo inputs. Cable ends are labeled for proper connection.