Archive for battery

Some ENG setups with the GH4 and 2 digital audio recorders

Posted in Audio, Photojournalism, Reviews, Video with tags , , , , , , , , , , , , on August 11, 2015 by William Hooks

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DR-70D DAR below GH4 camera on tripod

DR-70D DAR below GH4 camera on tripod

MS (mid-side) microphone capsule option on Zoom H6 DAR

MS (mid-side) microphone capsule option on Zoom H6 DAR

side view showing connections for digital audio recorder positioned below camera

side view showing connections for digital audio recorder positioned below camera

above-camera setup for DR-70D using 12" rail on hot shoe, and 2 wireless Audio Technica mic receivers

above-camera setup for DR-70D using 12″ rail on hot shoe, and 2 wireless Audio Technica mic receivers

DSCN2364The idea here is to be able to record to one or more cameras and record audio separately =dual system audio, later aligning the sound and video files while editing. I use Red Giant Plural Eyes Express for this job, it’s easy and automated.

I’ve shown two audio options, one with wired lavalier mics into inputs 1-2 on the Tascam DR-70D DAR connected below the camera and the other with the DAR mounted on an adapter above the camera, connected to wireless mic receivers.

The other DAR (Zoom H6) is used here as a hand-held microphone close to the subject, recording backup tracks; one could easily add a shotgun mic track here, for example, or one of the lav tracks if desired. I sometimes use the MS mic capsule in this setup because it’s simple to pick up my interview questions and the corresponding answers with that mic, place close to my side and less than 2 feet from the subject out of frame.

I power the Tascam whenever possible with external sources- either AC or when not available, by use of a brick battery via USB port with 5v delivered to the 15′ extension cable, then to the dedicated recorder USB cable. This is due to the lackluster internal battery life from the DR-70D.

Be sure to download the Tascam ‘s reference manual online if you get this unit- the supplied documentation is pathetic.

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Battery options for powering the GH4, lights, Zoom H6, and monitor

Posted in Captain's Personal Log, monitors, Photography, Photojournalism, Reviews, Travel, Video with tags , , , , , , , , , , on July 20, 2015 by William Hooks
Switronix P-tap to GH4 power cable

Switronix P-tap to GH4 power cable

Switronix P-tap to 4-pin power cable

Switronix P-tap to 4-pin power cable

LP90S battery as counterweight, connect to GH4 with power cable on shoulder rig

LP90S battery as counterweight, connect to GH4 with power cable on shoulder rig

closeup of battery, P-tap connection and second P-tap port located on mount plate

closeup of battery, P-tap connection and second P-tap port located on mount plate

The Zoom H6 digital audio recorder is powered from the accessory USB port on the battery, shown above.

It’s a good idea to not allow these batteries to be uncharged for long periods because of their self-discharge property; I mark them each time they’re charged, and aim at less than 6 months before recharging.

And double check to ensure that the terminals of the P-tap connector are properly aligned to the corresponding terminals of the battery plate- if not, there’s risk of short-circuiting the cable (I’ve done it – ONCE).