Ultimate shoulder adapter

The best partner of Sony PMW-300 camcorder

The ST-7S300 is the dedicated shoulder mount rig for Sony PMW-300 camcorder, which can realize very comfortable & professional operation style.
It quickly increases the camera picture stability and can provide many benefits for operators as like a standard shoulder mount camera.

Great weight balance on shoulder

The most important feature of any shoulder rig is to realize the well weight balance even with handy type camera.
ST-7S300 is designed to establish the most comfortable weight balance with PMW-300 camcorder and a large type Lithium Ion Battery.


Manual lens operation

PMW-300 has the remarkable feature of lens exchangeable capability, which is very unique as handy type camcorders.
It is great for real professional camera operators that they prefer to use their own manual type exchangeable lenses.
The problem in this configuration is the worse weight balance with heavier lenses, so, the ST-7S700 can be the best solution since V-mount battery can be used together, which can realize as same weight balance as shoulder type camcorders.

Soft type shoulder pad

Combining Comfort & Simplicity – An integrated rubberized shoulder pad molds to any shoulder without slipping and maintains excellent balance and alleviates pain from the painful pressure points that are common in harder shoulder pads.


V-mount battery operation

V-Mount Battery Terminal – A V-mount battery attachment further expands your power options and allows a number of 3rd-party camera accessories to mount directly to the back-end of the rig.

A 12VDC output (4-pin XLR-Female & D-Tap) is available to supply power to camera accessories and lights.


Power switch

The DC power switch is available at the location of the front and inside position, which is also as same as shoulder type camera.
And there is a LED lamp which can show the DC power-on with green lamp, and also it can indicate the battery empty with blinking-RED when the DC voltage of the battery is going down than the proper level.

Direct attachment onto VCT-14 type tripod adaptor (VST-14 is the NIPROS model name)

Quick Release Benefits – The ST-7JS300 is supplied with a mating plate for a quick release tripod plate, allowing it to attach directly to popular quick-release tripod adapters (compatible for Sony VCT-14).

BNC terminals

Three BNC terminals are useful for quick-release of the cables, or to prevent the mechanical break of the original BNC connectors on the camcorder.


Handle attachment just fitted to PMW-300 design

On the top handle which shape is just fitting to the PMW-300’s hand grip, there is “window” to see IrDA remote signal detector and Tally indicator, and also there is a ¼-inch and 3 x M5 screw holes where any accessories can be attached.


Easy to carry

A ST-7S300 product includes 1 x Main body, 1 x handle attachment and the DC supply cable (same one as DC-EX3).
These can be built with PMW-300 very easily just with a coin. This can realize very compact transportation, for example in case of travel by flight, PMW-300 itself should be hand-carried to the cabin in compact bag, and then other accessories including ST-7S300 can be checked-in.

Studio operation

By adding more options for zoom & focus demand and large type Viewfinder, PMW-300 and ST-7S300 can work like studio type camera.
This is great benefit for customers as the most budgeted solution, since one PMW-300 camera can work for multi purposes.



  • DC Input: 12 V DC IN: XLR 4P(Male)x 1/V-mount Type Battery Shoe x 1
  • DC Output: 12 V DC OUT(MAX 3A): XLR 4P(Female) x 1*, CAMTAP x 1*/12 V DC(requlated): Mini 4P(Female) x 1**


  • Extension terminal: BNC-BNC x 3
  • Camera screw 1/4 inch: Camera fixing screw x 2/Handle fixing screw x 3
  • Shoulder pad: Just fit shoulder pad
  • Operating temperature: 0°C to 40°C
  • Storage temperture: -20°C to 60°C
  • Outside dimensions: 110 x 239 x 349 mm(W x H x D)
  • Weight: approx. 1.45 kg

*: The output voltage from the XLR 4P connector and CAMTAP will be varied according to the battery voltage.
Even if one of these outputs is accidentally shortened,the protection circuit can allow the Mini 4P(Female) connector to continue the power supply to PMW-300.
**: 12V DC output from Mini 4P(Female) connector Pin Assignment.
1: 12 V DC(G)
2: NC
3: NC
4: 12 V DC(+)