redrock micro


Dynamic camera movements can really increase the value of your production, but also requires more man power (and budget). The ideas within this article are based on setting up a second camera on a Video Slider without having a second Camera Operator (completely unattended). This 'B' camera angle offers dynamic movements so that you can cut away to the footage when needed. This is an excellent idea and a few companies are already on the ball with new products (coming soon).

First up is the Kessler Parallax system that offers a mechanical Parallax panning motion to your video head as it tracks left and right. Neat trick, but to get this fully automated you'll have to tie in to the Kessler Oracle system, which not only adds additional cost in the end, but extra equipment to assemble during production. More info at

Next we have the RedRock Micro One Man Crew. This motorized slider offers a curved (Parabolic) track to keep your subject in focus as it moves left to right (and back again). Completely silent with options to set a limit on range, and control speeds. The best part is that it is an all in one solution that's quick to set up and quick to store away. Starting at $1500 dollars (seen here), it carries a decent price tag, but it will save you from hiring an extra person to man a sliding camera. After finishing this article, you may come to realize the price to be very reasonable. More info at

find-price-button Buy- RedRock Micro One Man Crew Motorized Parabolic Slider

Now i've been asked several times if this was something that could be built at home (a.k.a DIY). Here i'm going to introduce a very basic concept on how i've managed to accomplish the same 'ping-pong' / 'back-forth' effect on a cheap DIY motorized slider kit (seen here) with an additional $10 dollars worth of switches, wiring, and a relay, and absolutely no programming. It's basically a simple and dumb electro-mechanical system.

Unmanned, unattended, looping, automated, it all sounds pretty good. Yet you can see how this basic system fails to provide many of the 'Smart' features of the more expensive products coming to market. On the flip-side, one advantage is that with this basic circuit one can expand this idea outside of just a typical slider. (Yes i'm already working on those ideas).

First Test - Building the Circuit Automated Looping Motorized Slider

Here's a schematic of my layout. You'll notice how each side of the motor has both negative and positive from the battery, but only one set is active from the DPDT.
Click for Larger Version

How It Works:
Two 3 Pin NO+NC Momentary Micro Switches (as found here) at each end reverse the polarity of the motor each time they are triggered.

DIY Slider micro switch 3 pin NO NC
Example of 3 pin NC/NO Momentary Micro Switch

A 12V DPDT Relay (as found here) is either 'Always ON' until the slider reaches the opposite switch which drops power to the relay.

12V DPDT Relay DIY Slider Motion Control
Example of 12V DPDT Relay with Socket Base

In one direction, the relay is technically 'STUCK ON' by way of a tricky little feedback loop in the circuit. To turn the entire slider on or off, i'm just using the switch from the battery. In this example, i'm not using a speed controller, but one can easily be added.

[Update] If you have trouble following the schematic, I have another article with an easier way to create this setup. Others have successfully got their own sliders working. Check out the other article (found here).


Here's a few more BlackMagic Pocket Cinema Camera related tidbits of information. If you're looking for another inexpensive option for SDHC media, the Transcend 16GB/32GB SDHC 600X UHS-I (found here) / or the the Transcend 64GB/128GB SDHC 600X UHS-I (found here) media seems to work.

[Update 11.06.13] There are mixed experiences on some Transcend Cards experiencing dropped frames. Transcend has yet to respond to the comments.

transcend 16GB 600X blackmagic pocket cinema cameraTranscend 32GB 600x SDHC BlackMagic Pocket Cinema Camera
find-price-button Transcend 16GB/32GB SDHC 600X UHS-I

find-price-button Transcend 64GB/128GB SDXC 600X UHS-I

If there is one single lens to choose for the BMPC, I would have to go with the Sigma 18-35mm F/1.8 lens. This lens can maintain that constant F/1.8 aperture through it's focal range crowning it as the 'World's Fastest Zoom Lens'. It's obvious why this lens has been on constant backorder since it's release.
Sigma 18-35 LiveLens Redrock MFT GH3 Pocket Cinema
find-price-button Sigma 18-35mm F/1.8 - B&H

Sigma 18-35 LiveLens Redrock MFT GH3 Pocket Cinema
find-price-button Sigma 18-35mm F/1.8 Canon - Amazon (in stock)

The Sigma 18-35mm is available to fit a variety of cameras, but unfortunately it's not available in a direct MFT (micro-four thirds) mount. So to control the aperture you'll have to look into something like the Redrock Micro LiveLens MFT Active Lens Mount.

Without power, it's a high quality EF to MFT lens adapter to be used with manual lenses, but when powered up it can control the aperture settings in any electronic EF Lens. A must have for anyone who shoots with Canon EF lenses on MFT cameras like the BlackMagic Pocket Cinema Camera, MFT Cinema Camera, or even the popular Panasonic #GH3 (currently on sale).

BlackMagic Pocket Cinema RedRock Micro LiveLens EF MFT Adapter
find-price-button RedRock Micro LiveLens EF MFT Adapter - via B&H