Roller bearing sliders have a love/hate relationship. Some people love the smooth no friction action, and some people hate the inconsistencies they might get without friction. Thanks for Martin for tipping me off on this review. YouTube member AYFilms gives us a review of the Camtree Micro Dolly. We've all seen IGUS Drylin based sliders, but with this Camtree Micro Dolly version they provide an optional pulley system. They are also using one of the widest rails available from IGUS which handles much better than the smaller and narrower versions.
The IGUS rails work on dry (plastic-like) bearings that actually slide (not roll) across the rail. One thing to keep in mind with these friction sliders is you want to center the weight as best as possible. Too much over the side and you'll have unequal tension. The pulley system not only offers additional tension to make sliding more consistent, but pulls the carrier from the lowest point to provide less binding. As mentioned in the video, with the pulley crank removed, you're pretty much 80% the way to making a motorized slider or motion controlled timelapse rig. The Camtree Micro Dolly comes with Pulley system, Quick Release Adapter, and Foam padded Travel Case.
Opteka's new 23" Slider video sample from Vimeo member skooKILLfilms. Camera used was the Canon 60D + 18-135mm kit lens and Samyang 8mm. The Opteka 23" slider is based on the IGUS rails, and offers a decent start for those who aren't looking to modify or DIY their own. It's an inexpensive slider that can provide excellent results, especially if you're shooting on a smaller format camera like the Sony NEX or Micro Four Thirds system, these linear rails should work fine.
The Konova Roller bearing slider is still one of my favorite Video Camera sliders, but with demand comes rising prices. The IGUS linear guide rails are no secret and are extremely efficient for the price (Much better than the $99 dollar 80/20 aluminum extrusions). For anyone looking to DIY an IGUS rail as a camera slider, there's some options available via Amazon. There's still some fine tuning involved like adding a brake/stop, drilling a hole through the carrier, adding some stands, and threading some mounting options for your tripods. Not a project for everyone.
Here's an interesting recent DSLR Slider item listed. Opteka's released an entry level portable IGUS based camera slider with FREE SHIPPING. Opteka's got all the necessary pieces and features you would normally have to DIY yourself. Included in the cheap slider is threaded taps for your quick release plate, pre-drilled Fluid Head hole in the carrier, a Brake/Stop screw, a few added legs to set it off the ground, and an included Spirit Level. So if you've been thinking about that DIY IGUS setup, but were afraid to tackle the details, you might want to check out Opteka's version available from 23' to 47" length. The Manfrotto 700RC2 Fluid Head would work great on this small slider as well.
Looks like a fun little DIY Arduino based motion controlled slider project is unfolding. Starting the platform out with IGUS Drylin W rails and carrier (wider version), and adding in a custom fitted pulley system. My guess is that the programmable controller will eventually be used for Timelapse movements and intervalometer trigger. Part 1 & Part 2 videos show some of the DIY process, but more information can be found from Vimeo member Stefan Kohler. Oh and if you're hoping something like this will hit the market, apparently it's not planned for it.
DIY Camera slider - Making of - Part 1 - Mechanics
DIY Camera slider - Making of part II
Of course, if you're looking to get into Motion Controlled sliders, you can't go wrong with Dynamic Perception.
This was filmed between 4th and 11th April 2011. I had the pleasure of visiting El Teide. Spain´s highest mountain @(3718m) is one of the best places in the world to photograph the stars and is also the location of Teide Observatories, considered to be one of the world´s best observatories. More......