Cheapo Leadscrew with minimum accuracy requirement!

[tumutbound]

What sort of weight constraint do you have?
(I'm assuming this is the major consideration for a portable device)

[Vikash]

Well, we're not talking about time critical capture here, so the ease of moving it around is low in priority. As long as one person could move/set-up, I would guess up to 20kg wouldn't be unreasonable.

For any non-product or real-time videography where actual portability is required, like any social event or a wedding for example, it would be glidetrack all the way.