you have to recommend anyone rail system for the sony nex50 for big lens telephoto
to keep the lens stable and not in the air

Here is a topic about that: http://www.dvinfo.net/forum/sony-nex-ea50-all-variants/522969-saved-rod.html

noa looking for rail system for tripod to use big lens not for shoulder

Hi Serggio

I have a CAMTREE one and so has Tom ... you can get them from India or on eBay ..I think Tom said his came the UK. Just google "camtree rail" Mine was $110.00 and yes it has a tripod mount too!

Chris

Hi, I bought a Koolertron matte box and Fotga DP3000 rails from Amazon UK recently and I'm happy with the quality of them. I use it mainly with the Sony 18-105mm G lens.

Matt Bigwood which model is the individual rails?

Here's the link to Amazon UK Fotga DP3000 M2 Rail Support System 15mm Rod Baseplate: Amazon.co.uk: Camera & Photo (http://www.amazon.co.uk/dp/B00F2DTOFW/ref=sr_ph?ie=UTF8&qid=1416412936&sr=1&keywords=fotga+dp3000+rails)

thank you Matt Bigwood