[toni-a]

Thanks for the excellent feedback, as usual. As for the stones, fortunately there are no stones on the road, as the road is not gravelled, but asphalted. Since it's a road reserved to hikers, bikers, and a very limited number of authorised vehicles, it's not maintained with the usual standards and there's no smooth asphalt (that would not make me worry), but - especially in some places - is full of  irregular"patches".

 

In any case I'm also considering an alternate approach: put into the trolley everything else than the big lens (such as water bottles, the binoculars, the emergency kit, etc...). Might be anyway an effective mitigation of the overall weight on my back. 

Well what about using a bike and carrying everything on the bike ? that would be much more practical

[chrismiller]

How about one of these instead: http://www.panasonic.com/uk/consumer/cam...0400e.html

 

[stoppingdown]

Well what about using a bike and carrying everything on the bike ? that would be much more practical

 

:o  :o  :o  :o   I can't ride a bike...  :o  :o  :o  :o

 

How about one of these instead: http://www.panasonic.com/uk/consumer/cam...0400e.html

 

 

Honestly, not a bad advice. I can't compare MTF of that lens to the Sigma, but I've read some good review. But I can't afford to maintain two different systems.

[JJ_SO]

But you can ride a bicycle?

 



 

I have another bigger rear bag which fitted for the 150-600 plus Gimbal.

[stoppingdown]

I wrote "bike" in the sense of "bycicle". Everything which has just two wheels...

[JJ_SO]

Ooops.

[stoppingdown]

A few little news. Art Morris just blogged about his experience with some gear, and talked about the Wheeleez. It's a system of trolleys, smaller and larger, which also can be equipped some pneumatic tires. Art uses them on the beaches; I've just asked him whether they are shock-proof for bump on the terrain or roads. Let's see what he replies.

 

The thing looks expensive, though, unless the wheels - which can be separately bought - can be mounted on something cheaper.

[davidmanze]

I've found the solution for you Stopping down!  

 

 

It's here:

 

https://www.youtube.com/watch?v=CI2KelDN-fQ

 

 and follows you without even having to whistle!

[stoppingdown]

Dave, I'm taking this half seriously!   I mean, sure I'm not going to buy it, because it would be unfit for rough paths... But I've got a friend who builds robots in his spare time:

 

https://it-it.facebook.com/ninobotweb/

 

And maybe we can do something with the Wheeleez gears...  .