Thanks Tao for the tips

The winter here is kinda boring. Really don't have much to shoot. Maybe i'll just go somewhere near airport:)

Tried aiming at a cross street neigbor's electric meter about 100m away and found that I could not read the numbers on it. Looks like I need a 2x. 

Since 1.8m-infinity range include the 6m-infinity, what's the purpose of the 6m range? I guess it's better to use 6m range if the object is further than 6m from me. 

 

Happy new year!