Hi Frank, the 24-120 range is fine. Canon and Sony are pretty well supported throughout Asia as opposed to Nikon which is getting better. The problems with having many lenses is making the final cut for walking and air travel. If I were getting on a plane for Saigon tomorrow I would probably grab the Df, 24-85vr , 58 1.4G, Sigma 24 1.4 A, 85 1.4D(or 105 2.5Ai) and the SB400. I actually may be getting on a plane next week for Pondicherry and am thinking radical
Df, 105 2.5 Ai, 28 f2 Ais, 58 1.4G, EM1(sans grip) 17-1.8 , 9-18, 60 2.8 Macro and 75 1.8. That is quite a bit but all walking on level ground, no hills, mountains or rivers to cross and much will stay in Hotel safe
I shoot people more than anything else when I travel. Normally my wife shoots the Landscapes, Monuments , famous buildings etc and my son shoots whatever his mind sees
If I were travelling with my wife and son that would change. In the past I have done most of my travelling with the D700 and 70-200 2.8 ,24-70 2.8, 85 1.4D and 60 2.8G. Heavy. Last trip was D700, 180 2.8D, 16-35vr, 60 2.8G and 85 1.4D and still heavy.
One camera, one lens...Df, 24-120 f4 or possibly D750 but still love the files from the Df
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Tom