I will be 70 in December. I'm still travelling, and in fact am now planning to spend three months in Malaysia, Sarawak and Sabah from July and the end of the year in Indonesia. Travelling light has become much more important to me as I find I'm now not coping particularly well with a lot of luggage or heavy cameras with many lenses. My D700 is a superb camera but carrying it around in a backpack feels like a load of Portland Cement blocks...
I'm also lightening the gear load at home. Last month I had a big clearing out and sold two Fuji GA645i MF cameras, five old MF folders, and one of my two Nikon D90s. Flogging the D90 hurt a bit as it was my first DSLR and had shot less than 20,000 images shot (which pleased the new buyer). I have another D90 and I had intended to sell it also, but in the end I couldn't bring myself to part with it just yet and so I'll be using it for a few more months. I may take it with me to SE Asia as it and a 28 2.8 Nikkor would be lighter than my D700 with three lenses, which I've travelled with for the past few years. Less is better. Well, lighter is better, anyway.
I shoot a lot of colonial architecture, and for my next trip I'm pondering whether to take a film kit - likely a Contax G1 with 28, 45 and 90 lenses (or a 21 in place of the 90 which I rarely use - or a digital kit, ideally my D90 with 24, 35 and a 60 micro. These lenses suit my way of shooting but I know the Nikon DSLR kit wouldn't be much lighter than if I took my D700.
I did think of a Rolleiflex T with a 16 exposure kit and the barest minimals (lens hood, UV, close ups, and of course film) but have decided against this as I would find it too limiting. The Contax suits my eye and the Zeiss lenses produce superb results on film.
The D90 is ancient but still turns out RAW files I can do excellent 11 by 14s with on the few occasions I need prints.
In a pinch I could make do with the D90 and a 24 2.8D but the verticals in the buildings I photograph will then need careful attention. With the 24 or 28 on DX I too often find I have to return to a location and reshoot to fix up the tilts, but then the same often happens when I shoot with the D700. Using the grid helps, also a tripod and careful attention with a spirit level. Which often makes me feel as if I'm out shooting on 8x10 with a digital Gandolfi...
As an aside, my D700 is approaching its 200,000 clicks "anniversary" and as it has served me well, I am thinking about its future replacement with another Nikon. I have AF lenses from 20 up and a dozen pre AI and AI Nikkor primes, so I would like a Nikon that can handle this assortment, and is lighter to carry than the hefty D700.
Any suggestions will be greatly appreciated.
(Added later) This is travel related, but (as usual) I digressed a bit, SWEIN! Should I post it in a new thread?