Bernard's going quite a long way to proving an earlier statement of mine that with the D3 and a few 'relatively' inexpensive high capacity CF cards a seperate backup/review device is rapidly becoming a thing of the past.
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That's precisely the plan. I am planning a 3.5 weeks trek to Nepal in April where we hope to go as high as 5600 m (about 17.000 feet), and the only technologically sound option other than CF would be to buy a 64 GB SSD and put it inside an Epson electronic wallet... but the price would be way higher than CF with no measurable advantage, and significantly less capacity (you can buy easily 2x 4x32GB CF = 128GB backed up for the price of a 64GB SSD + Epson base).
In camera RAID 1 has the advantage of back uping every image the second it is shot. The pain of having to wait hours every night to back up the cards on a reader is gone.
Besides, CF cards are much lighter than a portable SSD wallet, don't require any additional power source, reduce the inventory (risk of losing items/having some stolen, less complex packing,...).
This RAID feature alone would be enough for me to buy a D3 if I didn't have one already.
Were they 12 or 14 bit NEFs? It makes all the difference with kitchen sinks
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Important point for sure, but I did indeed perform the entire job on 14 bits, anticipating possible heavy PS post-processing and large prints.
Cheers,
Bernard