This whole "I'm gonna move up to full frame, so I don't want to buy any DX lenses" thing really only makes sense if you're planning on doing it SOON. And that's because glass holds value, particularly high-end glass.
Yes, your camera body will depreciate straight into the ground--it's computer electronica, being continually obsoleted every year or so.
But the glass isn't. It's just as usable (if you take good care of it) five years from now as the day you bought it. Check out the prices of used lenses on eBay or KEH.com.
A 12-24 DX goes for $900 new on Amazon here in the US. On eBay, the lowest price a used one went for recently was $699.
As long as the mount doesn't get orphaned, you typically don't lose a whole lot. If you look at it as paying, say, $40 a year to rent a lens for five years, there's really no reason not to get a DX lens, until you have a D3x or D700 (or their successors) in your hot little hands. Once you do, you sell your DX glass and go buy FX glass.
Why hamper yourself with longer focal length than you'd like for five years, if what you really want is a wide angle view?
Just a thought.
Last edited by inkista; 08-13-2009 at 08:40 PM.
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