Originally posted by ftpaddict As far as I can tell, the only difference between the D300 and K10D are AF and burst speed.
You're joking, right? Well, the D300 has (at least) these advantages over the K10D:
1. Higher resolution.
2. Superior noise characteristics at high ISO.
3. Higher max ISO.
4. All metal magnesium body (K10D is plastic over steel).
5. 51 sensor AF system with true predictive focus, true 3D image tracking, MUCH FASTER AF speed, and MUCH BETTER AF performance in LOW LIGHT. Fine AF adjustment of individual lenses available (without some old firmware hack).
6. More sophisticated light metering.
7. More sophisticated flash metering.
8. Much broader selection of both new lenses available.
9. Better compatibility with older lenses: all "AI" lenses (1976) or later work in all supported modes with full matrix metering. Older lenses can usually be converted to AI for a modest cost. Pentax only allows manual mode with pre-A lenses, and metering is somewhat dicey at best.
10. Better range of system accessories from both the manufacturer and 3rd party sources (flashes, teleconverters, hot shoe GPS, etc.).
11. Better battery life.
12. Better viewfinder showing 100% of image area.
13. DOUBLE the frame rate of the K10D.
14. Bigger rear LCD with THREE TIMES THE RESOLUTION.
15. Full 14 bit RAW files.
I could go on, but I think I made my point. A fairer comparison would be the D300 versus the K20D, but most of the points above would still apply.