For those who are interested, a few first impressions from the pre-production units:
Initially I played with all 3 DL models, but quickly centered my attention to the DL 18-50. Which is the most interesting for me.
For the DL18-50:
1) The basic operation of the camera is fast (on, off, menue, AF, ...)
2) The lens has 11 elements, 7 of them are special lenses (hri, ED, aspheric, etc .. pls check technical data). The DL18-50 is the only DL model with Nano coating. This lens was the most impressive lens I took from this short encounter. Impressive not by the data, but by IQ (as seen on the monitor and zoomed in)
3) If the macro option is turned on in the menues, the lens focus until 3-4 cm in front to the front lens. Good quality IQ and impressive macro wide angle perspective.
4) If AF is set to AutoAF, AF is very fast. Would not be surprised if as fast as DSLRs with fast lenses.
5) In low light situations (i.e. ISO 6400, f1.8, 1/20 sec ; EV = 0), AutoAF was fast and precise. Could not find a darker spot in the room. The faster lens vs. the 1 Nikkor 6.6-13mm support the operation of AF and sensor. It is approx 2 stops faster.
6) Switching the AF to AFS and 1 AF field, some of the AF performance goes away. It looks like the CPU is fast enough to interpolate AF information when many AF fields are active vs. relying on the info from one AF field (which might find contrast or not).
7) Nice image on monitor when the camera is set to ISO 6400. Again, it could be the faster Expeed, allowing higher quality real time NR algorithms.
8.) Usually small camera zooms are hard pressed with cross light situations. Not this one - I tried intentionally to maximize flare. Good suppression. Nano?
9) Compared to the DL24-85:
The DL18 is more "special" with its focal range. The DL24-85 has more competition. The DL18 is heavier - more glass in the lens. 18mm vs 24mm is significant at the wide end - think rooms/city/street. But 50-85mm is missing then. 18mm & macro is very nice.
Overall, the DL18-50 was the one which triggered more interest with me. Will wait for final models for another quick look and then decide.
My temporary ranking based on this quick encounter:
1) DL 18-50
2) DL 24-85
3) DL 24-500 (pls consider: I have no "need" for this)
cheers,
Andy