I am considering buying the D50 with this lens, but am not sure if there are significant drawbacks (apart from the missing aperture ring) when compared to the DX lenses (e.g. 18-70) specifically constructed for the D50 and other digtal SLRs? For example, is this lens slower in autofocusing than the DX lenses?
#1. "RE: 28-80mm f3.3-5.6G AF Nikkor Zoom for D50 ?" In response to Reply # 0
I'm not sure about the quality of the 28-80, but the 18-70 AFS DX is an excellent lens for the money. Since it's an AFS lens, autofocus will be faster (and quieter) than the 28-80. The 18-70 also does not have an aperture ring. The only "drawback" that I see for DX lenses is that you're unable to use it optimally on a full-frame 35mm camera since they're designed for the DX sensor.
You might want to check out the lens reviews from Bjorn's site for the two lenses here or Thom Hogan's review on the 18-70 here
I debated between getting the 18-70 or the 24-85 AFS with my D50 and decided on the 24-85 simply because I use those focal lengths more often.
I would say to go for the best lenses that you can afford, and in this case this would be the 18-70.