I just found some information that may relate some folks problems with autofocus. Here's a snip of information I found on the photoreview site:
>>i got my n80 at Ritz and tried a couple of Quantaray lenses on the body, it shocked both me and the salesperson that the AF won't work at all! the lenses i tried are a 28-80 and a 70-240 if i remember them correct. i tried two n80 camera bodies and neither will work with these lenses. they went through the camera manual and tried everything including the af/mf switch but they just won't work. then i tried several nikon lenses they have in stock and they worked great! since i was the first to buy this camera in the store the staff had no experience about this lens/body combo. all they could tell me was 'odd... weird...', and in the end they suggested me to stick to nikkor lenses - and that's where i'm going. hope this helps. <<
It seems that anyone owning an N80 body should be very careful to check the function of an aftermarket lens before purchasing. I wonder if there's a subtle change that has been introduced in the N80 that makes it incompatible with Sigma (the maker of Quantaray) lenses and potentially other lenses. I'll start a new thread on this topic and see if we can learn how extensive this problem is.
I've read about similar incedents with C**** bodies and third party lenses (typically with respect to eye focus control or the USM motor)in other bulletin boards. I guess this has something to do with the reverse engineering the third parties have to do to make their product compatible. Of course the lens may be fine, but the body is well... . (Sorry, I couldn't resist.)
It would certainly be interesting to see if other lens manufacturers are having problems, too.
I just got back from a camera shop around the corner from my office (thank goodness for lunchbreaks!). I tried and F80 (n80) with a Sigma 28-200 and a 170-500. BOTH focussed fine and worked properly.
Quantary are not exactly what I'd call good lenses. The one I tried (it was a 35-80) which should have been a simple lens, had bad vignetting problems. I'm told Sigma is having QC problems with the Quantary line at this time as well.
BJ, Just got home from vacation and read your message. I immediately tried my Tokina AT-X lenses on my sons N80 and they all worked fine. (Just remembered, he used them while on vacation a couple of times and they worked fine then.) Possibly, it's because of the Ritz lenses. I have heard through the grapevine that Quantaray lenses were not that well made. Now, I just heard that, I have no first-hand experience with Quantaray lenses. Doug
It looks like most people are having good results with aftermarket lenses. It may be that the odd report was due to a problem with Quantaray tolerances, the tolerances on the particular N80 or perhaps both. If the AF drive pin didn't line up properly, that would explain a total lack of autofocus action.
Love em. Only problem is with the 20-35, you have to use the slim polorizer and UV to prevent vignetting. Trouble is, you can only notice this on the F5 or on a developed print. It is very little vignetting, but it's there. When I use a ND filter I have to shoot at about 23mm versus 20mm without a filter or with a slim filter. (Don't have the same problem with the 28-80 or 28-70; normal size filters do not cause vignetting, unless I stack more than one on to the lens. I have only had to do this when trying to get a very slow shutter speed in bright sunlight by stacking ND filters.) Other than that, I love em. They are built like tanks, operate smoothly, glass is exceptional (for landscapes can't say for shooting straight lines, but heard they are good at that too). Like them so much I ran out an purchased their new 28-80 F/2.8 even though I already had the 28-70 F/2.6-2.8. My only experience is with their AT-X pro series; however, from talking with a few people, the less expensive non AT-X pro lenses have good optics too. They are just not built with aluminum barrels and/or nickel-plated brass lens mounts. Doug
I had a manual focus OM mount 28-85 AT-X. It was very well built, and for its time it was an excellent performer. When I bought the lens new, camera makers were very conservative and most only had two or three zooms in their lens line. It sounds like Tokina has maintained a high standard for this series... I'll take a look at the 20-35. The 77mm filter size is a bit of a problem.