Found a used N90S with Mb-10 at garage sale for. All seems to work fine - BUT - when I mount an AF-D lens (28-200) and put in in A mode (with lens aperture stepped down and locked at f22) - the viewfinder is dim - for some reason the camera is not telling the lens to open the aperture up. read manual and googled everywhere but can't find a reason why - maybe the camera is simply toast - and not worth the effort other than to use manual - which is a pain as in manual mode it steps the lens down and it's still dim...
Varies, in manual mode it does show the correct apertures as i vary the lens. In P mode the meter will adjust aperture accordingly as i move camera into varying light conditions but when looking into lens it is stopped down at f22, thus the viewfinder is dim. Therefore i think there is something wrong with the camera electronics that tell the lens to open aperture. When i use the depth of field preview i get an F-- message which i believe is normal.
I purchased the body and mb-10 battey pack, plus canon eos rebel 2000 and lens, plus a bunch of minolta lenses, flash amd sone polarizing filters for $60. My hope was that the n90 would work and i would sell the rest in ebay to recoup the 60. (the 2 minolta lenses are in E condition and should yield 35 alone.
I guess i may sell it for parts, recoup what i can and call it a day...
At least i gave my D200 and Nikon EM which work perfectly!
Is the lens fully seated and locked in the mount? The stop-down mechanism is a mechanical connection. There could be a bent lever on the camera body or the lens. Does the lens work properly on other bodies? Good Luck and Enjoy your Nikons!
Sun 10-Jul-11 10:24 PM | edited Sun 10-Jul-11 10:30 PM by ZoneV
The reason it likely is not working right is that you need to adjust the lens aperture to the value you desire to use. You can't just leave it locked at f/22 all the time as you stated. you're probably outside the metering range. The N90s does not work that way, like the newer cameras do. You need to set the aperture on the lens. It's more like the Nikon EM than like the D200 in that respect.
See if that helps. Then again, it shouldn't be a dark viewfinder. Something must be amiss.
Sounds to me like the aperture is stopped down. That could be due to a faulty lens, or more likely, a bent lever in the N90s body. It's best to try some other lens or body to see which of the two is at fault.
_____ Brian... a bicoastal Nikonian and Team Member
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I would try the lens on a different camera and a different lens on that camera. It could just be a quirky misfit. Clean contacts and try some of the above suggestions also. Don't dump a usable lens for parts.