Image through Nokia F80 viewfinder dark and cloudy
A few months ago I bought a second hand Nikon f80 (actual f80, the website doesn't seem to recognise it). All its functions are working since I last tested, although the batteries have died out since then. However, whenever I look through the viewfinder there is a dark and cloudy rectangle which obscures the whole image; around it is a clear outline, and there is also a small black curve across the top (definitely something else). If the camera is pointed at bright light, then this dark patch seems to fill up with white dots. I'm sure it isn't the lens, which I've cleaned, because the image remains the same if I remove the lens and look through the viewfinder. I don't think it is the mirror, which is quite dusty but otherwise looks fine. The focusing screen also looks normal, although there is a small scratch (which I can't see through the viewfinder anyway). I can't think of anything else; so I was wondering if anyone could tell me what it is and how to fix it/how much it would cost to fix, if it can be at all. Thanks, CC
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If the gears are stripped, it will require an experienced tech to repair.
That being said, there should be a small switch near the lens mount to switch between auto and manual focus mode's, be sure that that switch is pointing to A. When set to M, the little screw recesses into the mount so it doesn't try to engage, when set to A, it'll extend very slightly.
Also, Nikon has manufactured two types of AF lenses - with the motor in the body and with the motor in the lens, as with most newer lenses. Your camera should have a small screw on the lens mount that drives the focus motor between the lens and the camera, but I'm not 100% certain on that. Your camera can focus lenses with and without this type of coupling. BUT, if that screw/motor in the body is not functioning, you'll only be able to use lenses which contain the focus motor inside them, or manual focus lenses (you can manually focus AF lenses too).
I'm unfamiliar with the F80 but on models like the f65 and f75 the viewfinder screen has an lcd overlay and when the battery is exhausted or removed the viewfinder goes dark and blurry.
Looking at a picture of the f80 it looks like it's just an update on my f75 so it strongly suggests that you just need to insert a fresh battery. The lcd does draw power from the battery even with the camera turned off.
I hope that you found my answer useful, once you've tried another battery to confirm what I've suggested I'd appreciate it if you return the favour by rating my answer.
1) turn the mode switch/knob on the left of the camera to M ( manual mode )
2) turn your lens to the highest f-stop ( 22 or 16 depending on your lens )
3) in front of shutter release button you have control for your aperture : turn until the desired aperture is displayed ( view finder or the LCD monitor on the top )
4) your shutter speed setting is controlled with your thumb with the control situated next to the strap lug on the right hand side of the camera.
5) press shutter release half way and look through viewfinder and see light meter reading and adjust either shutter speeds or the aperture as explained being guided by the l.meter.