Question about Nikon N75 35mm SLR Camera

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My F75 won;t work at all

The mirror has frozen in the up position to I can't see through the lens; the screen initially would not turn OFF, then flickered, now it won't turn ON.  It doesn't seem to be a battery problem.  Help, anyone?

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1.Most SLRs have the same problem.The paste which used to fix the reflection mirror with the metallic plate is usually rubber based, So there is a chance to the mirror to slide from its original position to down due to gravity.And particularly when you focus close ups the lens extends backward and the lens struck the mirror Positioning the mirror to its original position will solve your problem.
2.May be your camera batteries weak check it for its operating voltage.

Posted on Mar 26, 2008

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Posted on Jan 02, 2017

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Minolta x700 cannot see through the lens. help


Which lens? Is this happening with just one lens, or with every lens you mount on the camera?

If you remove the lens and look through it, can you see light? Perhaps an upside-down view of whatever is on the other side?

If you look into the camera body after removing the lens, do you see a mirror at a 45-degree angle?

Aug 28, 2013 | Minolta X-700 35mm SLR Camera

1 Answer

Looking through viewfinder i see dirt & black specks


It depends where the dirt is. Following the light path, look at the rear surface of the lens. A dirty rear lens surface will have the most affect on picture quality or what you see in the viewfinder of any position in the light path. Like all optical cleaning procedures, hold the lens with the rear lens surface facing the ground so gravity will work with you. Start by blowing clean air on it using canned air or a blower such as a Rocket blower or ear syringe. If that is sufficient, do not continue the sequence. This holds true at the conclusion of each step because the more aggressive your cleaning becomes, the more risk there is of damage. If it is still dirty, gently brush it with a sable or camel hair brush. If that is not sufficient, gently wipe it with a dry lens photograph lens tissue (do not use coated tissues) or a microfiber cloth. Finally, as a last resort, dampen a corner of a lens tissue or microfiber cloth (do not put the wet solution directly on the lens) and gently wipe with a circular motion. Finish by wiping with a dry section of the tissue or cloth. Although the front surface of the lens is not as important, repeat the process for the front surface.
If you still see the dirt in the viewfinder, are two possible remaining locations; the bottom surface of the prism located above the mirror or the mirror.
Clean the prism first and avoid cleaning the mirror if possible, or any contact with the mirror. The prism can be cleaned following the sequence outlined above. If that doesn't work, the problem is the mirror.
CAUTION! The mirror is front surfaced and is very susceptible to scratches and other damage unlike a conventional mirror which is rear surfaced with the glass protecting the coating. Aggressive cleaning should be avoided.
Carefully follow step 1 of the lens cleaning procedure (air) and step 2 (brushing) if necessary. As far as the third and fourth steps, I would not use them myself because of the risk of mirror coating damage. It would be better to take your camera to a qualified repairman.


remove the lens and look above the mirror at the bottom of the viewfinder prism. If it is dirty, clean it as you would clean a lens surface. The next place to look is the mirror.
CAUTION! The mirror, unlike the mirror over your bathroom sink, is front surfaced and there is no glass between you and the delicate and easily damaged coating. Hold the camera with the mirror facing down so that gravity will work in your favor. If that does not work, I would stop and take it to a camera repairman because you do not want to risk scratching the surface by using lens tissue or cleaner.

Feb 05, 2013 | Nikon F100 35mm SLR Camera

2 Answers

I removed my lens and now when i fix it back, the shutter gets stuck in the mirror up position. when i remove the lens again, the mirror swings back without any problem.


Sorry, but if you have no access to other lenses then there isn't any definite way to isolate where the fault is. New batteries aren't the answer as on your model they only power the light meter.

It's very likely to be a lens fault, especially if using either of the two lenses which Cosina usually supplied (the OM2000 is actually a rebadged Cosina with an OM mount and OM viewfinder surround) but that's just a best guess based upon experience. The Cosina lenses have an OM mount and badging, but they are very cheaply made and tend to fall apart. The tiny lens stop screw is a common loss to almost all OM lens models and it prevents the lens from being turned too far when mounting it onto the body. Without the screw, the lens only has to be a tiny bit over-rotated to cause faults similar to yours.

If you hold the lens and look at the mounting with the top of the lens pointing up at the 12 o'clock position, then the screw in question should be just clockwise of the bottom bayonet lug at about the 6:30 position. It's about 1.2mm in diameter and stands proud about 0.8mm. If there's a hole there then the screw has fallen out. Replacing the screw is awkward as the Cosina lenses use screws which are not interchangeable with "real" OM mount lenses, but it only acts as a peg so it's often possible to replace it by epoxy gluing in a short peg of bronze or steel. Temporarily glue the peg before final fixing though as it may need trimming to get it just right. The Cosina lenses also tend to shed screws internally causing either the aperture coupling lever or the stop down lever to be out of their correct positions.

Good luck, and please take a moment to rate my reply.

Sep 15, 2010 | Olympus OM-2000 35mm SLR Camera

1 Answer

Can't see through viewfinder (it's all black) and cannot trip shutter or advance film. batteries are new and intact.


Remove the lens and look inside it. Do you see the mirror? If not, your mirror is stuck in the up position. Its flat up against the focusing screen. If the mirror is down, the problem is in the lens, or you still have the lens cap in place.
Check your manual under troubleshooting.
Try setting the shutter speed dial to the M90 position.
Also be sure the batteries are inserted correctly!!!!

If no change yet, you can try to put the mirror back down yourself. With the lens removed, set the camera on its back. You can use your fingers, but I suggest a toothpick cuz they won't leave fingerprints on the mirror and the toothpick should break before you exert enough pressure to really break something. So just try to return the mirror to the 45 degree angle within the mirror box. Be careful not to damage anything in there, like the shutter or the arms that raise and lower the mirror. Depending on where you live, there may be some corrosion or rust on the mirror linkage. It should move easily. If you feel any roughness when you move the miror, that may be the reason it did not return on its own. Then turn it on, off again. At some point, you may want to have this camera cleaned, lubricated and Adjusted(CLA) - after all, its over 25 yrs old.
If all that did not work, you'll need to send it in. Here are some good choices for repair places...
Garry Airapetov in Niles, ILL
Camera Repairs in Avon, IN.
BTW here's a website with several pages about FG...http://www.mir.com.my/rb/photography/hardwares/classics/emfgfg20/fg/index.htm
copy and paste it into your browser.

Oct 10, 2009 | Nikon FG 35mm SLR Camera

1 Answer

Image through nikon f80 dark and cloudy


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.

Jul 20, 2009 | Nikon F801S 35mm Film Camera

1 Answer

Err message on Nikon 75 after taking a picture


Here's a link to the N75 / F75 user guide. The troubleshooting section / lens compatibility area might point to the problem. If the viewfinder is dark, the mirror is likely stuck in the UP position. This is usually due to a lens compatibilty issue, or the fact that the lens is not set to its smallest aperture (ie 22). The camera needs that to control the full range of aperture openings

Dec 07, 2008 | Nikon N75 35mm SLR Camera

1 Answer

Mirror is stuck down


if it its just a perticular lens then its because the body cannot comunicate with the lens to disable the lens lock Press and hold DRIVE MODE and AV buttons while turning on camera.

Jul 27, 2008 | Minolta Maxxum 400si 35mm SLR Camera

1 Answer

Mirror Locked in Up Position


When you say you put in a new roll of film, did the camera advance the film with the mirror locked up? Have you tried triggering the shutter few times to release the mirror? If that doesn't work, open the back of the camera. Turn the film take up spool in one direction...that should release the mirror down. Turn it also in the opposite direction. If that doesn't work, reach inside the lens mount opening and pull the mirror (very very gently) down. Don't force it down if it doesn't want to go. Sometimes that releases the mechanism that freezes from sitting idle for too long. It is always a good idea to take the camera out and triger few frames every couple of months to keep things lubricated. Let me know if that fixes it. AJ.

Sep 03, 2007 | Nikon N70 35mm SLR Camera

1 Answer

Shutter Speed values - Nikon F75


Well 250 is 1/250 second. 100 is 1/100 and so on.

Jun 26, 2007 | Nikon N75 QD 35mm SLR Camera

1 Answer

Mirror problems


Could be 1 of two things: 1. Mirror linkage failed. 2. Something is holding the mirror; sticky foam or the lubrication has dried out. Remove the lens, use slow shutter speed to release the shutter. While mirror is stuck in the up position, very gently pull down on the front edge of the mirror. If it frees up immediately it was stuck on the foam. Might be able to see a mark on edge of mirror from the foam. Hope this helps.

Apr 18, 2007 | Minolta XG-A 35mm SLR Camera

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