Question about Nikon N75 35mm SLR Camera

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My Nikon N75 has a black speck in the viewfinder. Does not affect the photos but drives me nuts. Is there a simple way to access and clean the viewfinder?

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That depends on where in the viewfinder. If it's the reflex mirror, use a bulb blower to clean it. Don't touch it with anything, and down't use canned air. The underside of the viewscreen can be cleaned with a soft cloth or lens tissue moistened with ethanol or lens cleaner (be careful not to touch the mirror as you do this). The same with the eyepiece.

If it's in the penta-mirror system then it gets a lot harder. You'd have to take the top cover off the body to get to the penta-mirror. Before you try this yourself, consider this. Do you have the proper equipment to make sure everything is aligned properly when you put it back together? An unaligned viewfinder can drive you nuttier than a mere speck (believe me, I've had cameras like that).

If, after cleaning all the accessible sources, it's still driving you nuts, consider having a professional do the cleaning. It'll cost more, of course, but you're much likelier to have a working camera at the end of the process.

Posted on Sep 13, 2010

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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

1 Answer

Black speck in images


Take a look at "The Low-Pass Filter" subsection of the "Caring for the Camera" section of the manual (page 105 in my copy). If you need a manual, you may download a copy here.

Mar 19, 2012 | Nikon D40 Digital Camera with G-II 18-55mm...

1 Answer

I am confused. Is the N 75 an SLR or 35 mm. My daughter needs a 35 mm for a photography course. She has an N 75.


Both. The Nikon N75 is a 35mm SLR camera. 35mm refers to the size of the film the camera uses. SLR (single-lens-reflex) refers to the design of the camera, which uses the same lens for both viewing and photographing, the film sees the same image you see in the viewfinder.

There are other 35mm cameras that are not SLRs. Likewise, there are SLRs that use other sizes of film.

Aug 14, 2010 | Nikon N75 35mm SLR Camera

1 Answer

Will the Quanta 28-200 for the Nikon n75 work on the Nikon D5000?


Yes and no. I assume the lens is of more or less the same vintage as the N75? If so, the lens will fit onto the D5000. All of the camera's exposure and metering modes will work properly. However the lens lacks an interal focus motor and thus will not autofocus on the D5000. You can focus manually, and the green focus indicator in the viewfinder will continue to work.

Apr 22, 2010 | Quantaray 28-200mm f/3.8-5.6 for Canon AF

1 Answer

New film is being rewound and the viewfinder is blank


The rewind switch is stuck. You will need to replace it or remove & clean it. replacing it is easier to do than tearing apart for they break so easily

May 11, 2009 | Nikon N75 35mm SLR 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

Dust inside my d200


The view finder and focusing screen are separate from the CCD sensor. The mirror reflects the image to the view finder until you take a picture. Then the mirror goes up, the shutter opens to expose the CCD to capture the image.

If you have a lot of dust, you should look into a cleaning kit, or have it professionally cleaned. This will show up on your images as white and/or black specks.

Jun 29, 2008 | Nikon D200 Body Only Digital Camera

2 Answers

Nikon N75


what do u mean?
turn it on. adjust the photo, take the shots.ur good to go!

Dec 20, 2007 | Nikon N75 35mm SLR Camera

1 Answer

Black particles on focusingscreen


If the specks are just on your viewfinder focussing screen, they won't be on your pics. If they're on both your pics and focussing screen, you need to find someone else to clean your camera. Cleaning either your CCD sensor or your screen yourself can leave scratches. Changing lenses often can suck dust into the inside if the body is dusty. Try another repair shop for thorough cleaning - it shouldn't cost more than $50.

Dec 17, 2006 | Nikon D70 Digital Camera with 18-50mm Lens

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