Question about Nikon D40x Digital Camera

2 Answers

A spot appears in same location on every picture

Hi, I have a new (less than a month) D40x camera and recently noticed that in every picture I take, a small gray spot appears in the upper right section. This is most noticeable when I view the pictures on my computer. The spot is most apparent when the background is white or light in color. Also, I notice the spot more when I "zoom in" with the lens. I only have one lens so I can't be certain if it's a lens problem or a camera problem. Still, the spot is at the same location regardless of how far I zoom in or out in any given picture.


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  • kjk3410 Jan 10, 2008

    One more note: I've already attempted to use compressed air to clean the mirror/lens

  • kjk3410 Jan 10, 2008

    I've done that already, and the problem persists. Thanks though!



2 Answers

Its not the mirror that has the dust spec its the sensor.

you have to use the mirror lock option on the setup menu.

remove the lens first. then turn the camera down so no more dust can enter. use the mirror lock-up function. hit the shutter and the mirror will flip up and expose the sensor.

gently use air to blow the sensor. turn off the power and the mirror will close again and put everything back and check if the dust specs are gone.

Posted on Jan 10, 2008

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Take the lens out and blow air inside the camera and on the inside part of the lens.

Posted on Jan 10, 2008


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1 Answer

D40x sharp spots on long exposure pics

Hi jchp_2001, I want to help you with your question, but without more information from you, I can only guess what you mean?
What do you mean by "sharp spots"? I will assume that you are talking about speckles of white or colors in the deep shadow areas of your pictures or in black areas of night time exposures. What you are seeing is electrical noise generated by your camera's sensor and amplified by other electronic circuitry in your camera. Newer and more advanced cameras have higher signal-to-noise (S/N) ratio circuitry that reduces, but does not entirely eliminate the problem. The S/N ratio is a measure of how much stronger the picture information is than the electrical noise (analogous to to the static you hear on a week AM radio station). The higher this ratio, the fewer artaffects, such as spots, will appear in your pictures. There are a couple of ways to lessen this problem. You could use a shorter exposure time, lower the ISO setting on your camera (of course that would increase the required exposure time and my nullify the benefit), or illuminate the shadow areas with supplemental lighting. The other way is to buy a newer camera that has a higher S/N ratio. One of the main goals in new sensor and camera design is to raise the S/N ratio. Trading in your D40x on a newer model DX (24x16mm sensor) format camera will help. The reason that professionals more advanced photographers spend thousands of dollars on full frame (36x24mm sensor [the same size as a 35mm film slide]) digital cameras such as the D600, D610, D800 or D810 is because the larger sensors have an inherently higher signal to noise ratio. That is in part why your D40x gives you better quality pictures than a Coolpix camera for example, which has a smaller sensor.

Sep 27, 2012 | Nikon D40x Digital Camera

1 Answer

In every shot I take there is a small shadow spot on the left middle!Why? I bought the camera used from a friend and they say they never had this problem,so I returned the new lens I bought and purchased...

If the spot appears on pictures you view on the computer or in prints, then the spot is dust on the sensor. If not, then the spot is on the focusing screen. You can clean the sensor but you will need some supplies and a little knowledge. Google the words "cleaning a DSLR sensor" and you will find sites with pictures explaining the procedure. It's not difficult. This problem is common with all cameras with lenses that can be removed.

May 18, 2010 | Nikon D40x Digital Camera

1 Answer

Blurry spot on bottom left of picture

It sound like you have some dust particles or a smudge spot on the CCD screen (actually on the low-pass filter in front of image chip). To leave an image on CCD, the dusts must be closer to the image plane to be registered so it should be somewhere closer to the screen or right on it. Take a look at the screen with "CCD Clean" mode and blow out any dust. If the smudge is on the screen, I recomend trained tech should clean it. good luck. For further assistance by email, go to

Mar 26, 2009 | Nikon D40x Digital Camera

1 Answer

My Nikon D40X won't take pictures, only makes squishy sound

take the batteries out of the camera and the memory card..verify that the memory cards are good by trying them in a printer or another cam..
other thing is you might not be in picture taking might be in the settings mode..check the user manual if you don't know if you are.

Jan 18, 2009 | Nikon D40x Digital Camera

1 Answer

A small dark blob, exactly circular, translucent, fuzzy outline, which is on every pic.

Same problem here too! dark spot and what looks like dust appearing on all pictures. Comes into sharper focus on extreme zoom.

Feb 24, 2008 | Ricoh Caplio R6 Digital Camera

1 Answer

About the spots on photos..

I recommend returning it. Nikon's QC may be lacking these days

Feb 03, 2008 | Nikon D40x Digital Camera

1 Answer

Spot/shadow on monitor and pictures

Does it appear on the photos if you look at them on a computer or print them out, and does the spot remain when you're using the menu?
If it's there all the time (on menus as well) it would suggest part of the display is starting to fail.
Also, have you done the shutter hold-up so you can check behind the mirror just in case it's something on the sensor (assuming it's not just the LCD that's failing)?

Jan 02, 2008 | Nikon D40x Digital Camera

1 Answer

Photo information appearing on top of image

Push the "up" or "down" arrow on the 4-way button (right of the screen) until the info disappears

Dec 17, 2007 | Nikon D40x Digital Camera

1 Answer

Spot on every shot

Your sensor may have gotten dust on it to confirm this, set camera to a small aperture eg. f22 and take a picture of a white page then set camera to a large aperture eg f3.3 ant take the same picture. If it is dust you will see the spot on the shot taken at f22 and not the one taken at f3.3. This can be solved by having the sensor cleaned. If the gray spot is on both images you most likely have a damaged sensor

Oral Davis
Trinidad West Indies

Nov 24, 2007 | Nikon D80 Digital Camera with 18-135mm...

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