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17 votes

Cleaning the rear element of a lens?

You can absolutely clean the rear element as you've discussed - it's done exactly the same as the front element is cleaned. Caution must be used because if, for example, a piece of grit were on the ...
Jim MacKenzie's user avatar
13 votes
Accepted

Dust on Sensor After Many Cleanings DSLR

Unless you are working in a NASA grade "clean" room, no matter what method you use you will almost never get every single dust spot. Even if you do, by the time you put a lens back on the camera, more ...
Michael C's user avatar
  • 175k
13 votes

Why isn't my DSLR's viewfinder showing focus correctly after removing it for cleaning?

Solved. I accidentally placed the focusing screen by flipping it on other side which made in focus objects blurry. I corrected it and it's back to normal now.
intruder's user avatar
  • 171
8 votes

What are these pixel-level discolored specks? How can I fix it?

I ran a few more tests. Here are the results: No change to sensor: f/2.8, 1/6", ISO 200 Blue specks (similar to the top speck in the sample pictures) f/10, 2.0", ISO 200 White specks (similar to ...
zli's user avatar
  • 307
6 votes

How to clean the mirror on an SLR without damaging it?

Just don't. The coating on the surface of your camera's mirror is the most fragile piece of your entire camera that is accessible without taking the camera apart, probably followed closely by the ...
Michael C's user avatar
  • 175k
6 votes

Can dirt on a camera's lens cause graininess, without causing large-scale blurring of the picture as a whole?

Dirt can never cause grain. It's more likely you are seeing digital noise. Switching to lower ISO should help.
Aram Hăvărneanu's user avatar
6 votes
Accepted

Can dirt on a camera's lens cause graininess, without causing large-scale blurring of the picture as a whole?

Yes, it's possible — but it's more likely that that's just how it is. You can't expect miracles from a point and shoot camera, and fine detail with no noise when "pixel peeping" would be a miracle. ...
mattdm's user avatar
  • 143k
6 votes
Accepted

Clean film negatives heavily contaminated with wet paper made negative cases

Soak in a tray or tube of water at room temperature. Add two teaspoons of Dawn dishwashing detergent per quart (liter). Soak for several hours and test the paper to film adherence. If not free, ...
Alan Marcus's user avatar
  • 39.3k
6 votes

Cleaning the rear element of a lens?

You can absolutely clean a rear element on a lens, much as you'd clean the front element. Exercise the same caution and you'll be fine. The only danger with a microfiber cloth is that it should be ...
inkista's user avatar
  • 52.5k
6 votes
Accepted

Is there a way to remove fungus without dismantling the lens?

UV light will kill the fungus, so all you need to do is let the lens be exposed to sunlight for a few days. Be sure to remove any UV filter you might have attached to the front of the lens. ...
Michael C's user avatar
  • 175k
5 votes
Accepted

Are self-cleaning sensors now standard?

Among digital cameras with interchangeable lenses, this is now an almost standard feature. Let's look at DSLRs first, since you mention those explicitly. Among 105 DSLRs released since May 2005, only ...
Itai's user avatar
  • 103k
5 votes
Accepted

What are these streaks on lens element? How to remove?

Upon close inspection of the provided images, it appears that someone has tried to wipe the lens element with the wrong tool. This left light streaks on the surface of the element. From that ...
jihems's user avatar
  • 710
5 votes
Accepted

What's the problem causing this ring-shaped artifact in my image even though I have cleaned my lens?

Based on its shape and brightness profile (bright rim, dimmer center), and the fact it's in the same location on multiple frames, I believe this is a dust mote on the sensor. If your camera has a ...
Zeiss Ikon's user avatar
  • 7,140
5 votes
Accepted

Does cleaning the camera sensor affect its autofocus capabilities?

On most DSLRs, focusing is done through a dedicated phase detect sensor which is separate from image sensor. As a result, autofocus is not impacted by anything you to do the imaging sensor. This image ...
wilkgr's user avatar
  • 758
4 votes

Auto sensor cleaning - is the movement too fast to be visible?

It is imperceptible, either as direct movement or blur. Source: I removed the lens from my Fujifilm X-series mirrorless camera and activated sensor cleaning. The rear LCD says "sensor cleaning", so I ...
mattdm's user avatar
  • 143k
4 votes
Accepted

Is it dangerous to use Auto Sensor Cleaning with lens attached?

No. It's fine; I can't imagine why there might be a problem. Automatic sensor cleaning generally works by shaking the sensor a small amount at high frequency. This doesn't get anywhere near the lens (...
mattdm's user avatar
  • 143k
4 votes

What is the best liquid for washing old negatives?

Don't wash with water if you can avoid - use film cleaner available for cine film. Try Filmrenew - search web for supplier. Formaldehyde was removed from stabilizer years ago. It was replaced by a mix ...
Alan Marcus's user avatar
  • 39.3k
4 votes

I have made the lens dirtier than before cleaning it. How can I recover from this?

What you are seeing is the result of dust on your sensor, not on the lens. Most modern Digital SLR and mirrorless cameras have a sensor self cleaning mode. Check your manual for instructions on how ...
Mike Sowsun's user avatar
  • 12.3k
4 votes
Accepted

How to properly polish phone camera plastic cover?

The problem is, any clear piece of plastic or glass that is not FLAT to an extremely precise standard is going to act as a lens or prism of some sort, adding distortions and aberrations. Using a ...
rackandboneman's user avatar
4 votes
Accepted

How do I go about fixing this strange dark line blocking my Minolta XG-1's viewfinder?

Age and heat have detrimental effects on any lubrication or seals in a camera. Heat may have caused the the substance that hold the prism in place to soften allowing the substance or the prism to ...
Alaska Man's user avatar
  • 3,618
4 votes

How to remove paper sticker on negatives?

That paper is for handling and filing (note the holes!) the negative strips. It's usually glued to the negatives with something like a narrow tesa film, you should be able to simply tear it of ...
ths's user avatar
  • 7,171
3 votes

Why does fungus form in lenses, and how to get rid of it?

The belief that a lens with fungus can infect others nearby is nonsense. The spores that cause fungus to develop are in the air around us at all times, only "clean rooms" are likely to be free of ...
allan's user avatar
  • 31
3 votes

What is the best way to clean the sensor on a interchangeable lens camera (mirrorless or digital SLR)?

There is no single "best" way to clean the sensor of a digital camera. To put it more precisely, which way is the "best" can depend on a number of variables. The most significant variable, by a fairly ...
Michael C's user avatar
  • 175k
3 votes

Will clay and wood dust affect my camera?

Yes. This kind of dust is pervasive and will get where you don't want it. The underwater housing is a good idea — or if that's too expensive, a ziplock bag, some tape, and careful checking of all the ...
mattdm's user avatar
  • 143k
3 votes
Accepted

How do I clean a Yashica Mat-124g taking lens?

It's entirely possible for haze to come from degradation of the cement gluing two elements together, and it's really not possible to clean it. It could also be that the surface of the elements has ...
inkista's user avatar
  • 52.5k
3 votes
Accepted

Cleaning lenses with ultrasonic technology

A modern quality camera lens consists of multiple individual lenses mounted in a tube. Some are spaced apart and some are cemented together. Likely a quality lens barrel contains a tiny motor for ...
Alan Marcus's user avatar
  • 39.3k
3 votes

Is there a way to remove fungus without dismantling the lens?

UV lamps are available in the market. It would be better to put the lenses in an ordinary stainless steel container and put the UV on for few hours; don't look at it while it's on. I think it's ...
SUSANTA LAHIRI's user avatar
3 votes

Is there a way to remove fungus without dismantling the lens?

I have had a small amount of fungus in some second-hand lenses, I took the rear and front caps off, went out on a very sunny day, and had the sunlight shine directly through them(not attached to the ...
Bear91's user avatar
  • 41
3 votes

Removing dust from gelatine layer of processed film

You could try to wash the film strip in running water. The water should be at a constant temperature (no significant changes). Gently-running water would be best, as it will tend to eject the dust ...
Jim MacKenzie's user avatar

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