Cleaning and Maintaining Used Cameras: our Tips and Tricks

Used cameras have character – and with the right care, a long life ahead of them. Dust, moisture, or ingrained dirt can impair the mechanics and optics. But that doesn’t have to be the case if you keep your equipment in top condition with the right techniques. We’ll show you how.

Properly Caring for Cameras and Lenses – why It’s so Important

You probably know our promise: All used cameras and lenses you receive from us are thoroughly tested and meet our quality standards (unless otherwise stated).

To ensure that this remains the case after the purchase and that you can enjoy your new item for a long time, you should regularly clean and carefully maintain your used camera. Because both the mechanical and the optical parts of your camera can wear out over time and lose functionality: Whether due to dust inside your lens, dirt on the camera lens, or moisture inclusions that lead to fungal growth. The possible consequences: Poorer image quality, unreliable handling, and a diminished enjoyment of photography.

But how do you properly clean a used camera, and how do you keep lenses optimally ready for use for as long as possible? We have compiled our best tricks and tips for care and maintenance and will show you how to technically check and clean your analog camera and lenses flawlessly.

Our Step-By-Step Guide for Thoroughly Maintained Cameras and Lenses

1. Technically Inspect the Camera

Especially if you haven’t used it for a while, you should occasionally check your used camera for technical defects or errors:

Housing & Mechanics

• Does the housing have dents, cracks, or corrosion?
• Can all controls be used properly? Dials, levers, and buttons should be easy to use
• Do you see any dirt or moisture in the film compartment?
• Are the inserted batteries still working or should they be replaced with new ones?

Bonus tip:
If you are giving your camera a longer break, remove the batteries from the housing beforehand. This will prevent batteries from leaking or overheating and connections from corroding due to moisture or temperature fluctuations.

Shutter Speeds & Mechanics

Test the shutter and set your camera to different speeds: e.g., 1 second, 1/60 second, 1/1000 second):

• Slow speeds (1 second to 1/15 s) should run audibly and evenly.
• Fast speeds (1/250 s and faster) should trigger clearly and without delay.

If you find that the shutter is sticking or running unevenly during the test, a repair or professional maintenance is necessary in most cases.

Viewfinder & Mirror (for SLRs)

• First, test the viewfinder: The viewfinder image should be crystal clear. If the image is cloudy or foggy, check the viewfinder for dust or fungal growth.
• For SLRs: Look at the mirror mechanism. Does the mirror move correctly when triggered?
• For rangefinder cameras: Is the rangefinder clear and adjusted?

Film Transport & Rewind Mechanism

• Carefully turn the film winding mechanism and check for any resistance.
• Then gently turn the rewind crank – nothing should be blocked here either.
• The film counter should also move correctly when tensioning.

Check Seals & Light-Tightness

• Check the light seals (foam on the back) for crumbling foam. Do you see any porous areas? Then you should replace the seal.
• Do the darkness test: To find possible leaks, hold your camera without film in the light and shine a flashlight on various areas in a dark room.

2. Technically Inspect Lenses

Analog camera lenses do not have any electronics that can wear out or have defects. But the mechanics and optics of your analog models can also become prone to defects over time – that’s why we advise you to regularly check your used lenses:

External Inspection

• Can you see any scratches, dents, or loose elements upon closer inspection?
• Is the aperture ring easy to use?
• Can the focus ring on the lens be turned smoothly and evenly?

Optical Inspection

• Examine the front and rear lens for scratches.
• Hold your lens in a bright light source and examine it for dust, clouding, or fungal growth (fungus).
  Note: You can recognize fungus on your lens by a fine, spiderweb-like structure in the glass. If you find fungal growth, a thorough cleaning or, in the worst case, a complete replacement is necessary.

Aperture Mechanics

• Can the aperture blades move evenly?
• Do you find oily or sticky residue on the blades?

Tip: If your aperture is sticking, store your camera in a cold place (e.g., in the refrigerator for 30 minutes) and test again. If the aperture now opens and closes better, oil on the blades could be the problem.

3. Clean Camera and Lenses

Have you conscientiously checked your used camera and lenses? Perfect! Then you now know which areas of your devices need special cleaning and attention.

But even if you couldn’t find any significant defects or coarse dirt, it’s worth subjecting your camera and lenses to a basic cleaning regularly – because this actively prevents wear and ensures that the next technical inspection will also say: Everything is fine!

To clean your camera and lenses, proceed as follows:

Clean the Camera

1. Clean the housing with a microfiber cloth and, if necessary, some isopropanol (70%).
2. Dust the viewfinder and mirror carefully with a blower and a fine brush (Caution: Please do not apply any liquids to the mirror!).
3. Clean the film compartment and pressure plate with cotton swabs and isopropanol – and be especially careful with the light seals.

Clean the Lens

1. Front & Rear Lens:
   • Remove loose dust with a blower.
   • Use a microfiber cloth and special lens cleaner (no glass cleaner!) for further cleaning.
2. If you discover fungus on dust on the inner lens:
   • Only open your lens if you already have experience – otherwise, contact an experienced specialist directly.
   • Even with severe fungal growth, you should hand your lens over to a specialist for professional cleaning.
3. Focus Ring and Aperture:
   • If you find that the focus ring and aperture are difficult to operate, you should consult an expert who will professionally disassemble your device and re-grease it after an ultrasonic bath.
   • If your aperture blades are oily, it is also ideal to resort to professional cleaning.

4. Have the Camera Professionally Cleaned: when Does this Make Sense?

When reading carefully, you will surely have noticed that we advise you to have your used camera or lens professionally maintained, cleaned, or repaired in particularly serious or tricky cases.

In summary, you should consult a professional for the following problems:

• Shutter sticks or runs unevenly
• Aperture blades are oily or sticky
• Viewfinder or mirror is extremely cloudy or foggy
• The film transport mechanism is blocked
• The light seals are badly damaged

By the way:
We are very happy to be working with a professional camera technician who almost exclusively takes care of our cameras and lenses. For our customers, this means: If a defect or problem occurs with an item purchased from us under warranty, our technician will be happy to take care of the matter!

Conclusion: Properly Care for Cameras, Benefit in the Long Term

You see: It is worth carefully maintaining your used analog cameras and lenses and checking their functionality again and again.

Apply our step-by-step instructions regularly and enjoy the optimal condition of your devices in the long term. Analog cameras and lenses can be used for decades if you carefully maintain, clean – and safely store them: We recommend dry storage, e.g., in a dust bag with silica gel packets to avoid moisture and fungal growth. Don’t forget to remove batteries or rechargeable battery!

A nice side effect: Perfectly maintained cameras can be resold at a good price if necessary (depending on the model). Sounds interesting? Our purchase service (link!) is looking forward to hearing from you!

Our tip:
You can also find top-maintained used cameras in the best possible condition in our shop – from Leica to Nikon to Hasselblad, there is something for every photo fan here.
Take a look right away!

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