Changing lenses on your camera when you are in the field can cause dust and debris to land on your sensor when it is exposed. The 12-pack of Type 4 Sensor Swab Ultra from Photographic Solutions features 33mm wide swabs for medium format sensors. They're designed to clean oil, dust, and debris.

You can also use these swabs to clean other sensitive or hard-to-reach optical surfaces. These swabs have pointed corners that are designed to more efficiently clean the space between the sensor and the baffle without leaving scratches.

Compatible with CCD and CMOS Sensors    Cleans Oil, Dust, and Debris from Sensor    Absorbent 33mm Wide Sensor Swab    Individually Wrapped Swabs

Related Questions and Answers

Q: 1. Do you have to use a liquid solution with these?

A: Yes, these swabs are meant to be used with Eclipse, the optic cleaning solution made by the same company as the swabs, Photographic Solutions (aka PSI, Photosol, Inc). There is a video on their website that will show you how. I have a 2 oz bottle and it has lasted for years. A note that not all sellers will ship Eclipse so look for an online dealer who will, or pick it up at a local store that carries it. Eclipse is safe and pretty harmless but has methanol in it which is flammable.

Q: 2. Has anyone experienced damage to the sensor or optical filter? How did Photosol react? Did they honor their guarantee, and was the process painless?

A: I will leave this answer to the very few people who needed to use our guarantee. Some of them have posted to our Web or FB pages. Suffice it to say, if you follow our procedures, with our products, it is highly unlikely you will ever need the guarantee. But if you should, we honor it, as we have done about 6 times since 1997 when we introduced the world to sensor cleaning. Everyone else just copied us. That is why we are still the only company with a guarantee and still the only sensor cleaning products recommended by almost all of the camera, optics and filter manufacturers.

Q: 3. Does the Eclipse Optic cleaning fluid has the expiry date?

A: The manufacture does not list an expiration date on the Photographic Solutions Type 3 Sensor Swab Ultra for FX or Full-Frame Sensors (12-Pack, 24mm).

Q: 4. I have a Fujifilm X-T20 and X-T3 what swab size should I get? Both are listed on type 1 (20mm) and type 3 (24mm). Please advise, thank you in advance.

A: You would want to use the type 3 on your Fuji X-T20 and X-T3.

Q: 5. Is this compatible with Canon R5?

A: Yes, the Photographic Solutions Type 3 Sensor Swab Ultra (12-Pack, 24mm) (B&H# PHUST3) is perfectly sized for swiping laterally across the 24mm x 36mm full frame sensor of the Canon EOS R5.

Q: 6. Is this compatible with the Sony A7III?

A: Hi, yes, this is compatible with the A7 III.

Q: 7. I have a Canon EOS RP. Will this kit work with its sensor?

A: hi--yes, this kit is compatible with the Canon RP.

Q: 8. Will these 24mm ones work for both D500 and Z6 II cameras?

A: These swabs are meant for full frame cameras, like the Z6 but you could possibly use them on the D500, although an aps-c swap would work much better as far as cleaning the sensor more efficiently and properly covering the sensor.

Q: 9. My sensor is 22 x 15 do I use a 24mm sensor wipe to clean it?

A: No, use the 17mm sensor swab.

Q: 10. What is the shelf-life of these (sealed and stored) in a camera bag?

A: The shelf life for these swabs are indefinite, since they are just swabs and not fluid, they will last a very long time.