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Dust on sensor, Sensor Brush = hogwash solution?
I see the most recommended treatment /du jour/ for the vexing "dust
specks on sensor" with digital SLRs is a brush that is charged up by spraying it with compressed air. Problem is, the company selling these brushes is extorting money from people, IMO, by charging around $100 for an item with a manufacture cost of pennies. Their website (http://www.visibledust.com) states that an ordinary nylon brush cannot be used for the following reasons: "Sensor Brush™ has been designed from the start specifically as a cleaning tool for delicate objects. There are many types of brushes in the market but they are not designed to be sensor-cleaning tools. For example, glues used in traditional brushes are quite destructive to the surface of the ND filter glass or cover glass. The polymers contained in many traditional brushes will cause a fatigued look on the glass due to the staining of the sensor. There are also many deformities in the brushes that are not visible by naked eyes. They can cause severe damage by creating microscopic scratches, which after accumulating overtime will create a fatigued look or catheter vision. We have done a lot of research in these brushes to bring the highest quality products made for the exact purpose of removing dust from delicate objects." I think this is absolute hogwash! - The glues used in synthetic brushes are in the ferrule, and will never contact the sensor surface. - Polymers (plastics) "staining" the sensor from an occasion light wipe on the surface? Balderdash! Maybe -- MAYBE -- if you let the brush rest for months against the sensor cover (also a plastic), some interaction may occur, but I doubt it. - Deformities in the brush not visible to the naked eye?! LOL! I have inspected a typical nylon artist's brush with a microscope and I see nary a "deformity" anywhere. This "Sensor Brush (TM)" product will surely go down in the history of photography as one of the worst scams of all time. How we are all going to laugh in years to come! I encourage everyone to go to an art supply store and buy a high quality nylon brush for a couple of dollars, and a can of compressed air. Voila! |
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