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- 2. September 2009: New Kit Case
- 17. August 2009: Eclipse E2 Being Discontinued
- 17. June 2009: "Baked On" Dust ?
- 13. April 2009: Another Zeeion Blower Video
- 10. April 2009: For the Record
- 6. April 2009: Anti Static Blowers
- 31. March 2009: Filtered Blowers
- 31. March 2009: Dot Line Corp Adding Products
- 13. March 2009: Cost Comparison
- 12. March 2009: Bad Marketing
Archive for the Support Category
“Baked On” Dust ?
17. June 2009 by Curt Fargo.
I have recently been asked by a couple of different people about dust being baked onto a sensor (low pass filter) due to long exposures and heat being generated by the sensor. I had never heard this before, so I went to work investigating. I did see where some people are referring to dust that is held on to the sensor by moisture or pollen as being “baked on” and this is the same as what I refer to as “welded dust”. Thom Hogan coined the term “welded dust” long ago and we have used it ever since. Neither of these terms are the best to be using as they do imply high heat is used to hold this dust on, but that isn’t the case.
I tested the heat generated on the surface of a sensor’s low pass filter during a 60 second exposures. Using an Infrared Thermometer to monitor the temperature, all 4 Cameras (Canon 20D, 5D, 5D Mk II and 1D Mk II) had no significant temperature change from room temperature. Sure this is only 4 different cameras and from only one manufacturer, so it truly is totally conclusive but I do venture to say that dust isn’t actually being “Baked” onto the low pass filter.
Posted in Support | 1 Comment »
The Brush Method is Great BUT!
8. March 2009 by Curt Fargo.
I’m still getting calls & emails from consumers who are frustrated because they bought a brush from a retailer and expected to use it exclusively to keep their sensor clean.
The brush method is a good method of sensor cleaning but it cannot be used as your exclusive method just like you could never use a broom exclusively to keep your kitchen floor clean. When items get stuck (dust held on by moisture or pollen) or spilled (stray lubricants) onto the sensor, you MUST use a wet method.
I personally would NEVER use the brush method if I weren’t prepared to do a wet cleaning. This is because if you end up contaminating your brush by things like stray lubricants, you are going to make some nasty smears on your sensor.
So yes, the brush method is a good method but a method that is best used in between wet method cleanings.
This hold true for the Canon sticky method too (and all their clones too like eyelead, Dust-Aid, Matin, Pentax, Adidt & Erma Inc.).
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