Few years ago, Canon introduced some sort of internal sensor cleaning system that (as far as I understand it) shakes the sensor off any dust it collected during use. This shake is very high frequency.
Questions
- How effective is this system? What kind of dust is it actually able to remove? What's your experience.
- Where does the removed dust go? As it probably stays inside how likely is it that it land on the sensor again?
- Has the system been improved since its introduction?
- Does Nikon have equivalent system that works in a similar fashion or do they have something else (or nothing at all)?
Answer
Shaking the dust does help, but it won't remove all the dust. Some particles will cling to the filter glass in front of sensor hard enough not to be shaken out. Moisture and fat particles will gladly help with the clinging. The sensor still has to be cleaned now and then, but interval is somewhat longer than without shake. Before important shootings, the sensor should be cleaned and checked manually, the shake system is not reliable enough.
The dust is meant to fall on an adhesive strip below the sensor, so it will work best if the camera is held horizontally in landscape orientation during the shake.
I know that Nikon started using anti-static tin oxide coating at some point, but Canon has used anti-static materials on self-cleaning sensors since 400D, so I'm not sure if they have improved anything since then.
Nikon has a similar system on many newer models starting from D60 and D90. Pentax cameras have had it since K100D Super and K10D.
No comments:
Post a Comment