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<blockquote data-quote="yauman" data-source="post: 345012" data-attributes="member: 15418">The LPF for optical anti-aliasing is a very thin - very very thin piece of glass (just minutely frosted or made of lithium niobate glass) installed over the sensor and then there is another piece very smooth optically &quot;perfect&quot; piece of glass over that - so you are never ever touching the sensor when you clean - you are cleaning that piece of glass. On cameras with no LPF, there is just a piece of plain glass over the sensor - so you are cleaning that piece of glass.Because of the sandwich, one of the defects (which we have seen in older Canon Cameras) is a fungus growth can appear between the glass and the sensor - shows up as spiderly specs. Try as you might, it cannot be cleaned because it's between the sensor and the protective glass.&nbsp; (I have a Canon 10D with that problem - will see if I can take a picture to show you.)So, clean away all you DIY'er and don't stress over it - you won't damage the sensor!</blockquote>

[QUOTE="yauman, post: 345012, member: 15418"] The LPF for optical anti-aliasing is a very thin - very very thin piece of glass (just minutely frosted or made of lithium niobate glass) installed over the sensor and then there is another piece very smooth optically "perfect" piece of glass over that - so you are never ever touching the sensor when you clean - you are cleaning that piece of glass. On cameras with no LPF, there is just a piece of plain glass over the sensor - so you are cleaning that piece of glass. Because of the sandwich, one of the defects (which we have seen in older Canon Cameras) is a fungus growth can appear between the glass and the sensor - shows up as spiderly specs. Try as you might, it cannot be cleaned because it's between the sensor and the protective glass. (I have a Canon 10D with that problem - will see if I can take a picture to show you.) So, clean away all you DIY'er and don't stress over it - you won't damage the sensor! [/QUOTE]

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