This is a brief excerpt from NoFilmSchool
Internal ND filters are incredibly helpful on set, especially if you’re in a situation where you are trying to move quickly. We’ve seen that the particular filters inside the Canon C100/C300/C500 are actually very specific to the cameras themselves, and they do a good job of blocking out infrared light, which starts to appear more with regular cameras as you block out visible light. It seems Canon has had some issues with keeping this area of the camera dust-free, so they’ve made some modifications. Check out the details below.
Here is the situation from Canon (thanks to Thierry at Digital Cinema Tools for sending this over):As part of the on-going feedback process with customers Canon has implemented a revised design in the filter and sensor units of the Cinema EOS System’s EOS C100 and EOS C500 digital cameras that further improves dust prevention performance.
The new design further minimises any possible ingress of dust within the sensor and filter array and, after additional development, the same upgrade can now be performed on all existing purchased EOS C300 cameras and it will be implemented in all future EOS C300 and C300 PL models.
The …
By: Joe Marine
via planet5D pinterest news http://pins.planet5d.com/canon-c100-and-c500-nd-filtersensor-dust-prevention-improvement-now-available-for-the-c300/
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