Chronos > Chronos User Discussion

Dust on sensor. Any tips to get rid of and to avoid?

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clkdiv:
Hello! Now that I got more light for filming with my Chronos 2.1, I am able to close the lens aperture much more than before. Now this makes so much dust on the sensor showing up that it becomes critical.

Although I  used rocket blowers to clean the sensor on my DSLRs, I wonder if there is anything special about the Chronos sensor, if someone has some tips, and even more, if there are any suggestions on how to avoid it? I feel really uncomfortable dealing with such an expensive sensor.

Thanks! Martin.

Nikon1:
Well first off, there is an Filter Glass in front of the actuall sensor itself, which isnt that expensive to replace.
 Then, there are those gel sensor cleaner kits, with an Gel cleaner and Special Sticky tape to clean the sensor.
 Bought mine from a name Brand at a local camera shop for like 30€ with a bunch of tape included, i dont know how much i would trust those China-Things from Ebay but heres a link, so you get the idea to what i mean:
 https://www.ebay.de/itm/CCD-CMOS-Sensor-Staub-Reinigungsstift-Jelly-Cleaner-fur-DSLR-Blau-ersetzen/401582965352?hash=item5d8035c268:g:7fQAAOSwXl9bdkHN
 Those always worked great for me, even for cleaning my sensors on location. I would make sure to get one with an propper Metal case and a Sealing cap for the Gel.
 Number of uses of those Gel Cleaning sets is limited by the amount of Tape it comes with (for some you can order refill-packs of Tape which i did for mine, mine worked great for over 2 Years now of intense use)
 The 2.1 Sensor gets dirty faster because its a lot bigger in surface area, so also more area for dust to land on.

Nikon1:
Also, keeping your backsides of your lenses Clean alone can help to avoid a lot of the dust coming into the camera in the first place.

clkdiv:
Okay, thanks, so nothing really special about the sensor compared to a dslr. Good to know about the protective glass.

Since I haven't looked into my Chronos I wonder how the active cooling is involved in sucking in dust. I assume the sensor is completely protected from cooling air?

Thanks! Martin.

Nikon1:
Sensor does not collect dust from cooling air, unless you use some kind of strange adapter which will allow airflow from the Fan to the Sensor via the front side. When using Standard C-Mount lenses or adapters, this is not a problem, but i had some Air Leaks with an Self-Built adapter which was so large that it allowed some air from the Fan in the Front to get directly to the sensor, but that was just a bad adapter design by my self. Unless you do any modifications to the Camera itself and as long as you use it with C-Mount Lenses/ Adapters, cooling air will not be the reason for dust on the Sensor, there are air Seals all around the sensor, so no problem here. Watch the official 2.1 Teardown from tesla500 if you want to know more about that, he explains the airflow quite a bit in this video. In your kind of usecase most dust will most likely come into the Camera while changing lenses, for example from a dusty enviroment and as i allready said from dirty/ dusty Lenses. the more you change lenses/ the Longer you keep the Sensor exposed to the Air, the more dust it will collect. Some DSLM and DSLR People which are really afraid of dust on their sensor will even go as far as making sure to allways have the Sensor facing the ground, when there is no lens attached when Changing the Lens for a few Seconds as to avoid dust collection from Gravity. While this can seem a bit extreme, it does actually help to avoid dust in the First place, also it helps to allways keep on lens-Caps and Camera-Body-Caps when nothing is attached to them. An other Note: when cleaning Sensors, always make sure to use the propper Cleaning tools to make sure not to SCRATCH your sensor. Those Gel cleaning kits are my favorite, because you just tap the glass and the dust comes right off, no risk of scratching. other kinds of cleaning kits need you to wipe the Sensor which allways puts you on a risk of draging across some small bit of dirt across the sensor, which will cause a scratch. so be carefull, especially if you dont have a lot of experience. Also, most serious camera shops will also provide a Sensor Cleaning service, most of them should proppably agree to also clean the Chronos Sensor, since its basically nothing else then an DSLR-Sensor. They have the Propper tooling to clean it professionaly and also trained people with a lot of experience. So if you or anyone else is unsure about cleaning it themselfs, maybe let it get cleaned at a camera Shop rather than damage anything.

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