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How to minimize dust getting in the sensor. If necessary how to clean it?

Joel Arvidsson

Joel Arvidsson

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Coming from a background of fixed lenses I get little stressed that you actually se the sensor while changening the lens. In a dslr camera you have the mirror covering the sensor, so that feels little more protected. Does anybody even reflect over this? or have god tips how to change to minimize the chance for dust to reach in the the sensor? Do you clean the sensor with special airspray? Or is my dust concern exaggerated? I mean we get dust on the eyes all the time and don't even notice it.
 
Technically speaking in RED the sensor is covered by the OLPF glass - so the sensor is in a sealed space and no dust should reach it directly. You will, however, inevitably get dust on the OLPF glass. To clean it - use something like this:

838868.jpg


http://www.bhphotovideo.com/c/produ...Dust_6694797_Arctic_Buttterfly_724_Super.html

The way this works is that you spin the brush AWAY from the sensor, which does two things - it removes any dust particles trapped in it and it charges it statically...
Then you gently brush (WITHOUT SPINNING the brush) the OLPF with single move over the area where the dust is (use the loupe to check first). The dust will get attracted to the brush as it is statically charged...
Remove the brush and spin again AWAY from the sensor. Repeat until the OLPF is dust-free...

Any major dirt that can not be cleaned by the Arctic Butterfly should be removed at a professional camera repair shop - it should not be too expensive...

Peter
 
Good practices keep your sensor clean. In the 4 years I had my red one, I never had to clean the sensor. I shot hundreds of days all over the world including Africa and India. Things like panning the camera down wind for lens changes and keeping the lens port covered. It's not that big of a deal.

Nick
 
Sensor Dust

Sensor Dust

Just shot this on my Scarlet.

Is this dust on the sensor or the OLPF?
 

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Again, dust cannot get on the sensor... the OLPF is the protective layer in front of the sensor - many people think this is the actual sensor, but you're seeing the sensor through the OLPF (optical low-pass filter)

So it's on your OLPF... or the rear of your lens.
 
if it is sharp, it'll be on your sensor but as it stands, the guys are right. it is likely on your low pass filter. it looks a piece of dirt so blow it out with a rubber blower. i never use compress air. on a few occassion, it left undesirable residule and on another the uncontrollable air pressure has pumped something inside. if it is a stain, i cleaned ours with my onion or garlic breath. cleans out really well... just kidding. well, it killed something anyway. i use a cotton tip applicator with about 1/4 or 1/2 a drop of rosco lens cleaner and with a little pressure, clean in a circular manner. takes a bit of practise so try with a glass till you get the hang of it. rotate the cotton applicator as you go along. it worked for me. if you are not comfortable doing it then send it to the experts.

cheers.
 
Jack Shanahan said:
I already have a rocket but is that really the best solution?

-- if u look closely there are several of them...
Click to expand...

Yes, it is the best solution. I think you may be over-thinking this.

Simply remove the body cap, turn the camera so the lens mount points down towards the floor, and gently puff some air from the rocket blower onto the OLPF. The downward attitude of the camera will allow any particles to fall out, and not remain inside the body.

Then, re-test the camera by shooting some images pointed at a white or light colored wall.

Peter Strietmann said:
You should run over to B&H (Beards and Hats)
Click to expand...

Hahahaha never heard it called that. So awesome. I love the guys at B&H, always entertaining.
 
Jack, I would strongly advise you to get one of the lighted loupes and just have a look at the olpf. It will be very obvious if there is dirt or any other obstruction on it when viewing with the loupe. I use the arctic butterfly loupe. I'm not a big fan of the brush as it has left smudges in the past.
 
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