So, you have to get rid of the dust on your sensor. It happened to me, too. One day the amount of dust spots on the sensor of my Nikon D70s was simply too much. I had no idea what would follow.
For that very moment, I bought a Speck Grabber. I didn't know what to expect, but from the sheer look of it I thought that this might not work. The Speck Grabber is a tiny stick with an adhesive tip. There's no way to remove a single dust grainule with that thing without touching the surface of the sensor (or rather, the AA filter) and smearing it. This thing is a complete waste of money (and time). Don't even think about it, it the most superfluous thing in the world.
A common advice is to use a bellow. You can buy one of the expensive ones that are made especially for mad photo enthusiasts (with the craziest names, its really a "pimp my bellow" show), or you can go to the next drugstore and buy a clyster bellow (just make sure that they do not sell you one that has been treated with talcum powder or you'll be in BIG trouble). I'm a photo guy, I bought the photo guy version. The problem with the bellow is that it of course has to suck in the air on one end - if there are dust particles in the air around you (and they are), you'll blow them onto your sensor together with the air.
In the end, you might remove large dust particles like small hairs or something from the sensor with the bellow, but you'll also blow tiny dust particles onto the sensor. Trust me, it happens that way. I cannot recommend using this technique because most of the time, nothing is gained - if you have a large dust particle on your sensor, move the mirror to inspection position, hold the camera body so that the sensor points downward, and shake it rapidly. Large dust particles will fall out of the mirror chamber that way. And if they don't, and stick to the sensor surface because of their wicked nature, pumping air with more dust particles in it doesn't help solving the problem.
At that point, I was quite unhappy already, and I still hesitated to do a wet cleaning. So I went for the nylon brushes. "They" tell you that you can charge the nylon fibres with a bellow or compressed air so that it will attract dust. Blow the brush, one swipe across the sensor, blow the brush, another swipe, etc. etc. The problem: you can't keep that nylon brush clean for very long. You have to be very careful with the compressed air, too. Some of the cans do not only contain compressed air, and chances are you might smear your sensor with the secondary contents of the can. I found it hard to really produce that "charge". I swiped the dust into one corner of my D70s' sensor nicely, but I couldn't remove it from there. Conclusion: it ain't working.
At that point, I had spent something like 10€ for the Speck Grabber, something like 15€ for the bellow, and something like 20€ for nylon brushes and a can of compressed air. And the sensor was still dirty.
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