Nikon D40 vs Pentax ist DS vs Canon 300d.

[andrew99]

I would only get it cleaned if there is dust showing on your pictures.. the sensor is so delicate I wouldn't risk it for no reason.

My best advice is don't ever use a can of compressed air on your camera or lens. Please don't ask me how I know this.

 

[anubis404]

Even if you bounce the air off something?

 

[Syndac]

Even if you bounce the air off something?

When your sensor needs cleaning, you'll notice it in your pictures. The slightest speck of dust will show up as a dark blurry spot which ruins the picture. You shouldn't be using anything other than a sensor cleaning kit which you can buy at most camera stores. I've had my D50 for a year and I've only cleaned the sensor once when I bought it (used) because it desperately needed it.