You can buy more mega pixels.
You can look for a more powerful optical zoom.
There are interchangeable lenses, and even bigger LCD screens.
All of these things can help you get better pictures from a digital camera, but none of it makes a difference if you don’t keep your camera clean.

So in keeping it clean, there is a hierarchy you should follow.
First, there’s the lens.
Second, the LCD screen.
This will make sure that you and your camera are seeing the same things.
Next go ahead and clean the view finder and the camera body. Now you won’t look like a camera slob.

Allsop's Clearshot cleaning Pen is two sided; one with a micro fiber tip for the lens and screen, and the other with a soft, fine retractable brush to get the dust and goop out from all of the nooks and crannies of your camera’s shell.
It comes with a few extra cleaning tips and protective cap, and it is compact enough to fit in most average-sized camera bags.

 

 

Allsop Clearshot Dual Action Cleaning Pen.