REMOVING NOISE IN DIGITAL CAMERA IMAGES

If you shoot images with a digital camera, you can almost bet that the images (when opened in Photoshop) will have some unwanted noise. Most of this noise appears only within the Blue channel, and knowing that, you can go to the Blue channel and add a slight blur to just that channel. This helps get rid of the noise and leaves the detail in the other channels untouched. Here's how:

1.	Open your digital camera image in Photoshop.
2.	Go to the Channels palette and click on the Blue channelto make it active.
3.	Go under the Filter menu, under Blur, and choose Gaussian Blur. When the Gaussian Blur dialog appears, add a slight bit of blur (we can't give you a specific value; you'll have to experiment, but start at 0.5 and move slowly upward using the Up Arrow key on your keyboard).
4.	When the noise has pretty much disappeared, click on the RGB composite channel and continue with your regular image correction.