Re: how to keep the clarity when reducing an image?

There really is not a way to have the same clarity in a lo res image as in your high res image, it is a matter of pixel physics.

In a 10" 300 dpi image, you have 3000 pixels to represent your image. If you go down to 1" you only have 300 pixels to represent the same image.

You can try to cheat this by adding some extra sharpening, or duplicate your layer set the top layer to mode hard light, and then turn the opacity of the layer down sp you don't over sharpen (you may need to lighten or darken your image depending on if the starting pixels were high or low key).