How to use sharpen tools?
 

How to use sharpen tools in photoshop?
how many method to use photoshop sharpen tools?

Ok, I don't have enough idea about this. So I personally suggest you to take a look on Youtube.

Clipping Path Service

1. Select the Sharpen tool. (If the tool isn't visible, hold down the Blur tool.)
2. Do the following in the options bar: Choose a brush tip and set options for the blending mode and strength.
3. Drag over the part of the image you want to sharpen.

sharpen tool help to sharp an image with this help you can increase bright the image.

sharpen tool help to sharpen an image with this help you can increase bright the image.