How to Focus an Unfocused Picture in Photoshop?

To sharpen a blurry image in Photoshop, the most effective method is to use the Unsharp Mask filter. Here's a step-by-step guide:

Steps to Sharpen a Blurry Image:

1. Open Your Image: Launch Photoshop and open the image you want to sharpen by navigating to File > Open.

2. Select the Layer: In the Layers panel (usually located on the right side of the screen), select the layer containing the image you want to sharpen. If your image is the background layer, you might want to duplicate it first (Layer > Duplicate Layer) to work non-destructively.

3. Apply the Unsharp Mask Filter: Navigate to Filter > Sharpen > Unsharp Mask. This filter is designed to sharpen images by increasing contrast along edges.

4. Adjust the Unsharp Mask Settings: The Unsharp Mask dialog box has three sliders:

   • Amount: Controls the intensity of the sharpening effect. Higher values increase contrast along edges, making the image appear sharper. Start with a low value (e.g., 50%) and gradually increase it until you achieve the desired sharpness. Be careful not to oversharpen, which can create unwanted artifacts.

   • Radius: Determines the number of pixels around an edge that are affected by the sharpening. A smaller radius (e.g., 1-2 pixels) is generally best for fine details, while a larger radius (e.g., 3-5 pixels) can be used for larger, more blurred areas.

   • Threshold: Controls the minimum amount of contrast required for the filter to apply sharpening. Higher values will prevent the filter from sharpening areas with subtle tonal variations (like smooth gradients), which can help reduce noise. A typical value is between 2 and 20.

5. Preview and Fine-Tune: The dialog box provides a preview of the sharpening effect. Experiment with the sliders until you achieve a balance between sharpness and avoiding artifacts like halos or increased noise. Zoom in to 100% to accurately assess the sharpening.

6. Save Your Photo: Once you're satisfied with the results, click "OK" to apply the Unsharp Mask filter. Save your photo by going to File > Save As and choosing your desired file format (e.g., JPEG, PNG, TIFF). For web use, JPEG is often preferred. For printing, TIFF is a good option.

Tips for Best Results:

• Work Non-Destructively: As mentioned, duplicate the layer before applying the Unsharp Mask filter. This allows you to revert to the original image if you're not happy with the sharpening. You can also use Smart Objects, which allow you to apply filters non-destructively and adjust them later.
• Sharpen Sparingly: Oversharpening can introduce unwanted artifacts and noise. It's better to err on the side of undersharpening than oversharpening.
• Sharpen at the End of Your Workflow: It's generally best to apply sharpening as the last step in your image editing workflow, after you've made all other adjustments like color correction and noise reduction.
• Consider Selective Sharpening: Use layer masks to apply sharpening only to specific areas of your image. This can be useful for sharpening details in a subject's face while avoiding sharpening the background.