DPP Home Technique Software Technique Extending Depth Of Field

Tuesday, June 26, 2007

Extending Depth Of Field

Using multiple exposures and sound camera and software technique, you can defy the laws of physics

Selective Sharpening

In two-dimensional images, the appearance of the recession of space can be accentuated by controlling focus selectively. You can defocus areas of an image selectively in-camera. You can defocus areas of an image selectively with software. You can sharpen an image selectively, making some areas of an image appear sharper than others. You can use a combination of all three effects.

Applying sharpening selectively:

Extending Depth Of Field 1 Duplicate the Background Layer. (Layer > Duplicate Layer)

Extending Depth Of Field 2 Set the layer's Blend mode to Luminosity. (Use the drop-down menu in the Layers palette; the default is Normal.)

Extending Depth Of Field 3 Apply the filter Unsharp Mask. (Zoom to 100% screen magnification. Apply Filter > Unsharp Mask; set a maximum Amount, precise Radius and minimum Threshold.)

4 Set the layer's Blend If sliders to 35/55 and 225/245 to remove the effect from shadows and highlights. (Double-click on the layer icon. Hold the Option/Alt key to split the Blend If sliders.)

5 Add a layer mask. (Layer > Layer Mask > Reveal All)

Extending Depth Of Field 6 Use the Gradient tool or Brush tool with varying opacities of black to remove sharpening selectively.


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