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Topaz InFocus sharpening
(minimum settings)

Sharpening with Topaz InFocus

After downsampling (or upsampling) with Bicubic, sharpening is advised to restore acutance (edge sharpness) for fine details. It is also appropriate after RAW conversion (depending on the converter) and also prior to printing.

My preferred tool for sharpening after downsampling is Topaz InFocus, which uses a form of deconvolution sharpening. The differences are often subtle, but I like the edge acutance it produces versus using Photoshop Smart Sharpen. Both are good choices.

Unless the image has inherent sharpness issues, one should generally prefer the minimal Sharpness = 0.01 as shown below, at least for the purposes of edge acutance of fine details.

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