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Nikon D3x at 97.5 megapixels with PhotoZoom Pro

See also Jan 2 entry. Yesterday I showed a simple upscaling with RAW Developer to 200% (linear) or 97.5 megapixels.

Below are two more takes—the same image was processed by RAW Developer at native resolution (6048 X 4032) then upsampled by PhotoZoom Pro 2.3.4 to 200%, using S-Spline XL and Photo - Detailed with Unsharp Mask Radius = 3.00.

PhotoZoom Pro has numerous algorithms and parameters, so don’t assume that this example is the best result it can produce—it’s just one variant. To my eye, this variant looks a little artificial, but the edge acutance might work very well for printing. See the next example below for comparison.

Mouse over this image to compare to the Spline Grained example further below. The edge effects are where the key differences lie.

PS: don’t assess color on these images, the light was flat and blue and no attempt was made to make the color look good.


D3x scaled to 97.5 megapixels with PhotoZoom Pro
Nikon D3x + Coastal Optics 60mm f/4 UV-VIS-IR APO macro @ f/5.6

Another version below, also with PhotoZoom Pro: Spline with “Photo Grained” and a dash of wide-radius Unsharp Mask in Photoshop CS4 {8, 50, 0}. The Photo Grained result looks natural to me. Mouse over it to compare to yesterday’s example. The results are very similar.


D3x scaled to 97.5 megapixels with PhotoZoom Pro
Nikon D3x + Coastal Optics 60mm f/4 UV-VIS-IR APO macro @ f/5.6

Many hours of experimentation are needed to gain experience as to what works best for various types of images. Throw in a dash of personal preference, the type of material for printing, and there are endless decisions to make.

 

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