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SD14 red layer versus SPP

Started Jan 9, 2018 | Discussions thread
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xpatUSA
xpatUSA Forum Pro • Posts: 23,016
SD14 red layer versus SPP
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Currently, my SD14 has the dust-cover removed and, for visible light shots, I put a Schott BG38 UV/IR blocking filter on the lens, went out and took a test shot. Because the BG38 sees a bit of near IR, I was looking at the red layer in RawDigger from the aspect of micro-contrast and focus. The focus was perfectly OK - but micro- or local-contrast was lacking, as is common in RawDigger layer views. When an image lacks micro- or local-contrast, it is often considered to be "soft" or even "out of focus"

Since most of the acutance we see in converted images is due to the converter processing, I though I would process the layer image best I could in RawTherapee and compare that with a default-processed SPP image. Here is the result:

Please view original size

The wires, the foreground tree and the transformer tell the tale, I reckon.

Also notice the overcast cloud detail revealed by RT and the great improvement of detail almost hidden by veiling flare.

In RT, the processing was mainly CBDL wavelet and RL deconvolution, with some impulse NR and Levels.

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Ted

 xpatUSA's gear list:xpatUSA's gear list
Panasonic Lumix DMC-LX1 Sigma SD9 Panasonic Lumix DC-G9 Panasonic Leica DG Macro-Elmarit 45mm F2.8 ASPH OIS Sigma 17-50mm F2.8 EX DC OS HSM +11 more
Sigma SD14
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