Category: Post Processing

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SPP vs. X3F Tools: Noise and noise reduction (part 2)

After analyzing the noise of the Merrill sensor and noise reduction in SPP 6.3 and X3F Tools, I’ve taken a closer look at the X3Fs of the Quattro sensor. For this I’ve taken 7 X3Fs with the DP2 Quattro, with sensitivities ranging from ISO100 to ISO6400, and developed and converted them to DNG format with ...

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SPP vs. X3F Tools: Noise and noise reduction (part 1)

I didn’t even notice how much SPP “pimps up” the X3Fs before I started to experiment with the X3F Tools converter which doesn’t know the many particularities of Foveon sensors and the many tricks in X3F image editing. Since it is too many insights that I could gain by comparing both converters, I’ve decided to ...

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Fascinating: experimental algorithm removes reflections and distracting elements in the image foreground

Even though there are ways and means to remove annoying reflections in photos that have been taken through glass (e.g. with a polarisation filter), there is nothing wrong with having the possibility to get rid of them later on with a fully automatic image editing algorithm. The software filter, which is being developed by a ...

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SPP 6.3 vs. X3F Tools (Kalpanika): coloured vignetting and noise performance

Yesterday I uploaded a couple of photos which I had taken with the DP2 Quattro as X3Fs, then converted into the DNG format with X3F Tools (Kalpanika), and edited in Lightroom 5.7. Most of these photos are nothing out of the ordinary, but in two shots, taken only seconds apart, it is possible to see ...

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New photos taken with the DP2 and more insights into the Kalpanika alias X3F Tools

If you have never heard about Kalpanika, aka the X3F Tools, then you should have a go at this blog entry. In short, it is a X3F to DNG converter with excellent noise reduction, but at the moment there is still a long row to hoe. One of the current issues is the “Italian Flag” ...

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X3F Tools: a cumbersome but very effective X3F-to-DNG converter

The X3F-to-DNG converter which was developed under the codename “Kalpanika” has now been released as “X3F Tools 0.53”. As far as I understood it, it was originally planned to make Kalpanika into a full-fledged RAW converter. This task was now abandoned as, according to the four-men-strong programming-team, there was no way to get rich with ...

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A three-minute-long video shows the restoration and coloration of a badly damaged photo

Almost two years ago I wrote about the ColorizedHistory Community on Reddit, whose 85,000 members have devoted themselves to colourising historic black-and-white photographs. In order to give anyone who might be curious an idea of how much work is involved in this, I included a video tutorial by Mads Madsen, who was one of the ...

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SPP 6.2.1 vs 6.3: is it possible to tease out more sharpness of the X3Fs with the newest version?

I was curious when Sigma launched SPP 6.3 and the change log claimed that the algorithm had been improved to make the Quattro X3Fs even sharper. Since optimising the RAW converter usually only improves the image quality a tiny bit, I was not expecting to see a huge difference when comparing 6.3 and 6.2.1. I ...

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Stephen McMennamy’s “#ComboPhotos”: intentionally easy to spot photo manips

As the creative Director of BBDO Atlanta, a branch office of the advertising agency BBDO, Stephen McMennamy is very well versed in image and video editing. After all, the majority of his work consists in designing and editing content to efficiently convey certain sales messages. Of course, as we all know, these must not in ...

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Sigma News & Rumours: Sigma introduces the 24-35mm f/2 Art lens and launches SPP 6.3!

The rumours that came up yesterday where true – today Sigma introduced the 24-35mm f/2 DG HSM Art! For us users of the APS-C format the zoom is less interesting, since the already available 18-35mm f/1.8 DC HSM Art already covers a wider zoom range and is faster by 1/3 of an aperture stop. As ...