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Search results for "photomatix"

Making HDR Pictures (Part IIC)

HDR pictures generated by Photomatix per se are not good enough for stock photos.There are three main defects that needs to be removed before it is of suitable quality, namely artefacts, high noise levels, and severe chromatic aberrations.These defects exist even when maximal effort have been taken in the capture (Part I) and the generation (Part IIA and Part IIB) to minimise them. But now there is a high possibility - more than 90% from my experiences - to improve its quality to an acceptable... continue reading

Making HDR Pictures (Part IIB)

(This is a multi part article. The other parts are here: Part I, Part II, and Part IIA.)The four tabbed panels below the histogram in Photomatix's Tonemapping screen, are Tone, Colour, Micro and Shadow/Highlights.Tone works exactly like Levels in Photoshop.Color fine tunes, via the Temperature slider, the WB set before the HDR was generated. Color also gives control of the saturation in the highlights and shadows, and this may be set together with readjusting the overall saturation, as... continue reading

Making HDR Pictures (Part IIA)

When you load pictures, in RAW format, to Photomatix for HDR processing you specify what algorithms the processor is to use to correct for camera movements and objects motions in the scene. There are two algorithms for each.In camera motion correction I usually take the more compute intensive option, ie to align the picture by matching the features in the scene instead of the simpler vertical and horizontal corrections. However sometimes this complex algorithm fails. Then I revert to the simpler... continue reading

Making HDR Pictures (Part II)

In Part I, I wrote about the capture of images for processing into HDR pictures.I need to add something I left out, namely that the capture should be in RAW format and not JPEG.And the reason is that HDR processing creates lots of artefacts. To minimise this we start with minimising artefacts in the first place at capture. JPEGs create additional artefacts of its own, thus aggravating the "problem" after HDR processing.Of course it may not be any "problem" at all to your eye and your aesthetics,... continue reading

Making HDR pictures (Part I)

There are two steps in making a HDR picture, namely the capture and the processing.Actually this is the same as with the making of all photographs, but there are differences for the creation of HDR pictures.I will talk about how I capture images for HDR in Part I, and talk about the processing in Part II.So firstly, in the capture, the question is, what scene or subject makes for a good HDR picture?To me this will be one in which the scene's dynamic range is wide, exceeding maybe 5... continue reading

High Dynamic Range - HDR

You have probably heard it called HDR, whereas the purists calls it HDRI – High Dynamic Range Imaging.Dynamic range refers to a range of values between dark and light greater than that which is possible in normal digital imaging. The technique is the capture of a series of photos with different exposure values, and then uniting the images using a software tool.The origins date back to film in the 30s and 40s when Charles Wyckoff made the technique famous on the cover of Life magazine with a... continue reading

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