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Making HDR pictures (Part I)     posted on 19th of august, 2008

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 EV, and where lots of details in the highlights and shadows are necessary for the picture you envisaged, or that it may make a different kind of picture altogether, something not ordinarily seen or photographed.

Secondly the questions are what exposures to capture and at what ...

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Tags: capture ev hdr photography photomatix

Comments (2)

I had gotton HDR Finish V1.. and I have no clue how to use it.. there is not tutorials or directions on how to use this software. I had emailed Dosh several times and haven't gotton a word.. $199.00 down the drain. - posted by Ladykassie on September 02, 2008
Ya HDR photography is surly a lot of fun!! I finally downloaded photomatix and I'm looking forward to using it soon! - posted by Mattography on August 19, 2008

This article has been read 479 times.
Making HDR Pictures (Part II)     posted on 19th of august, 2008

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, but it will certainly be if you intend to submit the HDR image for sale as stock photography.

So all the processing discussed here is aimed to attain a processed image quality ...

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Tags: hdr photography photomatix processing stock

Comments (2)

Oh Lawrence, your pictures inspired me to do more HDR! ohhhhh, how sweet of these blog entries. - posted by Doggyhugs on August 27, 2008
you have some nice HDR stuff Lawrence - posted by Litifeta on August 20, 2008

This article has been read 369 times.
Making HDR Pictures (Part IIA)     posted on 21st of august, 2008

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 one.

In object motion, the algorithms are for the presence of a moving objects, and something Photomatix called "background movement". The latter includes things such as ripples, leaves on trees, etc. Again I usually make Photomatix work harder to treat leaves, clouds and ...

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Tags: digital hdr photomatix processing tonemapping

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This article has been read 141 times.
Making HDR Pictures (Part IIB)     posted on 22nd of august, 2008

(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 set by the ...

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Tags: digital hdr photomatix processing tonemappping

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This article has been read 140 times.
Making HDR Pictures (Part IIC)     posted on 26th of august, 2008

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 level....

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Tags: artefacts ca hdr noise photomatix

Comments (1)

Thank you for the article, Lawrence! Now I'm inspired to try some HDR! - posted by Jinlide on September 15, 2008

This article has been read 163 times.
 
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Lawrence Wee (Espion)
Singapore, SG


 
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