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01/15/2008 10:03:48 PM · #1 |
I am looking for a good explanation of HDR. I kind of know what it is, but am looking for a tutorial about it. Any help would be great. Thanks |
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01/15/2008 10:06:35 PM · #2 |
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01/15/2008 10:19:42 PM · #3 |
This faq looks like a good explanation. |
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01/15/2008 10:25:07 PM · #4 |
...as well as the infamous Wikipedia. And another link on the same site.
Message edited by author 2009-09-14 16:33:02.
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01/15/2008 10:36:11 PM · #5 |
And here's a good tutuorial on tonemapping. |
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01/15/2008 10:52:19 PM · #6 |
I can save you a lot of time reading...here's the quasimojo nutshell version...probably not technically correct but for quick and dirty it'll do:
- HDR means you can combine the tonal information from multiple exposures. This means you can take exposure info from different exposures to give one image with parts of all the different exposures. Especially handy for images where there's huge lighting differences and a single exposure couldn't cover it all.
- To start making HDR shots all you need to do is to take multiple exposures from the same framing (tripod essential). Set your camera to Auto Exposure Bracketing (AEB) and try a range from +2 to -2. Set camera to high speed shutter and shoot the three frames. That's it for the fieldwork. Try experimenting with taking multiple exposures at different stops apart to capture the the entire exposure range.
- Get hold of Photomatix, CS3 or the beta for Wukong - all have HDR functions. Drag and drop the JPGs (can do with RAW but easier and often better with JPG I find) into the app and start playing. CS3 is pretty basic but much more realistic looking, Photomatix is the standard atm but overzealous use can kill images - but v. powerful with great output, and Wukong is in development but looks very promising so far.
That's it. If you want to take even further try time lapsing and gradient blending between them.
The real key I'm finding is in judiciously using HDR (as with all pp I suppose)...too little and it doesn't work, and too much and it looks overprocessed. Good luck and have fun :)
N
EDIT: p.s. I find it's worth shooting in RAW+JPG if you're shooting HDR just to save the hassle in converting RAW to JPG before you start HDRing.
Message edited by author 2008-01-15 22:55:42. |
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01/15/2008 11:20:14 PM · #7 |
From a previous post of mine when I shared the sources I found for information regarding HDR when researching it. Enjoy ... it is a whole new world.
For HDR conversion use the Local Adaptation method then open the Toning Curve and Histogram chart and drag the curve down to touch the leftmost point of the histogram. That is your starting point ... It should already look like a pretty decent image ... now put more points on the curve and play further with it ... ;)
The Equalize Histogram Method can sometimes give very quick and easy decent results with one click depending on the image.
Here are some further research resources for you all ...
//range.wordpress.com/2006/07/15/modern-hdr-photography-a-how-to-or-saturday-morning-relaxation/
//www.cambridgeincolour.com/tutorials/high-dynamic-range.htm
//www.popphoto.com/howto/3038/how-to-create-high-dynamic-range-images.html
//www.adidap.com/2006/11/25/photoshop-tutorial-hdr/
//www.naturescapes.net/072006/rh0706_1.htm
//stuckincustoms.com/?p=548
//www.luminous-landscape.com/tutorials/hdr.shtml
//dpchallenge.com/forum.php?action=read&FORUM_THREAD_ID=466859
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01/16/2008 11:46:28 AM · #8 |
This is great, guys. Thanks |
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