Friday, April 20, 2012

A quick HDR

HSo, here's an example of where HDR comes in useful.  This is from one of my hikes on vacation.  The scene was kind of neat, nothing spectacular, but I couldn't get a good representation.  The white clouds and the dark water made it difficult to get one exposure that pulled out all the details of both.  Enter HDR!  I took 3 photos, each separated by 1.7EV (iirc, don't feel like doing math tonight.  The first image gets all the detail in the water, but the sky is quite washed out:



Now we've got an underexposed image, but can see a bunch of the detail in the clouds:



Here's the correctly exposed image:



It's a little better than the overexposed in terms of detail in the sky, but it's still pretty bad.  Lots of the water detail is lost as well.

  With HDR, I can combine all these exposures into a much more faithful representation of what I saw that day.  This still has a little bit of that "unearthly" look that a lot of HDR has, but that's mostly because I did it quickly.



Anyway,

2 comments:

  1. I still have to learn this. Seriously, it's so cool.

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  2. The magic is all in the software: Get Photomatix, and then it's just a matter of fiddling with the sliders until you find something you like.

    Well, software once you have taken your photos. Basically, take a number of photos separated by a stop or two (varying shutter speed, not aperture). Easy peasy pie. :)

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