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The 23 frame Panoramic HDR (and how I did it)

Wednesday, August 27th, 2008

As many will know, I enjoy taking Panoramics and HDR though I rarely combine the two and this is why…

First the finished product:

Battersea HDR Panoramic G4 final
Now the process:

I started with 23 files at 3 different stops (-1EV, 0EV & +1EV) that’s 69 files in total, each around 6MB

I first tried to stitch the three stops separately using Photoshop (under automate and photomerge). Boy was this a mistake. If you use Photoshop to merge many files the results are not consistent each time you run it. This meant that no file matched another, which makes HDR practically impossible.

I tried many iterations (each one takes around an hour to process BTW) including:

  • reducing the number of originals
  • making sure that the files were loaded into Photomerge in the same order (BTW this drastically affects the final result!)

After about 2 days of trying to get something that I could HDR I gave up on this method. I decided to try three new ways of producing the HDR pan

  1. Photomerge the 0EV image and produce three images using adjustment layers — this worked, but not too well:

  2. Second I tried to HDR one image (Photomatix allows this). Again not much joy:
  3. Finally I tried the option that was least appealing — HDR the 23 images separately and then Photomerge. This meant that I would have 23 files around 20MB each.

The third option took a long time, but I think it worked. In the end I had a 12163×6069 pixel HDR Panoramic of Battersea Power station (over a GB in size). After a bit of cropping and compression the final image I now have a 92266×4959 4.6MB file. Here is a slightly smaller version:

Battersea HDR Panoramic G4 final

New York 2008 (part 8) – Symmetry

Thursday, August 14th, 2008

New York Architecture allows for some spectacular shots:

Empire States Building:

New York 112

New York Times Building:

New York 054

New York 2008 (part 6)

Monday, August 11th, 2008

One photo today. A few more still to come!

New York 062

I love the light on this one.

New York 2008 (part 5)

Sunday, August 10th, 2008

New York 155

New York 161

New York 179

New York 2008 (part 4)

Friday, August 8th, 2008

New York 065

New York 168

New York 088

New York 2008 (part 3)

Thursday, August 7th, 2008

New York 108

New York 147

New York 070

New York 2008 (part 2)

Monday, August 4th, 2008

New York 096

New York 101

New York 171

New York 2008 (part 1)

Monday, August 4th, 2008

Hi,

As promised, here are some of my best pictures from the New York trip in March. They are also the first pictures that I took with my Mark III. Quite a few more to come!

New York 122

New York 069

New York 040

New York 034

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