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Uploaded 19-Mar-14
Taken 15-Mar-14
Visitors 471

6 of 12 photos
Categories & Keywords

Subcategory Detail:
Keywords:Arches National Park, Dean Chiang, Delicate Arch, HDR, Utah, Xyclopx, hike, moab, panorama, rock, view
Photo Info

Dimensions10000 x 1480
Original file size14 MB
Image typeJPEG
Color spacesRGB
Date taken15-Mar-14 19:11
Date modified26-Jun-14 22:25
Shooting Conditions

Camera makeCanon
Camera modelCanon EOS 5D Mark III
Focal length33 mm
Max lens aperturef/2.8
FlashNot fired
Exposure bias0 EV
Exposure modeManual
Exposure prog.Manual
ISO speedISO 200
Metering modePattern
Enclave of the Arch, by Dean Chiang, Xyclopx

Enclave of the Arch

Delicate Arch
Arches National Park
Moab, UT

This pano wraps a full 360deg and is constructed out of 22 slices with 15deg rotations between each slice. Each slice is an HDR merge of 7 images, shot as a bracket from -3EV to +3EV. So, 22 * 7 = 154 images combined to make this picture. Though the sorting and processing required to combine the ~150 shots was significant, that was just the beginning. After doing the 22 HDR merges, and then stitching them into a complete panorama, I found many ugly artifacts in the result. So, into Photoshop it went. The typical HDR halo problem had to be fixed with tons of tedious cloning. The stitching algorithm also decided to eliminate my friend Kevin from the shot but leave his shadow!, so, he had to be added back in. After some other this and thats, the final 33,469px * 4,952px = 165.7 MP picture was complete. Technical challenge aside, it was FREEZING, my limbs were NUMB, and I had a hell of a time not slipping down the hill where I barely had enough space to perch my tripod and to stand behind it. Took about two hours or so to wait for sunset and take all the shots. I've heard stories of photographers doing far worse, but damn, it SUCKED getting these pics. Was it worth it?

For a slightly cropped version (to see more detail):

For the whole story behind this picture, please visit my blog:

Canon EF 24-70mm f/2.8L II USM