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The Three Rivers are Icy! by Paul Heckbert

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About This Gigapan

Taken by
Paul Heckbert Paul Heckbert
Explore score
Print Pricing
$7.00 to $940.00
0.33 Gigapixels
Date added
Jan 30, 2014
Date taken
Jan 29, 2014

The confluence of the Allegheny River (top) and Monongahela River (right) joining to form the Ohio River (left), in Pittsburgh. The exposure here was set to show the ice well, not to make a pretty picture of downtown. The rivers are icy because temperatures dropped to -10F the night before. Thanks to Jim Albright & Julia Lentcher for balcony access, and to David Bear for coordinating the photo shoot. For a prettier picture, see gigapan.com/gigapans/149078 . For more panoramas shot from this building (The Trimont), see gigapanorama.org Will open in a new tab or window

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Stitcher Notes


GigaPan Stitch.Efx version 2.3.0306 (Macintosh)
Panorama size: 328 megapixels (39292 x 8352 pixels)
Input images: 33 (11 columns by 3 rows)
Field of view: 153.8 degrees wide by 32.7 degrees high (top=3.0, bottom=-29.7)
Vignette correction on: c1=-0.114 c2=0.00245
Use BRISK feature detector
Original image properties:
Camera make: SONY
Camera model: DSC-RX100
Image size: 5472x3648 (20.0 megapixels)
Capture time: 2014-01-29 17:06:03 - 2014-01-29 17:08:17
Aperture: f/4.9
Exposure time: 0.00625
ISO: 200
Focal length (35mm equiv.): 100.0 mm
Digital zoom: off
White balance: Fixed
Exposure mode: Manual
Horizontal overlap: 38.0 to 44.1 percent
Vertical overlap: 35.7 to 36.6 percent
Computer stats: 3840 MB RAM, 2 CPUs but using at most 1
Total time 10:09 (18 seconds per picture)
Alignment: 31 seconds, Projection: 54 seconds, Blending: 8:43
(Preview finished in 2:22)
Color Adjustments:
gamma: 1.30
temperature: 65

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