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GreenspanCt2 by eesnyder

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About This Gigapan

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Taken by
eesnyder eesnyder
Explore score
29
Size
3.15 Gigapixels
Views
154
Date added
Feb 09, 2013
Date taken
Jan 31, 2013
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Description

I am posting this one mainly for pedigogical purposes, not because it is a particularly interesting panorama (but you knew that).
1. As you zoom into the most distant trees in the center of the view you find things out of focus. Lesson: don't just eyeball the depth of field by closing the aperture and looking through the viewfinder. Take test shots and zoom in to confirm that things are really as sharp as they should be. Spending a couple more minutes setting up the shot can make the difference between a great panorama and a very big snapshot.
2. Note how the middle of the pano is darker than the rest. Here, I followed the rules and turned off auto exposure, but midway through the shoot, a big cloud came by and cast shadows across the scene. I tried to compensate manually but it was insufficient. Not only is the exposure insufficient (particularly visible in the sky), the shadow removes the highlights from the tree branches. Lesson: if a cloud comes by, pause the shoot and hope for the best.
3. The ghost of the car in the street is hard to miss. I paused for most of the traffic but this one slipped through. Had I been on the ball, I would have jotted down the column and row of the frame as soon as I realized the mistake. I could have gone back and taken a fill-in shot. Lesson: be ready to write things down.

The first couple of times I ran stitch, I was alarmed at my CPU temperature. This pano took a while to calculate and my CPU was 70C by the time it finished. It probably would have gone higher if it had run longer. To rectify the situation, I installed a liquid CPU cooler with radiator and 12 cm push-pull fans. I ran stitch again and the temp never got over 33C.


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Stitcher Notes

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GigaPan Stitch.Efx version 2.1.0161 (Windows)
Panorama size: 3151 megapixels (55384 x 56904 pixels)
Input images: 230 (23 columns by 10 rows)
Field of view: 92.9 degrees wide by 95.5 degrees high (top=90.0, bottom=-5.5)
Settings:
Vignette correction on: c1=-0.0163 c2=0.000205
All default settings
Original image properties:
Camera make: NIKON CORPORATION
Camera model: NIKON D7000
Image size: 4928x3264 (16.1 megapixels)
Capture time: 2013-01-31 16:10:15 - 2013-01-31 16:27:56
Aperture: f/29
Exposure time: 0.00625 - 0.0125
ISO: 800
Focal length (35mm equiv.): 210.0 mm
Digital zoom: off
White balance: Fixed
Exposure mode: Manual
Horizontal overlap: 52.1 to 58.5 percent
Vertical overlap: 56.2 to 61.2 percent
Computer stats: 16344.3 MB RAM, 6 CPUs
Total time 26:57 (7.0 seconds per picture)
Alignment: 3:02, Projection: 5:13, Blending: 18:42
(Preview finished in 14:43)

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