ML198680011
作者
Anne Olsen 该用户提供的媒体文件 档案
日期
地点
Pocosin Lakes NWR--Pungo Unit
Washington, North Carolina, United States
该地点产生的媒体文件 配图名录- 年龄
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- 性别
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观察细节
Estimate from the attached photo viewed on a computer screen with photo managing software which allowed zooming in to see detail. Method used was to select a typical 0.5" strip and, using the grouping method, estimated the number of geese in the strip to be 125. The mass of geese measured over 8" in length on the screen. Then multiplying 125 by 16 got 2000. Assuming the depth of the geese in the mass was 5, this yields 10,000. Note that this mass of snow Geese was seen across the lake about 2 miles from our location on the viewing platform. Identification was made from the photo after we got home and had access to our computer.
技术信息
- 型号
- Canon EOS 7D Mark II
- 镜头
- EF100-400mm f/4.5-5.6L IS II USM
- ISO
- 1250
- 焦距
- 400 mm
- 闪光
- Flash did not fire, auto
- 光圈
- f/8.0
- 快门速度
- 1/1600 sec
- 尺寸
- 5472 pixels x 3648 pixels
- 原始文件大小
- 2.07 MB