Ruddy Duck (Oxyura jamaicensis) at Salt Plains National Wildlife Refuge in Alfalfa County, Oklahoma, United States on October 21, 2025
Ruddy Duck (Oxyura jamaicensis) at Salt Plains National Wildlife Refuge in Alfalfa County, Oklahoma, United States on October 21, 2025
| Camera Model Name | Canon EOS R5 |
| Lens Model | EF100-400mm f/4.5-5.6L IS II USM +2x III |
| Focal Length | 800 mm |
| Exposure Time | 1/400 |
| ISO | 250 |
| F Number | 11.0 |
| Camera Temperature | 29 C |
| Measured EV | 14.38 |
| Measured EV 2 | 32.5 |
| Focus Distance Upper | 83.78 m |
| Focus Distance Lower | 64.14 m |
| Artist | John Moyer |
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