Ring-necked Duck (Aythya collaris) at Salt Plains National Wildlife Refuge in Alfalfa County, Oklahoma, United States on December 22, 2025
Ring-necked Duck (Aythya collaris) at Salt Plains National Wildlife Refuge in Alfalfa County, Oklahoma, United States on December 22, 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 | 1/640 |
| ISO | 800 |
| F Number | 13.0 |
| Camera Temperature | 37 C |
| Measured EV | 13.62 |
| Measured EV 2 | 29.5 |
| Focus Distance Upper | 555.82 m |
| Focus Distance Lower | 81.91 m |
| Artist | John Moyer |
This page is on a slow server. Please be patient while the pictures load.
Copyright John Moyer, All Rights Reserved. https://www.rsok.com/~jrm/