KMHphotovideo - Here is a very useful lens simulator from Nikon. Works same for other brands. If you are planning on getting into photography and buy lenses, start here. Try it for
![Amazon.com : Opteka 500mm f/6.3 (with 2X- 1000mm) Telephoto Mirror Lens for Nikon F-Mount D6, D5, D4, D850, D810, D800, D780, D750, D610, D600, D7500, D7200, D5600, D5500, D5300, D3500 and D3400 Amazon.com : Opteka 500mm f/6.3 (with 2X- 1000mm) Telephoto Mirror Lens for Nikon F-Mount D6, D5, D4, D850, D810, D800, D780, D750, D610, D600, D7500, D7200, D5600, D5500, D5300, D3500 and D3400](https://m.media-amazon.com/images/I/71Buroqu1IL._AC_UF894,1000_QL80_.jpg)
Amazon.com : Opteka 500mm f/6.3 (with 2X- 1000mm) Telephoto Mirror Lens for Nikon F-Mount D6, D5, D4, D850, D810, D800, D780, D750, D610, D600, D7500, D7200, D5600, D5500, D5300, D3500 and D3400
![Amazon.com : Opteka 500mm/1000mm f/8 Manual Telephoto Lens for Nikon F-Mount D6, D5, D4, DF, D850, D810, D780, D750, D700, D610, D500, D7500, D7200, D7100, D5600, D5500, D5300, D5200, D3500, D3400, D3300, Amazon.com : Opteka 500mm/1000mm f/8 Manual Telephoto Lens for Nikon F-Mount D6, D5, D4, DF, D850, D810, D780, D750, D700, D610, D500, D7500, D7200, D7100, D5600, D5500, D5300, D5200, D3500, D3400, D3300,](https://m.media-amazon.com/images/I/71ptFbYwFfL.jpg)