If I got this teleconverter for my 55-300mm. I spend many hours in a blind and would use it to try to get pics like Grandpaws. ;)
Vivitar 2x Teleconverter (7 Elements) for Nikon 55-300mm f/4.5-5.6G ED VR AF-S NIKKOR Zoom Lens
Is it possible to determine what focal length you are using while you take a photo? If I wanted to take a picture at a certain focal length, how would I do it? Say I want to shoot a photo at 17mm with a 12 to 24mm. How would I do it?