I am looking at a B4 lens adapter for the C300
Question, I have to have this doubler on the lens engaged to cover the C300’s sensor, BUT, will I lose any wideness in my lens? How much? I have a really nice Fujinon 17×4.6 ENG lens right now. Would this be practical? I am not 100% clear on how this works. Forgive my ignorance in this matter.