I have a full frame camera (Nikon D-810) and a tele lens (Nikon 70-200mm) and want to use it as my first experience in a fashion runway show.
It is not like I want a full frame to capture a landscape that full frame helps me better — I just want to shoot a little square area that model stands in there. So I was thinking if I switch the camera to its "DX mode" then 200mm becomes almost 300mm with crop ratio. Do you think that is beneficial to me in this specific use case? Or, are there other things that I will miss and I am not aware of?