Thanks to @Callie recommendation my wife and I have booked an open door helicopter ride over Cape Town. As it´s open door I can only use one lens so would like some recommendations. I was thinking of the 70-200 f2.8 as I am worried a 24-105 f4 will actually be too wide because of the height. IMy wife isn't a photographer but I could try giving her the 24-105 as a back up. Callie showed me some amazing photos taken by a fellow South African photographer so I am hoping for something similar!