I apologise in advance for these dumb questions. I've currently got a D300 and a Tokina 12-24 and Tamron 17-50. But I'm not 100% happy with them, that includes the D300. The 14-24 and 24-70 2.8 FX lenses, can be used on the D300. But what zoom range would you get when fitted to a DX camera ? Is a 14-24 range the same on a full frame camera as a DX camera i.e is the field of view the same or do you need to take into account the 1.5 crop factor ? Basically, if I took a photo at 20mm with the D300 & 14-24 FX lens, then put on the Tokina @ 20mm, would the field of view be the same ?