Arduino Project with Objective-C

Which arduino? Is an aobjective-c-compiler available for that model? Why should an ancient CMOS camera do that?

I'll be using the Arduiono ATmega2560 with my project and I am not sure if a compiler is available that's why I am asking here. I am thinking of using OV7670 Camera Module since it's cheap and I think I saw someone used one for an object detection project. If you recommend another camera that is cheap and small, please do tell me.