Well unfortunately, I am not going to Hong Kong. However, my girlfriend is and she wants to bring either the 5DII or the 7D. She feels very comfortable with the 7D because of it's AF points, however, the 5D is better at noise handling and it has a FF sensor so my primes become wider for her.
Between the two of us, we share the following lenses:
She doesnt want to bring the 24-70L because she doesn't like the f2.8 aperture and she finds it to be very heavy (after all, it is named the brick).
So hopefully, you guys can suggest two primes that she can bring to effectively capture her trip. All we know is that she will be going to Disneyland and will be traveling with her cousin who lives there.
I was thinking of encouraging her to bring the 24L and the 50 1.4 on a 7D. I'm just not sure if 38mm (35mm equiv) will be wide enough for her to capture Hong Kong.