sayjames 寫:
I think you meant D7000 has higher ISO sensitivity under low light conditions because higher shutter speed is not suitable under low light condition. However, a large aperture lens (i.e. f1.2) can let you shoot at slightly higher shutter speed to avoid blurry photos due to hand shake.
It would mean I have to use only prime lenses.
My understanding is that there are less noise in D7000 as compare to D90 and so 3200 ISO is more "practical". If I use 3200 ISO, stay with my 2.8 zoom lenses, there are more occasions where I can stay above 1/200 shutter before using a flash. In addition, D7000 can focus faster than the D90 which means I have to hold the camera steady for shorter period of time (before my hand starts to shake).