Hello,
I am trying to compare IPC-HDW5241T-ZE and IPC-HDW3241T0ZS-S2 cameras, both of which are 2MP and varifocal. One of the difference between them is that the former offers 'Iris Control' as Auto while the latter does not. Anybody knows what does that mean and if it makes 5241 a much better camera?

I am trying to compare IPC-HDW5241T-ZE and IPC-HDW3241T0ZS-S2 cameras, both of which are 2MP and varifocal. One of the difference between them is that the former offers 'Iris Control' as Auto while the latter does not. Anybody knows what does that mean and if it makes 5241 a much better camera?
