How can I check what the zoom level of this camera is equivalent to focal length in mm? I'm trying to use this camera to help me establish what focal length I need at different areas so I can buy fixed lens cameras.
Set the Zoom Speed to '1'. Hover your cursor over the slider and a value will pop up. This is the current setting.
Move the slider to the far left to get the minimum number, and to the far right to get the maximum number.
Go to the calculator that you linked to and use these numbers.
Realize that for the 5442 cams, the fixed lenes are on a different mount than the varifocal cams. Which means that the calculated value will not be the exact value of the fixed lens version. I did a test of this in the following thread:
I was testing out a new Dahua T5442T-ZE 2.7-12mm Varifocal camera (from @EMPIRETECANDY ) and was going to compare it's performance to the Dahua HDW5231R-ZE and the HDW5431R-ZE cameras, which are 2.7-13.5mm varifocals, along with the T5442TM-AS fixed lens at 6mm camera. The HDW5431R-ZE has been...
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What I have found is that the fixed lens versions have slightly better specs, but I do not think that this translates to a better image that one can see in real life.