Hi, I am relatively new to this, as I have always used auto white balance, and am finding out that using manual white balance is better but I have a question: How do I find the color temperature of the area I will be recording without bringing my camera all the way over there and using my white card? Is it just as simple as all incandescent lights are 2700K? Or do photographers have a device (cheaper the better) that they can hold up where their subject will be? I will be located in a balcony and I don't really want to disturb the place too much and moving my camera.
Could my phone's "pro" photo app feature to find color temperature be good enough or is it just as simple as 2700 Kelvin is for all incandescent lights? Or do those Lux sensors have a Kelvin detector?