"Kelvin scale and D5100's white balance presets..." Fri 07-Feb-14 10:14 AM by sl01
Have you tried to approximate D5100's Factory White balance settings to kelvin values? As you probably know, D5100 doesn't offer Kelvin scale for white balance. But it does offer presets, with fine tuning. Maybe it's possible to relate Kelvin values to (for instance) a certain preset WB, eventually fine tuned? Something like 3200K = Incandescent tuned 2B, 1G. I'm writting this mostly because of my curiosity. I rarely use factory WB presets. I mainly use auto WB for "quick" shots (eventually with WB compensation), or gray card measure for "slow" shots. Regards S.
#1. "RE: Kelvin scale and D5100's white balance presets..." In response to Reply # 0
If you type "Kelvin Light Temperatures" you'll get a fair number of graphs to pick from. The problem is pretty exact for Tungsten 100 watts is 2,800 100 watt Halogen is 3000. Direct sun is 4,800 cloudy is 6,000, Blue sky is 10,000 at the top and candle light is the low end at 1,900 K. Sunrise or Sunset is about 3,000K.
I think the trouble you run into is that how cloudy is a cloudy day? If you shoot raw then it's easy. Use Auto as it gets pretty close then shoot a card and use it to reset the WB in post. In raw it's a free setting after the fact and you can nail it every time. Making jpg's requires the WB to be baked when the processor makes the capture into a jpg file. It's sort of a huge chore to fix the WB when it's wrong in a jpg. You never really get it nailed. A card can help but too many other details happen that you can't undo in a jpg.
You might use a preset for a studio setup that you wanted to repeat regularly. That would be a time saver. Outside I don't see it being useful. It is interesting to understand what the temperatures of types of light are.