Originally posted by demoleman Right. So basically it is the sum of 2800K and 5000K on top of it which cause the bluish? But indoor you often need a flash, right? So better use the Flash WB. But when do you use the Tungsten. You hardly use it outdoor? And as I wrote. I can use the Tungsten without any flash indoor when I use a 0.5 sec shutter
You're making this far more complicated than it needs to be, making wrong assumptions along the way. Go back to the first sentence in my previous post, "Most flash units are powerful enough to overpower standard room lights, resulting in images primarily dominated by the flash output instead of the room lights." If the flash overpowers the room lighting, the room lighting doesn't matter anymore. In other words, in most cases, don't worry about the secondary light source. The camera's WB is set for the strongest, dominate, light source when the image is recorded. So, lets simplify all this down:
- A room with normal lighting & no flash = Tungsten White Balance.
- A room with normal lighting & flash = Flash White Balance.
- A room with normal lighting but stronger window sunlight = Daylight White Balance.
- A room with fluorescent lighting & no flash = Fluorescent White Balance.
- A room with fluorescent lighting & flash = Flash White Balance.
- A room with fluorescent lighting but stronger window sunlight = Daylight White Balance.
- and so on through the other WB options.
Remember, in each case, we're talking about the dominate (strongest) light at the moment of exposure. A room may be lit with tungsten light, but that doesn't matter if a flash is used for the exposure. Again , since the flash will usually dominate over the tungsten lighting, the flash WB is used instead. Anyway, these settings will provide reasonably acceptable images in most cases.
Of course, there are always exceptions. For example, if you're attempting to balance the existing (ambient) light source with flash, other tactics are employed. However, just stick with the basics for now. As you learn more, those tactics will become more obvious.
stewart