If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Kelvin Scale - Digital Photography
On 2008-08-02, Mxsmanic wrote:
writes: --Does anyone know how these settings relate to Kelvin numbers? Color temperature is related to blackbody radiation. Any object that absorbs all radiation falling upon it (a chunk of coal is one good approximation) will emit radiation at all wavelengths in specific proportions based solely upon its temperature, if that temperature is above zero kelvins. Water freezes at about 273 kelvins. I'm with you up to here, but you start to equate physical temperature with colour temperature from here on which, while reasonable for the examples given, would confuse someone confronted with an overcast sky whose physical temperature varies from its colour temperature by 6-7000K. Candles burn at about 1600 kelvins. Photoflood bulbs have filaments heated to about 3200 kelvins. The surface of the sun has a temperature of around 9000 kelvins, but after sunlight is filtered through our atmosphere, it is closer to a color temperature of 5600-6500 kelvins. A kelvin is roughly equivalent to one degree Celsius. The interval 1K is exactly the same as 1 degree Celsius. -- savvo orig. invib. man |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Kelvin Scale - Digital Photography | John McWilliams | Digital Photography | 0 | August 2nd 08 06:04 PM |
Kelvin Scale - Digital Photography | Allen[_3_] | Digital Photography | 0 | August 2nd 08 04:13 PM |
WB - from Kelvin to RGB | Radek D | Digital Photography | 5 | July 28th 06 12:25 AM |
The Definitive Chord & Scale Bible - Literally EVERY chord and scale! | Kind of Blue2 | Digital Photography | 1 | February 8th 05 10:14 PM |
The Definitive Chord & Scale Bible - Literally EVERY chord and scale! | Kind of Blue234 | Digital Photo Equipment For Sale | 0 | February 8th 05 05:43 PM |