Originally posted by BB_Zone28 I've just noticed the inconsistencies between camera makers on the CT values they assign to their "named" icons that you can choose from to set the camera's WB. One camera uses a "Daylight" preset of 5500k, another assigns it to be 5200k. Then I've noticed that all the other "preset" WB icon selections are shifted by about the same amount as their daylight differences. I understand that CT varies during the time of day and if there are clouds, etc. What I was asking is why would it be so difficult for camera makers to agree on a "standardized" set of CT values to be assigned to each named "preset" icon for the sake of consistency from one camera to another. After all, they choose the same f/#, ISO and shutter speed values (for the most part) from one camera to another.
Because they want a different look, predominantly for skin tones would be my guess..
5200 being "warmer" then 5500K.
I seem to remember something about the temp is more flattering to Asian skintones..
or was it European? Camera makers DON'T even standardize iso, nor f stops either. They pretend to.
Lenses are not even exactly as stated in f stop nor focal length...
The old lens tests used to state the REAL focal length and real f/stop based on measurements of their own.
exposure meters can be the worst and don't even go into the tone curves (which are always different in each camera.
It's all smoke and mirrors anyways....
http://doug.kerr.home.att.net/pumpkin/Color_Temperature.pdf Understanding White Balance Originally posted by BB_Zone28
I agree that beginners don't care as long as the picture looks "pretty". But those who begin to learn to use more than "automatic" settings get confused in the classroom when they see that camera makers differ on what CT values they assign to their WB "preset icon" settings.
I assume they will get just as confused if they had the exact same K temp yet each photo w/ different cameras looked "different" which would probably happen..
Originally posted by BB_Zone28 But they don't get confused about shutter speeds because they are fairly consistent between cameras. SO, WHY can't the WB preset values be consistent also and reduce the confusion? That's all I'm asking. I know that technically you can use whatever values they give you for CT and WB, but you could do the same with any arbitrary shutter speed number also. So, why should camera makers even agree on the numbers for shutter speeds if it doesn't matter? (just like most claim WB preset values don't matter) I think is because it's a nice consistency to have between cameras in order to make using cameras more user friendly and easier to pick up different cameras and AT LEAST HAVE A FEW THINGS THAT ARE COMMON between them.
Thanks for you response to my comments!!!!
As stated earlier daylight is defined between 5000-6500K, none would be incorrect and to pick 1 that all camera makers use would be like getting them to be all the same RAW format...
and my favorite quote which can be universally applied across the board..
I think teaching them to learn their camera is more important then the K scale...
'The exposure meter is calibrated to some clearly defined standards and the user needs to adjust his working method and his subject matter to these values. It does not help to suppose all kinds of assumptions that do not exist.' Erwin Puts