Is there any change in the data captured when shooting RAW by changing the White Balance.? I understood it was of no consequence what the WB setting was in RAW because you can change it in PP. Now I read that the EXIF metadata tag may alter with different WB settings. Does it matter? Tom
I ask because I shoot NEF & on D7000/P7100 I only change from Auto WB for flash. I use CNX2 & mainly Aperture so I noticed that the photo I am looking at in the software differs dependent on the WB setting. I can change the WB setting in Aperture etc but if the NEF file has no WB other than a tag is the software changing it for display? If RAW has no effect why is it visibly different in software? Is it being changed to jpeg Tom
You are confusing the data in the file with what you see on the screen. The NEF data in the file needs to be interpreted by a viewer/editor then painted on the screen. When you change the settings in the editor, you are just changing the interpretation of the raw data.
JPG images, on the other hand, have all the image settings baked into the picture so that there is no interpreting done. What you see is what there is.
---------+---------+---------+---------+ Joseph K Seattle, WA, USA
Fri 12-Oct-12 12:06 AM | edited Fri 12-Oct-12 12:09 AM by dm1dave
“...is the software changing it for display?” “If RAW has no effect why is it visibly different in software? Is it being changed to jpeg”
Yes, the software (the RAW converter) takes the sensor data and compiles it to render the image you see on screen. The software uses the tags (Nikon software reads all of the tags including all picture control settings, 3rd party software can only read WB) and any presets that you have set up in the software to render the image.
The rendered image that you are working with is more like a TIFF file than a JEPG. The difference though between working a NEF and a TIFF is that each time you make a change the software re-renders the file from the RAW data while applying your changes.