Posts: michaelgem | Ugly Hedgehog

BboH wrote:

Neither my D3 nor my D300 will display the Kelvin it measures.

Is this not a colossal oversight considering it is sitting in the camera's software and it would be of tremendous value when matching the color temperatures of various sources of light in a composition.

There has got to be a solution to this even if it requires taking a white balance picture into PS or LR3 and figuring it out.

Can't believe Nikon has overlooked this valuable feature, which so easily could be supplied.

Michael

Mar 17, 2012 23:24:05 #

snowbear wrote:

Is it possible he's referring to setting a custom WB? You photo a plain white (or grey) field and the camera bases WB on that reference photo. That's how it works on the D40, but there is no value given, unless it's in the EXIF somewhere.

There are meters that measure color temperature, but I understand they are expensive. CFL bulbs have the temperature printed on them (I have one that is 3000K)

Considering that meters which measure color temperature are expensive, and the D7000 is an extremely accurate measurer of color temperature, why in heaven's name do they not make it available as a read out?

Michael

Mar 17, 2012 23:10:06 #

Does anyone know a way to ask this question of someone at Nikon, or is that like trying to get Microsoft to answer anything?
Michael

Mar 17, 2012 22:53:08 #

MT Shooter wrote:

You can set the Custom WB on the D7000 to any Kelvin temp you want to set it at. But you would still need another way to measure that color temp, the D7000 will not do it, I have tried everything I can think of with mine and it does not seem to have that capability anywhere.
Any idea what the "PRE" refers to?

PRE (Preset manual) - Use to measure WB for the actual ambient light.

As you know manual white balance (PRE) measures the ambient light from a white or gray card in order to determine the incident lights color temperature to adjust the camera for it.

"It is very accurate since it's an actual through-the-lens measurement of the source light's Kelvin temperature."

The frustrating thing is that although it measures the source light's color temperature it apparently does not make that Kelvin temperature available. So near yet so far. Extremely annoying.

I got to believe there is a way to wring it out of the D7000. :-)

Michael

Mar 17, 2012 19:36:48 #

In reading Darrell Young's excellent book "Mastering the Nikon D7000" he states on p377 under "Measuring Actual Ambient Light by Using PRE": "This method allows you to measure ambient light values. ...It's very accurate since it's an actual measurement of the source light's Kelvin temperature."

That is what I want to do, measure the Kelvin temp of various sources to check for compatibility when mixing them.

He then shows how the camera measures and stores the white balance values, but nowhere is there indicated a place to get a readout of the Kelvin temperature.

Can someone tell me how to obtain the measured white balance value in Kelvin temperature, ie. 5200K is neutral daylight, 6500K northern daylight, 3100K cool white fluorescent, etc.?

Michael

Nov 10, 2011 11:42:55 #

Question for Nikon owners

To amplify on: IF you have a crop or DX camera, the 70-200 will reach 510 feet. 200X1.5X1.7= 510 feet. So it will be the lighter combo for you. ephraim Imperio

Just in case you had not factored this in, the smaller than 35mm DX sensor on your D7000 turns the 70-200 zoom into a 105-300 lens.

michaelgem