Color Temperature

I spend a lot of time looking out our kitchen window at dawn, watching the way the light changes (usually sipping a cup of Dragonwell green tea).  It’s fascinating to see how one morning changes from the next.  And the best time of the year to see clear, colorful sunrises (and sunsets) is now – December and January.  The air is the clearest and freshest.

One of the things I really enjoy watching is how the color temperature changes from the time the outside just begins to lighten up until the sun is well overhead.  I’ve discussed this in other posts (Dawn).  What I want to do here is very briefly illustrate the point.

So this evening I grabbed this quick shot with my trusty Canon G11.

IMG_1030 This is looking out our back window after the sun has gone down (yes, I photograph twilight too).

You might say it doesn’t look real.  How could the outside be so blue?  But in fact, this is one of those cases where the camera doesn’t lie.  Given that the sun is way below the horizon and the source of illumination outside is the sky, then the light outside is in fact blue.  Inside we have incandescent lights, the color of which is definitely yellow.  The contrast of standing on the inside with warm light and looking out into cool light is both apparent and striking.

Suffice it to say that color temperature is a quantitative measure of the blueness or redness of the ambient light.  Color temperature is measured in degrees Kelvin and the scale goes opposite of what you would expect.  Low temperatures are red and high temperatures are blue (even though we think of reds as warm and blues as cool).  So the color temperature inside the room may be about 4500 degrees and outside it may be 9000 degrees or more.  We’ll get into this in more detail some other time.

As photographers we can use this understanding of color temperature to our advantage.  As digital photographers we always have the option of setting our white balance to compensate for the color temperature – daylight, cloudy, shade, tungsten, etc.

But we can also use this creatively.  We routinely use the warm light of the ‘golden hour,’ the hour after sunrise and before sunset, to give our images a warm glow.  But we can also use the cool light of dusk.

We don’t usually see the colors because our minds are stronger than our eyes and tell us what the color really should be.  But we can train ourselves to pay attention to what our eyes are telling us and actually see the color.

Give it a try.  With a little practice you’ll be able to see the blue in the shadows.  And you just might decide you like it and leave it in your images instead of correcting it out  because it doesn’t look real.

To see more of my photographs click here.

Join me on an upcoming workshop.

Become a fan on Facebook and follow along.

(1203)

Color Saturation in Lightroom

On three techniques for saturating color in Lightroom.

Last night we had a beautiful sunset.  The sky was baby blue, the clouds were pink and the horizon was golden.  I couldn’t resist.  So I grabbed my Canon PowerShot G11 and walked over to the neighbor’s front yard where the view is just a bit better.  I composed what I thought was an interesting image and snapped a few.

This morning I uploaded them and got to wondering about color saturation in Adobe Photoshop Lightroom.  I have a technique I’ve used for years to enhance colors but there are a couple of other techniques I thought I’d like to understand better.  The three Lightroom controls are:

  • Saturation
  • Vibrance
  • HSL (the control I use the most)

So, for starters, here’s the original unadjusted image.

sunset_original As you can see, the colors are really quite nice.  But my recollection of the sunset was that they were a little more saturated, more intense.

Continue reading “Color Saturation in Lightroom”

(4285)

Ten Tips for Exciting Nighttime Photography

There is a growing interest in a new kind of nighttime photography.  Photographers have been taking photographs of the nighttime sky ever since film was invented.  These photographs were generally long exposures that show beautiful star trails.  But now they are taking clear, sharp images of the stars and planets literally stopped in their tracks.

Astronomers have always been taking photographs of the nighttime sky and their goal has always been to get sharp images of the stars.  To do that they rigged their powerful telescopes with very precise motor drives that slowly turned the telescopes at the same rate as the stars move overhead, effectively holding the stars motionless in the field of view.

But with the advent of digital cameras the notion of photographing the night sky as part of a broader landscape has become increasingly popular.  And it’s not just star trail images that photographers are capturing.  They are capturing spectacular images of the planets, constellations and even the Milky Way over well known features on earth.  Wally Pacholka is one of the best of this new breed of photographers and his work is an outstanding example of this genre of fine art photography.  Check out Wally’s incredible Top Ten Night Sky Images to see what I’m talking about.

Continue reading “Ten Tips for Exciting Nighttime Photography”

(9986)