I usually reference the histogram graph in post production, but the challenge this week was to use it in-production and judge exposure.
In general, dark tones from your photo are weighted to the left on the histogram graph and lighter tones to the right. Although there is no such thing as a perfect histogram graph, it can be a very useful tool. The histogram will show you when your photo is overexposed (entire graph skewed to the right) or underexposed (entire graph skewed to the left), which will affect clarity of detail in the final exposure.
In the photo below, as a fun test, I metered off the green grass and then adjusted the shutter speed to push the histogram graph to the right. The result – I lost detail in the sky and overexposed the photo slightly. A little post-production helped bring the color and details back.
Move on to the next photographer in the 52 Project blog circle, Carol Locey Photograpy serving Greater Cincinnati, OH, and check out her use of the histogram.