Shot #1861, RAWĪnd now the other one that looked overexposed in JPEG: Figure 4. Now let’s look at the RAW for the same images, setting white balance from a white pebble and using propagation mode so that the next file will be opened with the same white balance we have set for this one.Ĭonsider the RAW histogram and overexposure statistics for the shot that seems to be correctly exposed if looking at JPEG preview: Figure 3. Looking at the JPEG histograms, out of the two shots, the shot #1861 (figure 1), is exactly what we need in terms of exposure (histogram just touching the right wall), while the second shot, #1865 (figure 2), is heavily overexposed on the pebbles and on clouds, lacking plenty of details in those areas and the histogram for the embedded JPEG of the shot #1865 “climbs the right wall”, confirming what seems to be overexposure. Let’s look at the two shots, one taken at 1/1600 sec, and the other, taken +1.33 EV, at 1/640 sec: Figure 1. Let’s shoot in RAW, bracket the exposure, and try to choose the best shot picking the image the “old” way, which is based on the built-in JPEG, using the JPEG histogram, and the brightness on the screen. We will see later, however, that the real range of the shot we are examining is pretty much only 8 EV, if the exposure is technically correct. These types of scenes typically have a very wide dynamic range. What do you think is the possibility, when you are choosing and sorting images based on the JPEG previews, that you are going to discard the better-quality image, and keep the lesser-quality one? Let’s take a look at a typical “training” shot for a holiday – noon of a sunny day, blue Ionian sea, bright white limestone pebbles, bushes with dark-green, high-detail leaves (which lose all detail if the shot is underexposed), deep shadows under the bushes.
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