It requires fewer shots to span the dynamic range, and therefore reduces the risk of ghosting in non-static scenes. Very high contrast scenes, such as a interior with a bright window in the frame, will typically require 5 frames, at 2 EV steps, and sometimes more.Ī 2 EV spacing has several advantages compared to an 1 EV spacing.
We recommend shooting in 2 EV steps whenever possible.Ī typical outdoor scenes will usually require 3 shots at 2 EV spacing (i.e. If you shoot your exposures in 1 EV steps, you will need more exposures to capture the entire dynamic range of a scene than if you shoot them in 2 EV steps. The total number of exposures also depends on the Exposure Value (EV) spacing between each exposure. Your brightest exposure must capture the darkest areas of the scene, and the darkest exposure must capture the brightest sections of the scene. The number of exposures to shoot depends on the dynamic range in frame, the exposure difference between the darkest and brightest areas of the scene. However, for the interior of a room with a bright view out the window, you will need at least five images taken with an exposure increment of +/- 2, or nine images taken with an exposure increment of +/- 1. For most outdoor scenes, three exposures taken at +/- 2 exposure increments is sufficient, provided the scene does not include the sun. The number of exposures needed depends on the dynamic range of the scene, in addition to the exposure increment. This is the case when the histogram of your darkest image is completely empty on the right half. Another option is to re-shoot the exposure sequence with the normal exposure set one or more EVs higher if your most underexposed image in the exposure sequence was too dark. If this is not the case, add one or more photos taken with longer exposure times. In your most overexposed photo, the left part of the histogram should be empty until 1/3rd of the histogram’s width. To check this, use your camera’s histogram preview in playback mode. In the lightest photo of the sequence, the darkest shadow areas of the scene should be shifted at least The latter is especially important to prevent noise in the processed HDR image. To get good results with HDR processing, your bracketed sequence must include photos that correctly expose highlights as well as photos that correctly expose shadows. It is recommended to use a method that ensures the least possible shake for each single shot, such as mirror lock-up functionality, if available. The continuous shooting mode may not always be the best strategy, because camera shake may build up. You need to take at least five exposures in two-EV steps (or nine exposures in one-EV steps) to capture this type of scene, but you may need more. High dynamic range scene: A typical example is the interior of a room with a view outside the window on a sunny day. –2, 0 +2 EV), or five exposures taken in one-EV steps, are usually sufficient for this type of scene. Three exposures taken in two-EV steps (i.e. Medium dynamic range scene: Most landscapes and other types of outdoor scenes fall into this category. High contrast scenes can be grouped into roughly two types depending on their dynamic range: We recommend shooting in two-EV steps whenever possible. If you take them in two-EV steps (e.g., -2, 0, +2 EV). If you take them in one-EV steps (e.g., -1, 0, +1 EV), you will need more photos than It also depends on the Exposure Value (EV) spacing separating the photos. The number of photos you need depends on the scene. The exposures taken must properly cover the dynamic range of the scene, especially the shadows. To photograph a high contrast scene, you need to take several exposures in order to capture information in both the highlights and the shadows of the scene. The shooting phase is essential for getting good results with Photomatix Pro.
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