Articles


Cutting Through The Haze With Sigmoid

final improved view of country farm without haze
Shooting far-away subjects often results in haze, characterized by a loss of contrast and a loss of detail. Fortunately, sigmoid is well-suited to recover this contrast and pairs well with the haze removal, local contrast, or diffuse or sharpen modules to reverse the haze. Let's dive in and see how this works.

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Understanding Graduated Neutral Density Filters

final version of a sunset using a graduated neutral density filter
A graduated neutral density filter (or GND) goes over your lens and reduces the brightness (typically for about half of the image) without changing the color temperature. This is useful in scenes with high dynamic range where you can't correctly expose all parts of the scene (because it contains more EVs than your camera can capture). Let's learn about physical GNDs as well as creating software GNDs in darktable.

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