Neg fill is the enhancement of contrast in an image by introducing a black solid such as a flag to block ambient light.
Lighting Techniques Archives - Neil Oseman
How to tell if the picture is taken using a 35mm film by looking at it? Are there any ways - Quora
Lighting Techniques Archives - Neil Oseman
How to mould natural light to get the most beautiful shots
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lighting Archives - Neil Oseman
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tips Archives - Neil Oseman
Bridging the gap between emotion and joint action - ScienceDirect
What is Negative Fill and How Do You Use It? - Neil Oseman