Michael Glantzis Posted March 22 Share Posted March 22 Hi All, I've been finding myself watching a lot of filter test videos lately, and was wondering if anyone had a more precise method to classify the differences between the types of diffusion filters. Something like Tiffen's "Triangle of Diffusion" interests me, however I find it troublesome that this model presents halation, contrast reduction, and resolution reduction as mutually exclusive. Each of these qualities is a scale in and of itself, and adding to one does not necessarily take away from another. Additionally, I've noticed some qualities of diffusion filters that are not represented on the triangle of diffusion, or are sub-categories of those that are. These qualities include: Darkening of the Highlights Brightening of the Shadows Changes in Saturation Color of Halation Color Rendering Warming/Cooling Atmospheric Effects And I'm sure there are more distinguishing qualities that I'm not including. I was wondering if any information is available that describes the behavior of filters in a more comprehensive way. Of course, the artistic impression of a filter is ultimately going to be subjective, but I do think it is extremely helpful when developing an artistic intuition to understand precisely how a piece of optics affects an image. Ultimately, when I'm telling my colleague why I prefer Glimmerglass over Black Pro Mist, I want to talk less about Glimmerglass's "dream like quality", and be able to point to specific, concrete, variables that are changing within the image. While I've been spending some time evaluating these filters myself, I'm fairly new to the field, and would love to hear the approaches of people who have been doing it longer than me. Excited to hear what people think. Quote Link to comment Share on other sites More sharing options...
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