optically plausible
optical plausibility
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What do these terms refer to?
“Optically plausible” photographs are those that meet rinairs for focus renderings that could have been produced using conventional optics in a single-exposure, undoctored photograph.
“Optical plausibility” comes into play when two or more exposures are combined that had different distances of the scene in focus.
An example of an image that would not meet rinairs for optical plausibility would be a photograph in which when looking down a line of objects (for example a row of fenceposts, or a side view of an unstarted chess game), the nearest and furthest objects are in focus but those in the middle distance are not in focus.
See also the guide to focus and bokeh.
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Is this of concern to TTG photographers?
Not yet.
“Optical plausibility” is for now primarily a theoretical concern more than a practical one, because every mass-marketed device and camera that automatically and instantly combines exposures is designed to produce “optically plausible” photographs.
But optical plausibility is built into P3 because in the future, as focusing and recording options speed up on standalone cameras — and/or if photographers are able to separate and work with the individual exposures captured in a single second by smartphone cameras — optical plausibility could become more of an issue.