Bokeh and Background Blur Calculator
Bokeh and Background Blur: a planned Super Calculator tool. Covers focal length. Stub page: the tool, its formula and a worked example are not published yet.
Bokeh and Background Blur Calculator is a planned calculator in the technology section of Super Calculator, covering optics.
What this calculator will compute
Inputs: focal length, f-number, subject distance, background distance and sensor size.
Formula, recorded as scope and not yet verified against a primary source: blur disk diameter = (aperture diameter * (background distance - subject distance))/background distance, scaled to sensor.
Written for portrait shooters comparing lens and distance combinations for subject separation.
Status
This page is a stub. The calculator is not built, no figure on this page has been verified against the authority that sets it, and nothing here should be used to make a decision. The page exists so that the site structure is complete and so that articles can link this concept on first mention.
The stub carries noindex, nofollow and is excluded from the sitemap.