Results for “Bokeh”
9 terms
Bokeh
Optics, Lenses & Filters
The aesthetic character of the out-of-focus areas of an image, as distinct from how much of the image is out of focus.
Cat's-eye Bokeh
Optics, Lenses & Filters
The lens-shaped, off-round rendering of out-of-focus highlights near the frame corners, caused by optical vignetting.
Onion-ring Bokeh
Optics, Lenses & Filters
Concentric rings visible inside out-of-focus highlights, caused by tooling marks on a moulded aspherical element.
Shaped Bokeh
Motion, Video & Creative Techniques
mm (aperture cut-out)
Rendering out-of-focus highlights as a chosen shape by placing a cut-out mask over the lens.
Anamorphic Lens
Optics, Lenses & Filters
squeeze ratio (e.g. 1.33×, 2×)
A lens containing cylindrical elements that squeeze a wide field horizontally onto a standard frame, to be unsqueezed on projection.
Desqueeze = width × squeeze factor
Aspherical Element
Optics, Lenses & Filters
count
A lens element whose surface departs from a simple sphere, correcting aberrations that spherical glass cannot.
Electronic First-curtain Shutter
Cameras, Formats & Systems
seconds
A hybrid shutter that begins the exposure electronically and ends it with a physical curtain.
Longitudinal Chromatic Aberration
Optics, Lenses & Filters
Colour fringing caused by different wavelengths focusing at different distances, producing purple in front of focus and green behind it.
Optical Vignetting
Optics, Lenses & Filters
stops (EV)
Corner darkening caused by the lens barrel physically clipping the light cone reaching off-axis parts of the frame.