Circular aperture

EN: Circular polarizing filter

Fotografie

A circular polarizing filter is functionally the same as a linear polarizing filter as it only passes light vibrating in a certain direction. However, the light passing through a circular polarizing filter differs from light passing through a linear polarizing filter in that the vibrational locus rotates in a spiral pattern as it propagates. Thus, the effect of the filter does not interfere with the effect of half-mirrors: allowing normal operation of TTL-AE and AF functions. When using a polarizing filter with an EOS camera, be sure to always use a circular polarizing filter. The effectiveness of a circular polarizing filter in eliminating reflected light is the same as that of a linear polarizing filter.
Canon glossary EU

84%

Accuracy

Circular pan

A circular pan is a shot in which the camera rotates 360 degrees around a fixed axis.

Cel Mai folosit cuvant: circular | Domeniu Aplicare : Cinematografie | Caractere: 68 Cuvinte: 17 | Limba: Engleza | Sursa Columbia Film School Glossary

93%

Accuracy

Circular polarizer

A polarizing filter reduces reflections from non-metallic surfaces and darkens the sky. SLR cameras require circular (rather than linear) polarizers to prevent focusing and metering problems associated with the camera s beam-splitter.

Cel Mai folosit cuvant: polarizing | Domeniu Aplicare : Fotografie | Caractere: 197 Cuvinte: 32 | Limba: Engleza | Sursa Canon glossary us

94%

Accuracy

Circular polarizing filter

Converts linear polarized light waves to circular polarized light waves. Required whenever polarizing is desired using autofocus cameras and cameras that have semi-silvered reflex mirrors.

Cel Mai folosit cuvant: polarized | Domeniu Aplicare : Fotografie | Caractere: 161 Cuvinte: 25 | Limba: Engleza | Sursa Nikon Grossary

88%

Accuracy

Circular aperture

Certain Canon lenses feature a new Circular Aperture diaphragm unit, which uses curved aperture blades to provide for a more rounded opening as the lens is stopped down. It s especially effective at rendering out of focus background highlights as natural rounded shapes. In lenses such as the EF 70-200mm f/2.8L IS lens, the lens opening is virtually circular from f/2.8 to f/5.6. These lenses retain all the benefits previously available with Canon s Electromagnetic Diaphragm smooth and consistent stop-down operation (even at up to 10fps with the EOS-1v), near-silent aperture control, and total absence of mechanical levers or switches in the lens mount.

Cel Mai folosit cuvant: lens | Domeniu Aplicare : Fotografie | Caractere: 535 Cuvinte: 104 | Limba: Engleza | Sursa Canon glossary EU