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Lens photography | Understanding camera lenses | Adobe
- https://www.adobe.com/creativecloud/photography/discover/lens-photography.html
- A quick guide to typical focal lengths and their uses. 12mm–35mm. Wide-angle lenses — great for landscape photography, architecture photography, and photos of the sky or the Milky Way. 35mm–70mm. Standard or medium-range lenses — great for portraiture, street photography, and travel photography. 70mm–135mm.
US4303313A - Photographic lens system - Google Patents
- https://patents.google.com/patent/US4303313A/en
- The present invention relates to a photographic lens system for use in a compact camera using 35 mm film, and more particularly to a lens system having an angle of field of view wider than 60° and F-number of 3.5 and having a small number of lens elements.
US4457593A - Photographic lens system - Google Patents
- https://patents.google.com/patent/US4457593A/en
- The photographic lens system disclosed includes a front lens arrangement of positive refractive power with a plurality of components having lens surfaces followed by a diaphragm. A light control includes a number of light absorbing regions on the surface of a component other than the surface adjacent the diaphragm. According to an embodiment, the light control includes a …
US4212517A - Photographic lens system - Google Patents
- https://patents.google.com/patent/US4212517A/en
- A photographic lens system of modified Gauss type comprising a first, second, third fourth and fifth lens components in which the first and second lens components are positive meniscus lenses arranged convex toward the object side, the third lens component is a negative meniscus lens arranged convex toward the object side, the fourth lens component is a negative …
US2084309A - Photographic lens system - Google Patents
- https://patents.google.com/patent/US2084309A/en
- The present invention relates specifically to a photographic lens system comprising four units separated from each other by air spaces. The first unit again is a collective unit, the second a cemented concavo-convex meniscus unit with the convex side towards the object, the third unit is a collective unit with a cementing surface convex towards the object, and the fourth unit is a …
US2033596A - Photographic lens system - Google Patents
- https://patents.google.com/patent/US2033596A/en
- Photographic lens system Download PDF Info ... Prior art keywords lens objective lenses concave combination Prior art date 1935-03-08 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Camera lens - Wikipedia
- https://en.wikipedia.org/wiki/Camera_lens
- A camera lens (also known as photographic lens or photographic objective) ... For a given photographic system the focal length determines the angle of view, short focal lengths giving a wider field of view than longer focal length lenses. A wider aperture, identified by a smaller f-number, allows using a faster shutter speed for the same ...
Photographic lens system - Olympus Optical Co., Ltd.
- https://www.freepatentsonline.com/5862000.html
- A photographic lens system which is composed, in order from the object side, of a first lens element having a positive refractive power, a second lens element having a negative refractive power, a third lens element having a positive refractive power, and a fourth lens element which has an aspherical surface on the image side and a negative refractive powers.
olloclip® - The Original Mobile Phone Lens System - Patented …
- https://olloclip.com/
- The original patented attachable lens system for mobile phones, smartphones, cell phones, tablets, laptops and other devices: Telephoto, Wide-Angle, FishEye, Macro and more. Attach to front and rear cameras at the same time. Make Your Phone's Camera Do More™ with the Best Smartphone Lens System!
Catadioptric system - Wikipedia
- https://en.wikipedia.org/wiki/Catadioptric_system
- A catadioptric optical system is one where refraction and reflection are combined in an optical system, usually via lenses and curved mirrors ().Catadioptric combinations are used in focusing systems such as searchlights, headlamps, early lighthouse focusing systems, optical telescopes, microscopes, and telephoto lenses.Other optical systems that use lenses and mirrors are also …
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