(57)< Abstract > This invention offers the lens which possesses the smooth transition region between the territory where it possesses the optical refracting power or focal length 2 or more and the territory of the refracting power where these differ.ロフマンジェフリーエイチ...
DXOMARK's comprehensive camera lens test result database allows you to browse and select lenses for comparison based on their characteristics, brand, price, lens type, lens size, focal range and aperture. You can also select a camera to see the results for all the lenses tested on it. ...
When we speak of the image quality of a lens, we’re really talking about the lens’s capacity to draw in light, bend and focus its beams, and then project those beams onto the sensor without any loss of accuracy. Loss of accuracy means light rays that do not realign properly when the...
Single vision lenses have one optical prescription to correct vision at one distance. If you’re long-sighted and struggle to see up close, you will have a plus (+) prescription. If you’re short-sighted and need help seeing in the distance, your prescription will contain a minus (-). ...
The main reason to use anamorphic with digital is for its other effects. Lens flare and out of focus backgrounds ("bokeh") will appear elongated as opposed to circular (unless the lens has a specially-designed ovular iris). Flare may also appear as bluish horizontal or vertical streaks which...
To make sure your contacts are good to wear, clean them regularly. Be sure to use fresh solution with every cleaning and to rinse the lenses and its case. Your optometrist will provide you with proper cleaning instructions based on the type of lens you’ve chosen. Don’t take any shortcu...
NiSi 9mm f2.8 Sunstar: This manual-focus lens boasts an impressive 113° field of view, making it ideal for capturing expansive landscapes and architecture. Its f2.8 aperture enables low-light shooting and creative control over depth of field. Full-Frame Cinema Lenses: NiSi ATHENA Prime: These...
the lens from going further back. If the lens cannot be repositioned on the cornea, it is under the eyelid and can be easily slid or moved to its correct position on the cornea (sometimes requiring the help of the fitter). It will not harm if it is under the eyelid for several ...
This Pentax 50mm f/1.4 SDM AW lens aspires to be amongst the best of the best, and indeed it achieves that at a price which is still high, but which is highly competitive within its own bracket. Add effective AF and all-weather construction where some much more expensive lenses are man...
. The K-3 has been adopted by many film schools, including the University of Southern California's School of Cinema and Television. It has a semi-automatic diaphragm setting. Its low price, rugged construction and sophisticated optics have made it very popular with both beginning filmmakers and...