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This filter is determined, for different lens apertures, as the inverse of the approximated vignetting function:
The N9 has an 8-megapixel Carl Zeiss autofocus sensor, wide-angle lens, HD-quality video capture and a large lens aperture to enable good camera performance even in low lighting conditions.
The 8-megapixel Carl Zeiss autofocus sensor, wide-angle lens, HD-quality video capture and large lens aperture enable great camera performance even in lowlighting conditions.
With this possibility photographer, in fact, significantly expands the choice of exposure selection and, assuming the same lighting and same exposure time, with increasing ISO speed photographer can shoot with a smaller lens aperture, or with reducing the ISO speed with larger lens aperture (Schnelle-Schneyder, 2003).
For the portrait the main criterion of selecting the lens aperture is sharpness of both eyes, so a maximum aperture lens that provides acuity of both eyes is selected (Mikota, 2000).
25" lens aperture has been introduced by electronics company Samsung Electronics, aimed at the ultra slim camera phone market.
In addition to the remarkable elimination of most depth of field restrictions, a substantial improvement in overall sharpness is also achieved because the lens aperture can be set for maximum sharpness without having to consider the poor associated depth of focus.
Many camera models have no manual override for exposure; you can't control the camera's shutter speed and lens aperture (opening), so you have to rely on its autoexposure feature.
Model One Mkll offers higher contrast than its predecessor, as well as a new lens aperture, longer lamp life and Ethernet connection.
The LDM-9810 modularly designed viewer module is combined with the PD-16VI011 plug-in photometric detector and any proprietary optometer, forming an luminance measurement system that features a viewable and sizeable target spot A wide achromatically corrected 50-mm lens aperture objective and focusing feature satisfies the tightest requirements for the suppression of stray light and image formation.
Even though we're continuing to advance with digital, we're still innovating on the film side," says a Fuji spokesman, who points to the introduction earlier this year of the QuickSnap Smart Flash, a technologically advanced one-time-use camera that allows users to adjust lens aperture and shutter speed for more exposure control.
In order for the photograph to be exposed correctly, you need to select the correct lens aperture for the duration of the shot.