The Sony sal-35f14g wide angle 35mm f/1. 4G autofocus lens is the ultimate standard DSLR lens-with Ultra-bright F1. 4 performance. With its equivalent 52. 5mm focal length, the superb sal-35f14g lens closely reproduces the natural angle of vision of the human eye making it ideal for both general photo-imaging and fine-art photography applications where zoom capability might DISTRACT you from concentrating on aesthetic properties of your subject. Features: Ultra-bright F1. 4 aperture - in conjunction with the super steady shot image stabilization system of the Sony Α (Alpha) DSLR cameras, This lens captures bright, steady images even working with hand-held camera in very low light. Glass-molded aspherical lens - Improves optical stability and precision in creating sharper, more visually accurate images with minimal distortion even at fully open aperture. Focus hold button - for full creative control, a focus hold button located on the lens can lock auto-focusing. Auto clutch - in auto-focus mode, the manual focus ring does not rotate-which improves handling ease.
With its superb optics and large F1.4 maximum aperture, the SAL135F14G is one of the finest fast 35mm lenses in its class. I n addition to no-compromise G Lens construction and quality throughout, it features an optical design that includes an aspherical lens element that contributes to consistently superior, low-distortion image quality right up to the F1.4 maximum aperture.
When changing your aperture to defocus the background, the light sources appear blurred. This ‘bokeh’ effect of the blurred background can be enhanced with circular aperture blades used in this lens. Conventional aperture blades have flat sides creating unappealing polygonal shaped defocussed points of light. α lenses overcome this problem through a unique design that keeps the aperture almost perfectly circular from its wide-open setting to when it is closed by 2 stops. Smoother, more natural defocusing can be obtained as a result.
Aspherical lens design dramatically reduces spherical aberration while also reducing lens size and weight. Spherical aberration is a slight misalignment of the light rays projected on the image plane. This is caused by differences in refraction at different points on conventional spherical lenses which degrade image quality in large-aperture lenses. Specially shaped “aspherical” elements near the diaphragm restore alignment of light rays at the image plane, maintaining high sharpness and contrast even at maximum aperture and can also be used at other points in the optical path to reduce distortion. Well-designed aspherical elements can reduce the total number of elements required in the lens, thus reducing overall size and weight. Advanced Aspherical (AA) elements are an evolved variant, featuring an extremely high thickness ratio between the center and periphery. AA elements are exceedingly difficult to produce, relying on the most advanced molding technology to consistently and precisely achieve the required shape and surface accuracy, resulting in significantly improved image accuracy and quality.
Once you’ve adjusted focus to where you want it, pressing this button on the lens barrel will keep the lens locked to that focusing distance. The preview function can also be assigned to this button through the camera’s custom settings.
The distance encoder plays an integral part in ADI flash metering, which delivers high precision flash metering that is unaffected by the reflectance of subjects or backgrounds. The distance encoder is a lens component that directly detects the position of the focusing mechanism, and sends a signal to the CPU in order to measure distance to the subject. During flash photography, this data is very useful in calculating how much flash output is appropriate to the scene.
Only the rear groups of the optical system move to focus the lens, which allows for speedy AF operation and a shorter minimum focusing distance. Since the front of the lens does not rotate, operability is improved when shooting with a polarizing filter attached.