Sony’s exclusive “G Lens”
Discover the exceptional optical performance of Sony’s “G Lens”. This sophisticated lens features Sony’s unique optical design concept and quality control. Moreover, it’s been optimised to perfectly complement Sony’s advanced image-sensor and image-processing technology, thus expanding your shooting possibilities. Express yourself more fully with the utmost precision of Sony’s “G Lens”.
High-performance optical technology
The 12-element 9-group design of Sony’s advanced “G Lens” features five aspherical lenses and two ED (Extra-low Dispersion) lenses that reduce chromatic aberration caused by light refraction. The result is crisp high-contrast images with less colour bleeding. Furthermore, the advanced optical technology in the “G Lens” perfectly complements Sony’s sophisticated “Exmor R” CMOS Sensor. Not only does it contribute to exceptionally high resolution, but it also supports the ability of the sensor’s back-illuminated technology to realise high-quality images with minimal noise when shooting in low-light conditions. Beautiful background bokeh is made possible by a 6-blade iris diaphragm (aperture iris) that forms a nearly circular shape. Moreover, camera shake blur is significantly reduced — even in footage shot while walking — by new Optical SteadyShot (Active Mode), which features a dramatically increased correction angle.
Aspherical lens element
Light passing through spherical lenses does not precisely converge at a focal point on the focal plane. Sony’s aspherical lens corrects this problem, called spherical aberration, and produces higher contrast images with minimal bleeding.
Extra-low Dispersion lens element
Dispersion is the tendency of glass to split up white light into different wavelengths (colours). The ED glass in the Extra-low Dispersion lens produces lower dispersion, more irregular dispersion, and lower refraction than regular glass, resulting in less chromatic aberration.
Lens with chromatic aberration Lens with less chromatic aberration
Ultra-high refractive index lens element
This lens element features a much higher refractive index than regular glass, contributing to exceptional lens contrast at all focal lengths from wide-angle to telephoto.
Low contrast High contrast
6-blade iris diaphragm
Whether shooting portraits or close-ups, this nearly round iris diaphragm (aperture iris) produces beautiful bokeh that enhances the background.
MTF chart
Lens contrast is a significant strength of Sony’s sophisticated “G Lens”. This outstanding performance is clearly apparent in MTF (Modulation Transfer Function) charts, the industry standard for measuring lens clarity.
Wide angle (release) Telephoto (release)
MTF charts are useful for evaluating lens contrast. Using different LPH (lines per image height), they indicate how precisely subjects are reproduced in the image circle. These charts show distance (mm) from image centre on the horizontal axis and contrast on the vertical axis. Spatial frequency (200, 400, and 800 LPH) is indicated by solid lines for R (radial) and dotted lines for T (tangential).