Configuration, MTF, Control

Image of Lens Configuration

Lens Configuration 

G Master series lenses take imaging and expression to previously unattainable levels with a stunning blend of extremely high resolution and softly dissolving background bokeh

[1] Extreme aspherical lens (XA) lens  [2] Aspherical lens  [3]  ED (extra-low dispersion) aspherical lens  [4] Super ED glass  [5] ED (extra-low dispersion)
Image of MTF Chart

MTF Chart 

MTF (Modulation Transfer Function) describes how well a lens can reproduce fine details, measured as the degree of contrast achieved between finely spaced lines.

[1] Contrast (%)  [2] Distance from optical centre of lens (mm)  [3] At 70mm / Max. aperture  [4] At 70mm / F8 aperture  [5] At 200mm / Max. aperture  [6] At 200mm / F8 aperture  [7] Spatial frequency  [8] 10 line pairs / mm   [9] 30 line pairs / mm  [10] R: Radial values  T: Tangential values

Lens Controls

Image of Lens Controls Left side
[1] Focusing ring  [2] Focus hold button  [3] Zooming ring  [4] Aperture ring  [5] Focus-mode switch  [6] Full-time DMF  [7] Focus-range limiter  [8] Shake compensation switch  [9] Shake compensation mode  [10] IRIS LOCK switch [11] Tripod collar ring
Image of Lens Controls Right side
[12] Mounting index  [13] Tripod mount  [14] Aperture click switch