Configuration, MTF, Control

Illustration of lens configuration

Lens Configuration

Impeccable Sony G Lens design emphasises a graceful balance between high resolution and gorgeous background bokeh that can enhance the artist’s vision.
[1] Advanced aspherical lens (AA lens)  [2] ED (extra-low dispersion) glass
Modulation Transfer Function of SEL20F18G

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] Max. aperture  [4] F8 aperture  [5] Spatial frequency
[6] 10 lines pairs/mm  [7] 30 line pairs/mm
[8] Radial values  [9] Tangential values
Lens Controls
1. Focusing ring / 2. Focus hold button / 3. Aperture ring / 4. Focus mode switch / 5. Aperture Index / 6. Aperture click switch

Lens Controls