What information does the lens model name provide?

1. Focal length: When this value is a range, the lens is a zoom lens. When this value is a single number, the lens is a single focus lens.
2. F-value which indicates how fast the lens is based on aperture settings.
   • F-value indicated by the name of a lens is the F-value when the lens is wide open (the minimum F-value).
   • The smaller the value, the faster the lens is.
3. The prefix of an E-mount lens is SEL (e.g. SEL2870).

The typical codes used at the beginning of an E-mount lens’ name:

• E denotes a lens for a camera with an APS-C size image sensor. When the lens has been mounted on a camera which is equipped with a 35 mm full-frame image sensor, the angle of view is cropped to APS-C size.
• PZ denotes power zoom capability.
• FE is a code for a lens compatible with a camera taht has a 35 mm full-frame image sensor.
• Sonnar T*, Vario-Sonnar T*, Distagon T*, or Planar T* is inserted at the beginning of a Carl Zeiss® lens’ name.

The typical codes used at the end of an E-mount lens’ name:

• G denotes the Gold standard and identifies a Sony G lens.
• GM denotes a G Master or Gold Master lens and identifies the G Master series lenses which is an improved version of the G lenses.
• ZA denotes Zeiss Alpha and identifies a Carl Zeiss Lens.
• Macro denotes a macro lens.
• OSS is Optical Steady-Shot which is an in-lens optical camera-shake compensation function.
• LE stands for Light Edition lens. This edition achieves lighter weight and downsizing.
• II, 2 the number 2 at the end indicates that it is the second generation.
  Examples:
  • FE 24-70mm F2.8 GM II (SEL2470GM2)
  • E PZ 16-50mm F3.5-5.6 OSS II (SELP16502)

1. Focal length. When this value is a range, the lens is a zoom lens. When this value is a single number, the lens is a single focus lens.
2. F-value which indicates how fast the lens is based on aperture settings.
   • The F-value indicated by the name of a lens is the F-value when the lens is wide open (the minimum F-value).
   • The smaller the value, the faster the lens is.
3. The name of an A-mount lens starts with SAL (e.g. SAL55300).

The typical codes used at the beginning of a A-mount lens’ name:

• DT denotes a lens for a camera with an APS-C size image sensor. A lens whose name has no DT at the beginning is compatible with a camera that has a 35 mm full-frame image sensor.
• Sonnar T*, Vario-Sonnar T*, Distagon T*, or Planar T* is inserted at the beginning of a Carl Zeiss® lens’ name.

The typical codes used at the end of a A-mount lens’ name:

Note: SSM and SAM are types of autofocus drive control systems.

• G denotes the Gold standard and identifies a Sony G lens.
• ZA denotes Zeiss Alpha and identifies a Carl Zeiss Lens.
• Macro denotes a macro lens.
• Fisheye is a fisheye lens.
• Types of lens auto focus drive control systems:
  • SSM denotes a Super Sonic wave Motor.
  • SSM II is an improved version of SSM.
  • SAM denotes a Smooth Autofocus Motor.
  • II, 2 The number 2 at the end indicates that it is the second generation.
    Example:
    • 300mm F2.8 G SSM II (SAL300F28G2)
    • 70-300mm F4.5-5.6 G SSM II (SAL70300G2)