Image Sensor for Mobile

In-sensor HDR functions

Outdoor in the daytime, the difference in brightness between direct sunlight and tree shade can easily exceed a factor of 10,000, creating a difference in photographic subject brightness called dynamic range. Ordinary image sensors designed for mobile applications are unable to capture a dynamic range in excess of 1000 in a single image.
Sony's HDR (High Dynamic Range) Function addresses the need to take pictures with clarity in both dark and bright areas. It is effective in situations including:

  1. Commemorative photos against a bright background
  2. Scenery photography
    Sony's HDR Function beautifully captures the colors of the sky and nuances of clouds without overly darkening the land or sea.
  3. Shooting in direct sunlight
    In areas of excessive luminous intensity, where shadows may appear too dark or subjects may appear glaring, Sony's HDR Function enables beautiful pictures.

General HDR method: Synthesis of multiple images

Conventional HDR functions can only be used when taking still pictures, with a single press of the shutter taking multiple images using higher, standard, and lower exposure. These images are synthesized by an application to generate a single image. However, the image requires time to process, and its quality remains unknown until it is synthesized and saved. In addition, a moving subject may not be captured accurately.

In-sensor HDR technology

Two exposure conditions are configured when shooting, with appropriate signal processing applied to the captured image through hardware.
Applicable products: IMX135, IMX219PQ

Figure 1: Short exposure, Long exposure