HLG Photos Defined

“HLG photos” are photos that support a wider range of brightnesses (i.e., dynamic range) than do SDR (Standard Dynamic Range) JPEG pictures. The Z 8 supports HLG with two formats: RAW (extension “.NEF”) and HEIF (extension “.HIF”).

HLG

Developed for television broadcasting and other high-definition applications, Hybrid Log-Gamma (HLG) technology is a High Dynamic Range (HDR) standard that allows for photographs with a wider range of tones, minimizing loss of detail in highlights and shadows.

Compared with Standard Dynamic Range (SDR), it increases the amount of detail that can be expressed in the upper half of the tone range for greater rendering potential.
It matches SDR in the level of detail that can be expressed in the lower portion of the tone range to ensure compatibility with non-HDR displays.