photo.forum

Here is a DIY electronic assembly which is a spectrometer,
flash meter and light meter based on an AS7341 sensor and ESP32 microcontroller.
It also includes a depth of field calculator,
but also a CTO and CTB gelatin calculator to homogenize the colorimetry of light sources.

This is the link :
http://thierrydphotographe.free.fr/index.php/2025/02/01/spectrometer-light-meter-flash-meter-for-photographer/

and the link in french :
http://thierrydphotographe.free.fr/index.php/2025/02/01/spectrometre-posemetre-flashmetre-pour-photographe/