Apparently, there is a new ISO method - "ERS" | Technical Discussions | The-Photo Forum

link

xpatUSA
Members 1570 posts

July 19, 2026, 8:49 p.m. July 19, 2026, 8:49 p.m.
link

Doug Kerr has written:

openphotographyforums.com/forums/threads/another-iso-12232-metric-of-digital-camera-sensitivity.26837/

Additional to ISO Speed, SOS, REI, etc.