They are for computing, not timing, time exposures with the meter. ----- Original Message ----- From: Frederic Fichter To: rollei_list@xxxxxxxxxxxxx Sent: Tuesday, November 01, 2005 6:55 AM Subject: [rollei_list] rolleiflex t question Does anybody have a clue what purpose are the green figures on the shutter speed scale of a Rolleiflex T for ? Fred Fichter Web : http://homepage.mac.com/ffichter