Chris, On the E 20 N, I have the ISO choices of 80, 160, and 320. However, your technique for metering the situation is correct, in my opinion. Bill Ellis wb9cac@xxxxxxxxxxx ----- Original Message ----- From: "Chris" <nimbo@xxxxxxxxxxxxxx> To: "List for Photo/Imaging Educators - Professionals - Students" <photoforum@xxxxxxxxxxxxxxxxxxxxxx> Sent: Friday, January 16, 2004 9:07 PM Subject: RE: Digital Flash > > I suppose you set the film speed to 100 iso and then use a flashmeter to > calculate the exposure. I suppose you keep the pop-up camera flash popped > down. > Chris. > http://www.chrisspages.co.uk