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Hello,
Well, basically, the flash has to provide enough light to lighten the shadows but less than the highlights. So measure the highlights with a suitable meter to give an aperture at the 60th second synch speed then use a flash meter to measure the light in the shadows with the flash. Then use the 9 point Ansel Adams scale to put the shadow about 6 points darker than the highlights. That will ensure detail in both the highlights at about 8 and the deepest shadow at about 2.
That can be expressed at EV, but I’m unsure of the conversion, if I remember rightly, each of Ansel’s points is one stop different from the next one and they range from 1 at the deepest shadow (with some detail) to 9 the brightest highlight which retains detail.
I hope that makes sense, I was taught by Dr Ingle, who is a well known local photographer, however I’ve found it difficult to apply his methods to my digital snapshots. He trained me on a 5x4 and a MF setup with a spotmeter. He used a home made dial to convert the Ansel scale to EV.
Chris.
-----Original Message-----
We are discussing using an on camera flash unit, while photographing people outside. Here in the desert we get very contrasty shadows on faces.
Thank you.
Marilyn ________________________________
Leave gentle fingerprints on the
Proverb
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