Originally Posted by peety3
Thanks peety, That's why I always use the phrase "I think the....."
So, inorder to balance the two Mark will need to do a little calculating. So the 430 has 43/58 the power of the 580? Is that correct?
Rounded out with about a 1/3stop margin of error and I'd say 2/3 the power. Correct? So, to get a 2:1 ratioof the 430 to the 580 (that would be the 430 used as the key) Mark would need to set the 430 at full and the 580 to 1/4 power. Oh, but wait, We haven't accounted for the subject distance. Dang, this is going to get confusing.
That's what makes using Vivitars so much fun!! They're identical.
Mark, practice at home the best you can. Good Luck and God Bless you brother.....
peety?........what say you?
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