Of those, f6.3 is only @ 1/3 stop wider than f8, and f45 is two stops smaller than f22. Is it possible an additional marking before 45 has been obscured?
Allen Zak
On Feb 25, 2010, at 10:59 AM, Allan Daniel wrote:
Thank you so much, Eric.
On Thu, Feb 25, 2010 at 10:06 AM, Eric Goldstein <egoldste@xxxxxxxxx> wrote:
Eric Goldstein
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On Thu, Feb 25, 2010 at 9:53 AM, Allan Daniel <allandan500@xxxxxxxxx> wrote:
I hope one the more knowledgable members can help me. I have an old large format lens and shutter that uses an older method of f-stop progressions, and I’m not certain what the progression is. The progression (with missing numbers) is:
6.3, 8, 11, ?, ?, 45
can anyone fill in the missing numbers?
Allan W
