# Talk:UBASIC/Scripts: Focus Bracketing with set focus and get focus

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The focus would be set according to $\left(1+\frac{b}{6}\right)^sf$ so that $f$ is the initial focus and $s=-a..a$ for the default of $a=2,b=6$ assuming $g=100mm$ we have Dashesy 19:24, 28 May 2008 (UTC) dashesy Dashesy 19:24, 28 May 2008 (UTC)