Avoiding camera shake is the best way to improve focus with these high magnifications.... (such as going real easy on the cable release) aperture priority (wide open), iso 200, 1/210, exp comp plus 0.3 -- Nikon Coolpix p5100 Swarovski 80HD/30x SW WA eyepiece Swarovski DCA adaptor with Nikon UR-E20 (28mm) cable release