-------------------------------------------------------------------- for 3 1/2 inch lens; CLOSEUP critical quality based on H=2700 F/f -------------------------------------------------------------------- focus(in) bellows(in) far(in) near(in) DOF for f-4 12 4.9 12.06 11.93 .12 10 5.3 10.04 9.95 .08 7 7 7.02 6.97 .04 6 8.4 6.01 5.98 .03 4.5 15.75 4.50 4.49 .02 focus(in) bellows(in) far(in) near(in) DOF for f-8 12 4.9 12.12 11.87 .24 10 5.3 10.08 9.91 .16 7 7 7.04 6.95 .08 6 8.4 6.03 5.96 .06 4.5 15.75 4.51 4.48 .03 focus(in) bellows(in) far(in) near(in) DOF for f-16 12 4.9 12.24 11.76 .48 10 5.3 10.17 9.83 .33 7 7 7.08 6.91 .16 6 8.4 6.06 5.93 .12 4.5 15.75 4.53 4.46 .06 focus(in) bellows(in) far(in) near(in) DOF for f-32 12 4.9 12.50 11.53 .97 10 5.3 10.35 9.67 .67 7 7 7.16 6.83 .33 6 8.4 6.12 5.88 .24 4.5 15.75 4.56 4.43 .13 -------------------------------------------------------------------- for 6 inch lens; CLOSEUP critical quality based on H=2700 F/f ------------------------------------------------------------------- focus(in) bellows(in) far(in) near(in) DOF for f-4 24 8 24.14 23.85 .28 18 9 18.08 17.92 .16 15 10 15.05 14.94 .11 12 12 12.03 11.96 .07 9 18 9.02 8.98 .04 focus(in) bellows(in) far(in) near(in) DOF for f-8 24 8 24.28 23.71 .56 18 9 18.16 17.84 .32 15 10 15.11 14.88 .22 12 12 12.07 11.92 .14 9 18 9.04 8.96 .08 focus(in) bellows(in) far(in) near(in) DOF for f-16 24 8 24.58 23.44 1.13 18 9 18.32 17.68 .64 15 10 15.22 14.78 .44 12 12 12.14 11.85 .28 9 18 9.08 8.92 .16 focus(in) bellows(in) far(in) near(in) DOF for f-32 24 8 25.19 22.91 2.28 18 9 18.66 17.38 1.28 15 10 15.45 14.56 .88 12 12 12.29 11.72 .56 9 18 9.16 8.84 .32