Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision | Next revision Both sides next revision | ||
|
stacker:docs:tables:macromicrodof [2020/03/29 03:26] rjlittlefield added more comments about COC |
stacker:docs:tables:macromicrodof [2020/10/15 02:25] rjlittlefield update tables to use formula more accurate for large NA |
||
|---|---|---|---|
| Line 93: | Line 93: | ||
| ^ 2.0 | 0.020 mm | **0.039 mm ** | **0.079 mm ** | **0.16 mm ** | //0.32 mm // | //0.60 mm // | //1.3 mm // | //2.4 mm // | | ^ 2.0 | 0.020 mm | **0.039 mm ** | **0.079 mm ** | **0.16 mm ** | //0.32 mm // | //0.60 mm // | //1.3 mm // | //2.4 mm // | | ||
| ^ 2.5 | 0.017 mm | **0.034 mm ** | **0.069 mm ** | //0.14 mm // | //0.28 mm // | //0.52 mm // | //1.1 mm // | //2.1 mm // | | ^ 2.5 | 0.017 mm | **0.034 mm ** | **0.069 mm ** | //0.14 mm // | //0.28 mm // | //0.52 mm // | //1.1 mm // | //2.1 mm // | | ||
| - | ^ 3.5 | **0.015 mm ** | **0.029 mm ** | **0.058 mm ** | //0.11 mm // | //0.23 mm // | //0.44 mm // | //0.93 mm // | //1.8 mm // | | + | ^ 3.5 | **0.014 mm ** | **0.028 mm ** | **0.058 mm ** | //0.11 mm // | //0.23 mm // | //0.44 mm // | //0.93 mm // | //1.8 mm // | |
| ^ 5.0 | **0.013 mm ** | **0.025 mm ** | //0.051 mm // | //0.099 mm // | //0.20 mm // | //0.38 mm // | //0.81 mm // | //1.5 mm // | | ^ 5.0 | **0.013 mm ** | **0.025 mm ** | //0.051 mm // | //0.099 mm // | //0.20 mm // | //0.38 mm // | //0.81 mm // | //1.5 mm // | | ||
| - | ^ 7.0 | **0.011 mm ** | //0.023 mm // | //0.046 mm // | //0.090 mm // | //0.18 mm // | //0.35 mm // | //0.74 mm // | //1.4 mm // | | + | ^ 7.0 | **0.011 mm ** | //0.022 mm // | //0.046 mm // | //0.090 mm // | //0.18 mm // | //0.35 mm // | //0.74 mm // | //1.4 mm // | |
| - | ^ 10 | //0.011 mm // | //0.021 mm // | //0.043 mm // | //0.083 mm // | //0.17 mm // | //0.32 mm // | //0.68 mm // | //1.3 mm // | | + | ^ 10 | //0.011 mm // | //0.021 mm // | //0.042 mm // | //0.083 mm // | //0.17 mm // | //0.32 mm // | //0.68 mm // | //1.3 mm // | |
| - | ^ 14 | //0.010 mm // | //0.020 mm // | //0.040 mm // | //0.079 mm // | //0.16 mm // | //0.31 mm // | //0.65 mm // | //1.2 mm // | | + | ^ 14 | //0.0100 mm // | //0.020 mm // | //0.040 mm // | //0.079 mm // | //0.16 mm // | //0.31 mm // | //0.65 mm // | //1.2 mm // | |
| - | ^ 20 | //0.0097 mm // | //0.019 mm // | //0.039 mm // | //0.076 mm // | //0.16 mm // | //0.29 mm // | //0.62 mm // | //1.2 mm // | | + | ^ 20 | //0.0096 mm // | //0.019 mm // | //0.039 mm // | //0.076 mm // | //0.16 mm // | //0.29 mm // | //0.62 mm // | //1.2 mm // | |
| - | Numbers in the above table can be reproduced by the formula DOF = (0.0022*N*N*(m+1)*(m+1))/(m*m) , where N is the F-number and m is magnification. \\ | + | |
| + | Numbers in the above table can be closely reproduced by the formula DOF = (0.0022*N*N*(m+1)*(m+1))/(m*m) , where N is the F-number and m is magnification. \\ | ||
| Example: F-number 5.6 and magnification 0.50 computes as DOF = (0.0022*5.6*5.6*(0.50+1)*(0.50+1))/(0.50*0.50) = 0.6209 . | Example: F-number 5.6 and magnification 0.50 computes as DOF = (0.0022*5.6*5.6*(0.50+1)*(0.50+1))/(0.50*0.50) = 0.6209 . | ||
| Line 125: | Line 126: | ||
| ^ 0.50 | 0.035 mm | 0.069 mm | 0.14 mm | 0.28 mm | **0.56 mm ** | **1.1 mm ** | **2.3 mm ** | //4.3 mm // | | ^ 0.50 | 0.035 mm | 0.069 mm | 0.14 mm | 0.28 mm | **0.56 mm ** | **1.1 mm ** | **2.3 mm ** | //4.3 mm // | | ||
| ^ 0.70 | 0.018 mm | 0.035 mm | 0.072 mm | 0.14 mm | **0.29 mm ** | **0.54 mm ** | **1.1 mm ** | //2.2 mm // | | ^ 0.70 | 0.018 mm | 0.035 mm | 0.072 mm | 0.14 mm | **0.29 mm ** | **0.54 mm ** | **1.1 mm ** | //2.2 mm // | | ||
| - | ^ 1.0 | 0.0088 mm | 0.017 mm | 0.035 mm | 0.069 mm | **0.14 mm ** | **0.27 mm ** | **0.56 mm ** | //1.1 mm // | | + | ^ 1.0 | 0.0087 mm | 0.017 mm | 0.035 mm | 0.069 mm | **0.14 mm ** | **0.27 mm ** | **0.56 mm ** | //1.1 mm // | |
| - | ^ 1.4 | 0.0045 mm | 0.0088 mm | 0.018 mm | 0.035 mm | **0.072 mm ** | **0.14 mm ** | **0.29 mm ** | //0.54 mm // | | + | ^ 1.4 | 0.0043 mm | 0.0087 mm | 0.018 mm | 0.035 mm | **0.072 mm ** | **0.14 mm ** | **0.29 mm ** | //0.54 mm // | |
| - | ^ 2.0 | 0.0022 mm | 0.0043 mm | 0.0088 mm | 0.017 mm | **0.035 mm ** | **0.067 mm ** | **0.14 mm ** | //0.27 mm // | | + | ^ 2.0 | 0.0021 mm | 0.0042 mm | 0.0087 mm | 0.017 mm | **0.035 mm ** | **0.066 mm ** | **0.14 mm ** | //0.27 mm // | |
| - | ^ 2.5 | 0.0014 mm | 0.0028 mm | 0.0056 mm | 0.011 mm | **0.023 mm ** | **0.043 mm ** | **0.090 mm ** | //0.17 mm // | | + | ^ 2.5 | 0.0013 mm | 0.0026 mm | 0.0055 mm | 0.011 mm | **0.022 mm ** | **0.042 mm ** | **0.090 mm ** | //0.17 mm // | |
| - | ^ 3.5 | 0.00072 mm | 0.0014 mm | 0.0029 mm | 0.0056 mm | **0.011 mm ** | **0.022 mm ** | **0.046 mm ** | //0.087 mm // | | + | ^ 3.5 | 0.00053 mm | 0.0013 mm | 0.0027 mm | 0.0055 mm | **0.011 mm ** | **0.022 mm ** | **0.046 mm ** | //0.087 mm // | |
| - | ^ 5.0 | --- | 0.00069 mm | 0.0014 mm | 0.0028 mm | **0.0056 mm ** | **0.011 mm ** | **0.023 mm ** | //0.043 mm // | | + | ^ 5.0 | --- | 0.00050 mm | 0.0013 mm | 0.0026 mm | **0.0055 mm ** | **0.011 mm ** | **0.022 mm ** | //0.042 mm // | |
| - | Numbers in the above table can be reproduced by the formula DOF = (0.0022*N*N)/(m*m), where N is the F-number and m is magnification. \\ | + | Numbers in the above table can be closely reproduced by the formula DOF = (0.0022*N*N)/(m*m), where N is the F-number and m is magnification. \\ |
| - | Example: F-number 5.6 and magnification 0.35 computes as DOF = (0.0022*5.6*5.6)/(0.50*0.50) = 0.2760 . | + | Example: F-number 5.6 and magnification 0.50 computes as DOF = (0.0022*5.6*5.6)/(0.50*0.50) = 0.2760 . |
| \\ | \\ | ||
| Line 145: | Line 146: | ||
| | 0.14 | 0.028 mm | | | 0.14 | 0.028 mm | | ||
| | 0.2 | 0.014 mm | | | 0.2 | 0.014 mm | | ||
| - | | 0.25 | 0.0088 mm | | + | | 0.25 | 0.0087 mm | |
| - | | 0.3 | 0.0061 mm | | + | | 0.3 | 0.0060 mm | |
| - | | 0.4 | 0.0034 mm | | + | | 0.4 | 0.0033 mm | |
| - | | 0.5 | 0.0022 mm | | + | | 0.5 | 0.0021 mm | |
| - | | 0.55 | 0.0018 mm | | + | | 0.55 | 0.0017 mm | |
| - | Numbers in the above table can be reproduced by the formula DOF = 0.00055/(NA*NA) . \\ | + | |
| + | Numbers in the above table can be closely reproduced by the formula DOF = 0.00055/(NA*NA) . \\ | ||
| Example: NA 0.25 computes as DOF = 0.00055/(0.25*0.25) = 0.0088 . | Example: NA 0.25 computes as DOF = 0.00055/(0.25*0.25) = 0.0088 . | ||