RF Accuracy Chart
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ABCDEFGHIJKLMNOPQRSTUVWXYZAAABACADAEAFAGAH
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e0.0003
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Epson RD1RD1+1.3*Bessa TBessa RBessa R2Bessa R3R3+1.3*Bessa R4Canon 7 7s 7sZCanon PLeica II - IIIgCLCLELeica M 0.58Leica M 0.72Leica M 0.85Leica 0.72 + 1.3*Leica 0.72 + 1.5*M3M8Hexar RFNikon S3/SP
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COCz0.0200.0200.0300.0300.0300.0300.0300.0300.0300.0300.0300.0300.0300.0300.0300.0300.0300.0300.0300.0230.0300.030
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EBLb38.249.753.725.225.237.048.119.247.241.058.518.928.839.749.369.959.274.062.346.641.158.0
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351.240%31%19%41%41%28%21%53%22%25%17%54%35%26%21%15%17%14%16%28%25%18%
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401.445%35%21%45%45%31%24%59%24%28%20%60%40%29%23%16%19%15%18%32%28%20%
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431.938%29%18%39%39%26%20%51%21%24%17%51%34%24%20%14%16%13%16%27%24%17%
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50198%76%47%99%99%68%52%130%53%61%43%132%87%63%51%36%42%34%40%70%61%43%
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501.189%69%42%90%90%61%47%118%48%55%39%120%79%57%46%33%38%31%36%63%55%39%
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501.282%63%39%83%83%56%43%108%44%51%36%110%72%52%42%30%35%28%33%58%51%36%
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501.470%54%33%71%71%48%37%93%38%44%31%94%62%45%36%26%30%24%29%50%43%31%
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601.2118%91%56%119%119%81%62%156%64%73%51%159%104%76%61%43%51%41%48%84%73%52%
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751.4158%121%75%160%159%109%84%209%85%98%69%213%140%101%81%58%68%54%64%112%98%69%
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752110%85%52%112%112%76%58%146%60%69%48%149%98%71%57%40%48%38%45%78%68%48%
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752.588%68%42%89%89%61%47%117%48%55%38%119%78%57%46%32%38%30%36%63%55%39%
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851.5189%145%90%191%191%130%100%250%102%117%82%255%167%121%98%69%81%65%77%134%117%83%
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851.8158%121%75%160%159%108%83%209%85%98%69%212%140%101%81%57%68%54%64%112%98%69%
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852142%109%67%144%143%98%75%188%77%88%62%191%126%91%73%52%61%49%58%101%88%62%
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902159%122%75%161%161%109%84%210%86%99%69%214%141%102%82%58%68%55%65%113%99%70%
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902.5127%98%60%129%129%88%67%168%69%79%55%171%113%82%66%46%55%44%52%90%79%56%
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902.8114%87%54%115%115%78%60%150%61%71%49%153%101%73%59%41%49%39%46%81%70%50%
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903.591%70%43%92%92%63%48%120%49%56%40%122%80%58%47%33%39%31%37%65%56%40%
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90480%61%38%80%80%55%42%105%43%49%35%107%70%51%41%29%34%27%32%57%49%35%
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905.657%44%27%57%57%39%30%75%31%35%25%77%50%36%29%21%24%20%23%40%35%25%
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1002196%151%93%199%198%135%104%260%106%122%85%265%174%126%101%72%84%68%80%140%122%86%
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1052.5173%133%82%175%175%119%92%229%93%108%75%233%153%111%89%63%74%60%71%123%107%76%
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**1352.8170%131%81%n/a172%117%90%226%n/an/an/a230%151%109%88%62%110%59%70%121%106%n/a
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1353.5204%157%97%207%207%141%108%271%110%127%89%276%181%131%106%75%88%70%84%145%127%90%
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1354179%138%85%181%181%123%95%237%97%111%78%241%158%115%92%65%77%62%73%127%111%79%
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1354.5159%122%75%161%161%109%84%210%86%99%69%214%141%102%82%58%68%55%65%113%99%70%
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1355.6128%98%61%129%129%88%68%169%69%79%56%172%113%82%66%47%55%44%52%91%79%56%
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Does not account for different minimum focus.
V6, (e * f^2) / (k * z) / b' where b' is the effective base length of the rangefinder, e the visual acuity (0.0003 at approx. 1 arcmin),
f the focal length, k the aperture and z the circle of confusion (0.020mm for APS-C, 0.030mm for 35mm film).
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*with eyepiece magnifier
COC=circle of confusion
EBL=effective base length
**135/2.8 Elmarit-M has 1.5x viewfinder goggles
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