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15 Σεπ 2015 · So, for this lens focal length and shooting in that mid range (20 - 40 feet), 1/3 - 2/3 may be an acceptable rule of thumb. But for applications that require critical focus, it’s best to calculate precise values.
20 Μαΐ 2014 · A better generalization or Rule of Thumb would be to say: For MOST NORMAL to WIDE FRAMING of The Shot, the DoF extends 2/3 behind and 1/3 in front of the Plane of Sharp Focus. As already mentioned it is the PLANE of Sharp Focus (not the 'point' of sharp focus).
17 Αυγ 2018 · To get a 1:2 ratio we must focus the 300mm lens at f/4 to 769 feet. At that point the DoF will be distributed 192 foot in front and 384 feet behind the 769 feet point of focus (all distances rounded to the nearest foot). With a 30mm lens at f/4 the 1:2 ratio is achieved at a focus distance of 92 inches.
იყიდება დესკტოპ კომპიუტერი | ახალი და მეორადი ნივთების ყიდვა, გაყიდვა, გაქირავება; ონლაინ განვადებით და ადგილზე მიტანით.
This depth of field chart is the fastest way to have your DoF calculations done. Also, it comes in very handy to visualize how depth of field changes with aperture and subject distance for the selected camera and focal length.
Υπολογιστής Γραφικών. Interactive, free online graphing calculator from GeoGebra: graph functions, plot data, drag sliders, and much more!
C = 2 * π * r. Οπου: C = περιφέρεια του κύκλου r = ακτίνα του κύκλου π = Pi, που είναι περίπου ίση με 3,14159. Για να υπολογίσετε την ακτίνα ενός κύκλου, ακολουθήστε τα εξής βήματα:
