Zhumell RF645 manual Depth of Field

Page 24

4. Other Features

4-6 Depth of Field

4-6 Depth of Field

Since the Bronica RF 645 is a coupled rangefinder camera compro- mising separate shooting and viewfinder optical systems, the sharp focus range is not directly displayed in the viewfinder. The depth of field must therefore be read from the depth of field scale on the lens, or calculated from the depth of field table.

1.To read the depth of field on the lens, focus on a subject, then read two distances on the distance scale between the pair of depth-of-field lines corresponding to the f-number set on the aperture ring. In the illustration, the 65mm lens is focused on a subject at 3 meters with its aperture set at f/8. The depth of filed range of approximately 2.5 to 4 meters is found between the pair of f/8 lines on the depth of field scale. The subjects within these two distances will be photographed in sharp focus. On the depth of field table of the 65mm lens, the box located where the horizontal line for 3 meters and the vertical column for the f/8 intersect includes the distance range corre sponding to the depth of field of 2.52 to 3.71 meters.

Note: The depth of field tables for lenses other than the 65mm lens is printed on the instruction manual of each lens.

 

Distance(m)

F4

F5.6

F8

F11

F16

F22

F32

 

 

 

 

 

 

 

 

 

 

1.0

0.96 - 1.04

0.95 - 1.06

0.92 - 1.09

0.90 - 1.13

0.86 - 1.20

0.82 - 1.30

0.75 - 1.52

 

 

 

 

 

 

 

 

 

 

1.2

1.14 - 1.27

1.12 - 1.29

1.09 - 1.34

1.05 - 1.40

1.00 - 1.52

0.94 - 1.69

0.85 - 2.08

 

 

 

 

 

 

 

 

 

 

1.5

1.41 - 1.61

1.37 - 1.66

1.32 - 1.73

1.27 - 1.84

1.19 - 2.06

1.10 - 2.40

0.98 - 3.33

 

 

 

 

 

 

 

 

 

 

2

1.83 - 2.21

1.77 - 2.30

1.69 - 2.46

1.60 - 2.69

1.46 - 3.20

1.33 - 4.15

1.16 - 8.28

 

 

 

 

 

 

 

 

 

 

3

2.62 - 3.50

2.50 - 3.76

2.33 - 4.22

2.16 - 4.98

1.91 - 7.16

1.69 - 15.2

1.41 - oo

 

 

 

 

 

 

 

 

 

 

5

4.01 - 6.63

3.73 - 7.63

3.36 - 9.88

3.00 - 15.7

2.54 - 722

2.15 - oo

1.71 - oo

 

 

 

 

 

 

 

 

 

 

10

6.67 - 20.1

5.89 - 33.7

5.01 - oo

4.23 - oo

3.36 - oo

2.70 - oo

2.04 - oo

 

 

 

 

 

 

 

 

 

 

oo

19.0 - oo

13.7 - oo

9.69 - oo

7.10 - oo

4.92 - oo

3.60 - oo

2.50 - oo

65mm

 

 

 

 

 

 

 

 

Distance (ft)

F4

F5.6

F8

F11

F16

F22

F32

 

 

 

 

 

 

 

 

 

 

3.5

3.35 - 3.67

3.29 - 3.74

3.21 - 3.85

3.12 - 4.00

2.97 - 4.28

2.81 - 4.68

2.59 - 5.54

 

 

 

 

 

 

 

 

 

 

4

3.80 - 4.22

3.73 - 4.32

3.62 - 4.48

3.50 - 4.69

3.31 - 5.09

3.11 - 5.67

2.83 - 7.04

 

 

 

 

 

 

 

 

 

 

5

4.68 - 5.37

4.57 - 5.53

4.40 - 5.80

4.21 - 6.17

3.94 - 6.91

3.65 - 8.09

3.26 - 11.4

 

 

 

 

 

 

 

 

 

 

7

6.37 - 7.78

6.15 - 8.14

5.85 - 8.75

5.51 - 9.66

5.03 - 11.7

4.55 - 15.8

3.94 - 37.7

 

 

 

 

 

 

 

 

 

 

10

8.73 - 11.7

8.31 - 12.6

7.75 - 14.2

7.15 - 16.8

6.34 - 24.4

5.59 - 54.4

4.67 - oo

 

 

 

 

 

 

 

 

 

 

15

12.3 - 19.3

11.4 - 21.9

10.4 - 27.3

9.32 - 39.5

7.96 - 158

6.79 - oo

5.46 - oo

 

 

 

 

 

 

 

 

 

 

30

20.6 - 55.3

18.3 - 83.8

15.7 - 369

13.4 - oo

10.7 - oo

8.65 - oo

6.57 - oo

 

 

 

 

 

 

 

 

 

 

oo

63.4 - oo

45.6 - oo

32.1 - oo

23.4 - oo

16.2 - oo

11.9 - oo

8.22 - oo

 

 

 

 

 

 

 

 

 

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Contents RF645 Contents ·The remarkable lens shutter system ·Hi-tech magnesium alloy Thixmolding·Easy AE lock method with continuous AE lock memory system Nomenclature Getting Started Getting Started Attaching the LensDetaching the Lens Attaching the Proper Diopter Adjustment Lens Attaching the StrapGetting Started Check Battery Capacity Preparing to ShootLoading Film Preparing to Shoot Setting Film Speed Film winding and ratcheted winding leverHow to Remove a Used Roll of Film Film Memo Holder100 200 400 800 25 26 28 29Main Switch ShootingShooting Viewfinder Holding the CameraShutter Release Button ViewfinderShooting Shutter release button Viewfinder DisplayExposures Shutter Dial and Lens Aperture Operations Exposure Metering System ExposuresProgram AE mode Aperture priority AE modeExposure Control Modes Exposures Exposure CompensationManual Exposure Control Focusing Shooting ExposuresAE Lock Other Features Automatic Parallax CompensationMultiple Exposures Split image focusSelftimer Automatic Shutter Speed Adjustment Automatic Lens Aperture and Film Speed SettingsElectronic Flash Photography Manual Flash Exposure ControlOther Electronic Flash Features Long Exposure PhotographyInfrared Photography Depth of Field Troubleshooting What’sHappening Cancel AE lock Press AE L AL mark Mode What’s Cause of trouble Means to solve How to operate Means to solve How to operateCause of trouble Means to solve How to operate References Exposure Measuring Range and EvSpecifications ShutterFilm Advance Preliminary Checklist Before loading film Activate the main switchObserve the LCD panel in the viewfinder Test shutter actionAbout the Batteries Storage and Maintenance LCD Liquid Crystal DisplayOperational Conditions of Camera
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