HASSELBLAD Extension Tubes Instruction Manual 
This Instruction Manual is common for the types of Hasselblad extension
tubes listed below: 40649 ExtensionTube 8 40655 ExtensionTube 32E

	40654 Extension Tube 1 6E	40656 Extension Tube 56E

	40649	8

	40654	16E

	40655	32E

	40656	56E

Parts and Components
1. Tube body 5. Lens drive shaft
2. Attaching index 6. Drive shaft catch
3. Contact bridge (not tube 8) 7. Bayonet plate
4. Lens catch lever 8. Scale transfer lines

Legend to the diagram

E: Extension. 
Top row indicates single extension tube or combination of tubes. Lower
row indicates length of extension in mm and inches Note that
combinations with tube 8 breaks up the databus path.

O: Lens type.

R: Degree of magnification
D: Depth-of-field at f/11 in mm
L: Length of square subject area side in mm
EV: Light value reduction (EV-steps)


Coverage by an extension tube or a combination of tubes, defined by the
thin vertical line at the left hand end of the heavy blue/red line
representing the tube or tube combination.

The different colors are used to separate different tubes or tube
combinations. The l.h. end of the blue/red line represents the lens
focused at infinity, and the length of the line shows the extension
obtained by the lens's focusing means

The diagram is continuous but for practical reasons split at the
extension of 50 mm.

How to use the diagram Example 1:

Makro-Planar 4/1 20mm lens; extension tube 32E.

1. Select the lens type in the far l.h. column.

2. Select the tube or combination of tubes you are using.

3. Follow the thin vertical "tube" line until it crosses the blue/red
"lens" line.

4. Read the applicable data from the information in the lens field. At
the line crossing in the lens field you can read:

Magnification R = approx. 0.27
Depth-of-field D = 25 mm

Area covered L = approx. 220 x 220 mm EV reduction EV = 0.5 step

NOTE: The blue line representing the tube 32E continues into the r.h.
diagram page.


Example 2: Sonnar FE 2,8/150 mm lens; 150 x 150 mm coverage.

1. Select the lens type in the far l.h. column.
2. Follow the L row into the r.h. diagram page to 150.

3. Read the applicable data from the information in the lens field.

There you have the choice of the combination of tubes 32E and 1 6E with
the lens focused (the red line) or the tube 56E with the lens at
infinity (the start of blue line)

Magnification R = approx. 0.37

Depth-of-fieid D = approx. 15 mm EV reduction EV = 1 step

Attachment:

The extension tube is aKached to the camera body in exactly the same way
as a lens. Thus you have to verify that the camera is rewound by
checking that the winding crank cannot be turned and that the drive
shaft is in the proper position (see the camera manual). Also check that
the drive shaft in the extension tube is cocked in the same way as a
lens drive shaft. Line up the index marks in the lens mount on the
camera and on the tube, insert the tube and turn it clockwise until it
stops with a faint click as it locks in place.

NOTE: Always attach the tube to the camera body first and then further
tubes and finally the lens to the tube.

Never attach the tube to the lens separately! It may then jam the lens
mechanism.

If more tubes are added they may create vignetting when the extension
becomes extreme.

Extension tube 8

ExtensionTube 8 cannot be attached to the Hasselblad 200 and 2000 series
camera bodies. It can, however, be used as addition if any other tube is
attached to the camera body first.

Furthermore, it has no contacts for the data bus in the FE lenses. When
used in a Hasselblad metering system it interrupts the data transmission
from the lens to the camera body, limiting the functions of the metering
system in applicable camera bodies.

Removal:

First depress the lens catch lever on the extension tube and remove the
lens. Then remove each tube successively; the last one by depressing the
lens catch button on the camera body.

Never remove the lens and tubes together!

NOTE: If a 500-series camera with an extension tube 8 but no lens
attached is released and rewound it may occur that neither a lens nor
another extension tube can be attached.

Remove the tube 8 and re-attach it and then attach the other equipment
as usual.