Auteur: Jean-Claude Launey
Date: 13-01-2007 14:33
J'ai la flemme de traduire mais voila ce qu'on en dit ( j'ai perdu la source du texte ):
The patented aspheric design of the ball increases drag on the ball to progressively slow inadvertent tilts to prevent or minimise possible damage to your camera or lens.
With the head tightened, mount the lightest combination of camera and lens you will regularly use. Turn the small thumbscrew (located on the multifunction knob) by rotating it counter clockwise till it stops. Now turn the multifunction knob counter clockwise until you reach the desired minimum degree of friction. This can range from completely free or to as little or as much drag as you desire. Turn the thumb screw clockwise until it stops. You have now set your minimal friction limit for this camera and lens combination. The multifunction knob will now not turn beyond this minimal friction limit.
If in the future you wish mount a heavier combination you will need to increase the tension on the ball (by turning the multifunction knob clockwise according to the weight of the camera and lens combination and re-adjust the minimum desired friction "set" by turning the friction thumbscrew clockwise.
IMPORTANT: To lower your minimal friction limit turn the multifunction knob clockwise and then turn the friction screw counter clockwise until the multifunction knob and ball move freely enough for you to adjust your new minimal friction limit. Never force the multifunction knob to turn beyond the set minimal friction point. Attempting to do so will cause the multifunction knob to lock up. (See the "Attention!" Note.) The Reference Scale If you use more than one combination of camera and lens you may wish to use the rotating reference scale as a reminder of your settings.
With your regular lightest camera & lens combination mounted and the Monoball® set to the desired minimum tension, rotate the scale on the multifunction knob so the zero lines up with the reference mark on the head. Now if you attach a heavier combination you adjust to the desired tension and read the reference number. If you often use many different cameras & lens combinations you do not have to calibrate the tension each time: just use the reference numbers you have predetermined.
et encore :
Frequent Misconceptions About ARCA-SWISS Monoballs
One: “My Monoball gets stiffer when I move it to the vertical position.” It’s supposed to! The ball itself is aspherical. It is designed to offer a progressive increase in resistance as you move it to the vertical position.
Two: “The numbers on the multifunction knob don’t line up anymore.” They never did! The numbered reference ring is a user-controlled function. It runs on a film of heavy grease and is designed to be difficult (but not impossible) to turn by hand to reduce the likelihood of inadvertent rotation. The operator may position it anywhere for the purpose of referencing different friction settings.
The most common way to use it is to position the zero at your minimum friction point (set by the friction thumb screw) and hence be able to instantly set varying tensions based on needed movements or camera weight. For example, turning the Multifunction Knob until you reach the 2 or 3 might set a desired friction for a given movement with a 35mm camera and light lens, while turning the knob to 4 or 5 would give you the desired friction for using a heavier medium-format camera.
In other words, if the knob is tightened and you want to slightly reposition the camera, you only want to loosen the knob enough to allow yourself to make that adjustment. If you loosen it too much and lose your grip, the camera can flop down and strike the side of the Monoball housing causing damage to the camera, lens, and/or the Monoball. So by noting that you have a 35mm-camera with a heavy lens on it, and knowing from previous experience that if you loosen the knob to “3” you will feel the desired resistance, you can safely reposition the camera where you want it.
It’s up to you – the reference ring can be positioned wherever you want.
Three: “I never use the friction thumb screw because it makes my Monoball lock up.” In fact, the original B1 was not equipped with the “captive” feature and some people recommended removing the screw and putting it back with an O-ring washer under it. They believed this would keep it from locking up. Wrong! That did nothing but remove the friction screw from its usable range.
Multifunction Knobs “lock-up” because users become rushed, don’t understand, or aren’t comfortable with how the knob and friction thumb screw work. They try to instantly loosen the ball all the way and forget that they have set a minimum friction point. In their haste, they put all their strength into loosening the Multifunction Knob and simply jam the internal mechanism against the tip of the tension screw. Note: Remember that this applies only to the black tension screws. The silver/gray screws indicate a later version that has a different internal design that shouldn’t lock up under any circumstances.
JCL
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