When it is used with the standard lens, macrophotography with a magnification from 1 X to 3X can be performed.
A semi-automatic aperture mechanism with which automatically closes the diaphragm makes the Bellows FL almost as easy to use as a fully automatic lens.
Attaching and detaching the Bellows are the same procedure as the how to operate the lens.
The Bellows FL is a three track bellows with both front and rear adjustment as well as overall adjustment. Minute adjustments can be made, and the advantage is : it is seldom necessary to move the tripod.
The Slide Duplicator (see illustration bottom right hand side) can be attached to the tip of the Bellows. Moreover, since the strut for preventing blur is built in, it is convenient to perform shooting with the Bellows attached to the copy stand.
When using the Bellows, it is desirable to use the macro lens which is especially designed for close focusing, however, since the wide angle and the standard FD lenses have been far improved over conventional lenses, when the FD lens is used, very satisfactory results can be expected, prefebly stopped the lens down to smaller aperture value will help a lot.
FD 50mm lens's magnification ratios can be read directly from the Bellows scale engraved on to it.
In addition to the FL, a simplified model, the Bellows M, is also available. It is a single track manual bellows with front extension.
Macrophoto Coupler FL
General photographic lenses are designed for maximum performance at normal photographic distances and, as a rule, the closer to the subject, the more degraded the image. This tendency is remarkable particularly in life-size photography or in higher magnifications. On the other hand, when the lens is positioned at a close distance from the subject, photographic conditions, including illumination, will become worse.
In order to minimize these defects, the lens can be reversed. The accessory for reversing the lens is called the Macrophoto Coupler.
There are two types of Macrophoto Couplers: one' is for attaching to the screw type extension tube and the other for attaching to the bayonet mount. The Macrophoto Coupler for the tube can be attached directly to the screw type Extension Tube, however, since it is not equipped with the focusing device, focusing must be done by the focusing ring of the lens. But when the Bellows is used in combination, focusing can be performed freely with the Bellows.
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Good Resources preprared by Christian Rollinger:
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The number of the Macrophoto Coupler denotes the front screw diameter (Filter Screw) of the lens. There are four sizes: 40mm, 48mm, 55mm, and 58mm. The Macrophoto Coupler FL 55 has a helicoid mount and can protrude 13mm. Focusing is possible without a Bellows. It can be attached directly to the Extension Tube M, the Bellows FL and the camera body. Besides, when attaching it only to the standard lens, it is capable of magnifications of 1.3X to 1.5X and is indeed very useful. The 55mm Macrophoto Coupler is designed for use with the standard FD 50mm F 1.4 and 1.8 lenses.
