Zoom focus system | for deep reflective softbox

Jinbei Zoom Focus System for Deep Reflective Softboxes & Deep Focus Umbrella

The Jinbei Zoom Focus System for Deep Reflective Softboxes & Deep Focus Umbrella allows you to use the softbox or umbrella much more flexibly than before. With the help of the focus rod you can continuously move your light source inside the light modifier by up to 40 cm. The light cone reflected inside the softbox/umbrella is thus reflected at different angles, illuminating your subject with even, focused light that creates rather harder shadows. However, the hardness can be varied by moving the light source.

A major advantage of this design is that the light does not show the point light source as in a typical softbox setup, but is completely evenly reflected. This works especially well with parabolic deep softboxes, which have a greater depth at the same diameter than standard softboxes.

You can vary the hardness of the light, meaning the hardness of the shadows on your subject, by moving the light source. Push your flash further into the softbox and the beam angle of the reflected light becomes more focused and narrower overall, making the shadows harder. Push the flash further out of the softbox, and the beam angle of the light increases, making the shadows softer.

Note: The pictured light modifiers, flashes, and stands are not included in the delivery.

You can easily tighten the focus rod securely with a screw lock. One end of the rod has the Bowens flash head speed ring, where the light source, e.g., a studio flash or an LED continuous light, can be easily mounted via the Bowens S-type bayonet. The sliding mount of the focus rod has a reflective softbox adapter to which the softbox or umbrella is attached, completing the illuminated, reflective inner surface of the light modifier. The mount of the focus rod also features a tilt function, allowing you to direct the softbox/umbrella further up or down as desired.

At the other end of the focus rod there is a hook to hang the included sand counterweight. This prevents your light modifier along with the light source from becoming unbalanced when you slide the light source out of the softbox/umbrella.

The scale printed on the focus rod helps you reproduce the lighting settings without deviations.

The zoom focus system includes a spigot adapter to mount it on all common light stands.

Notes:
Ensure a stable setup and use a sturdy light stand, preferably one with wheels, if you want to move the light source. The construction is less stable than a setup where the light source is on the light stand and the light modifier is directly on the light source, as here the light source floats freely.
Only insert the light source into the zoom focus system when you actually use it, as otherwise the flash head mount could deform over time due to the weight.
This setup is best suited for large rooms, as otherwise disturbing reflections on walls may occur.