Buy The Dorr Binoculars In London.

The first moment that a Dorr binoculars should pay attention to when buying a flash is the leading number. For those who forgot what this parameter is recall its brief definition. The leading number Dorr binoculars is the product of the working aperture the one with which the survey is performed by the distance to the object in meters. In many flashes, due to the design of the reflector, the leading number changes depending on the focal length of the lens. 

When working with a wide angle lens, the leading number decreases, since the light flux is distributed over a larger area, and when working with Dorr binoculars lens it increases, since the light flux is distributed over a smaller area. That knowing the leading number, it is easy to determine the maximum distance that the flash.

Most flash functions are standard changing the beam width depending on the lens focus change in the automatic mode in the range flash head can be tilted and rotated manual change of pulse power from built in reflective map diffuser for lenses of power saving function. The functions of controlling several slave flash units are different. If the main flash (master) is connected it can control up to three groups of flashes, and the flashes in each group, if necessary, are set differently.