Method, transmission unit, system and computer program for wireless communication between a camera and at least one remote flash device
A flash device and wireless transmission technology, applied in the field of communication, can solve problems such as the flash device has not yet been developed, it is difficult to determine the TTL mode or manual mode, and the cost of the studio is increased.
Inactive Publication Date: 2016-06-08
PROFOTO
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Problems solved by technology
For the amateur photographer who owns a flash unit, it can be very frustrating that the flash unit can no longer be used with a particular camera rig due to the limitations mentioned above
For a professional photographer, or a commercial studio environment working with many different photographers who have different preferences in their choice of camera gear, this can be a very restrictive constraint
To overcome this limitation, professional studios usually have to be equipped with numerous brands of flash units to coordinate the needs of any professional photographer, thus greatly increasing the cost of the studio
[0009] Another problem when using flash lighting systems or similar lighting systems currently available on the market is that in some situations it can be difficult to determine whether TTL mode or manual mode should be used
No such flash device has yet been developed
Method used
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[0028] Throughout this document, the term flash refers either to a flash of light itself or to an electronic flash unit that emits light.
[0029] Controls for through-the-lens (TTL) flash photography first appeared in analog form around 1980, and have since been converted to digital TTL, which is more accurate and allows for more advanced features. The main feature of digital TTL is the firing of one or more small flashes called pre-flashes prior to the actual exposure and firing of the main flash. The light returning through the lens is measured and this value is used to calculate the amount of light needed for the actual exposure. Multiple pre-flashes can be used to increase flash output. Canon calls this technology "E-TTL" and has recently improved the system with a new generation of "E-TTL II". Nikon's first form of digital TTL, known as "D-TTL", was originally introduced, and the better "i-TTL" system has since been popularized. From the user's perspective, the two di...
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The present invention generally relates to the field of communication between electronic devices used for photography. In particular, the invention relates to a method, transmission unit, system and computer program for wireless communication between a camera and at least one remote flash device, such as photoflash units and related equipment. More in particular, the invention provides a way of controlling a plurality of flash devices from an intermediate radio transmission unit mountable on the camera, andutilized a delay a sequence flash control sequence so as to synchronize the function of the camera and the remote flash devices during image acquisition. Further the invention provides a way of controlling in the photoflash unitssettings for the main flash, wherein the setting are the last settings determined by the camera when the intermediate radio transmission unit was in a TTL-mode.
Description
technical field [0001] The present invention generally relates to the field of communication between electronic devices for photography. In particular, the present invention relates to a method, a sending unit, a system and a computer program for wireless communication between a camera and at least one remote flash device, such as a flash unit and related equipment. Background technique [0002] Various types of flash units, also known as flash units, strobe lighting units, etc., are commonly used in photography to produce flashes of artificial light to aid in illuminating scenes that would otherwise be perceived to a viewer of a captured image of the scene as Underexposed, ie, too dark. Other uses for flashes are to capture fast-moving subjects or to alter the quality of light. Most current flash lighting devices are electronic and have progressed to the status of artificial light-emitting diode (LED) flash devices through xenon-based flash devices. Historically, flashes...
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IPC IPC(8): G03B15/05G03B15/03
CPCG03B15/05G03B2206/00G03B2215/0557H04N23/66H04N23/74H04N5/04
Inventor安东·法尔克
OwnerPROFOTO