QFT5D INSTRUCTIONS 10/5/06 10:27 AM Page 14

8.2.2 Manual mode Qflash Compensation

This procedure will calibrate Qflash to an incident light flash meter you use and trust. Note that only incident light measure- ments are reliable for manual exposure settings.

1.Place the Qflash 10 feet from the incident light flash meter facing Qflash.

2.The area surrounding the meter and flash should be similar to the shooting environment you usually work in. For example, in a large hall, there will be little light bouncing from walls and ceilings. In a small room, the light meter reading will be increased by whatever bounce occurs from nearby surfaces. These factors will affect calibration and should be considered.

3 Turn Qflash on and change the manual power setting to 1/8.

4.Set the film speed on the flash and the flash meter to the same value.

5.Change the F number on the flash until the distance shown in the display is 10 feet.

6.Fire Qflash. Push the the Option ■ button, until the compensation display appears.

7.Use the Set G and Up J/Down L buttons to adjust compensation until the f/number in the display matches the f the f/number on the meter. The light output can be increased or decreased by as much as 2 stops in 1/3 steps.

8.2.3 Auto mode Qflash Compensation

This procedure will calibrate Qflash to a reflected light flash meter you use and trust. Note that only reflected

light measurements are reliable for auto exposure settings.

This is because auto mode flash-

es read reflected light from the scene and subject. In order to

compare those readings to

a meter, the meter must also be

reading the same reflected light. The reflected light is affected by

the subject and background, and an incident light reading will not typically provide the same reading (unless the subject is an 18% gray card).

1.Place the Qflash 10 feet from a blank wall. The wall should be larger than the metering area of the meter, and preferably a wall of continuous tone (blank wall).

2.Place flash meter next to Qflash, also facing the blank wall. Be sure to set the flash meter for a reflected reading.

3.Turn Qflash on and change the f/ number to F8.0

4.Set the film speed on the flash and the flash meter to the same value.

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Quantum Instruments QFT5d-R, QFX5d-R operating instructions Manual mode Qflash Compensation, Auto mode Qflash Compensation
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QFX5d-R, QFT5d-R specifications

Quantum Instruments has consistently been at the forefront of lighting technology, and their latest offerings, the QFT5d-R and QFX5d-R, exemplify this commitment to innovation and performance. These robust lighting solutions are designed for photographers, videographers, and content creators who demand reliability and versatility in their tools.

The QFT5d-R is a high-performance fixture that utilizes advanced LED technology to provide exceptional brightness and color accuracy. One of its main features is its ability to deliver consistent illumination while maintaining a low power consumption profile, making it an eco-friendly option for professionals. The fixture has a color temperature range that can be adjusted from 3200K to 5600K, allowing users to easily match ambient lighting conditions and create the desired mood for their shoots.

Another standout characteristic of the QFT5d-R is its DMX compatibility. This feature allows for seamless integration into larger lighting setups, enabling multi-device control for complex productions. The fixture is designed with a durable build, ensuring it can withstand the rigors of on-location shoots and studio environments alike.

Equally impressive is the QFX5d-R, which boasts similar capabilities with added enhancements geared towards providing ultimate flexibility. It features a lightweight design, making it easier for creators to transport and set up in various shooting environments. The QFX5d-R incorporates wireless connectivity options, allowing users to control the unit remotely via mobile applications, which is particularly useful for solo shooters or when equipment is mounted in hard-to-reach places.

Both the QFT5d-R and QFX5d-R are equipped with pinch-free barn doors and flexible mounting options, offering users greater control over the lighting spread and direction. Additionally, these fixtures come with built-in effects and presets that allow for creative lighting patterns, making them suitable for dynamic video work or artistic photography.

The versatility and technology embedded in the QFT5d-R and QFX5d-R align them perfectly with the needs of modern creators. These innovative tools represent a significant leap in lighting technology, ensuring that professional-grade results can be achieved with ease and efficiency in a myriad of shooting conditions. Quantum Instruments continues to pave the way in the industry, and these models are testaments to their dedication to quality and advancement.
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