Table of Contents
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Table of Contents
Summary of Contents for squarespace LF-1
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Page 2: Table Of Contents
Table of Contents Some abbreviations used in this guide:..........................2 Specifications:..................................3 Exposure durations and guide number at ISO 1,000 (feet):....................3 Exterior Hardware:................................4 Interface Layout:..................................5 Power:.....................................5 Strobe control:.................................6 Continuous light control:..............................6 Modeling light trigger:..............................6 Strobe trigger:..................................6 Optical trigger:................................6 Parameter Modification Limitations:..........................7 Parameter example:.................................8 Overload Safety Mechanisms:.............................9 Fruit drop example:................................10 Setup for fruit drop example:............................11... -
Page 3: Specifications
Specifications: Parameter: Minimum typical Maximum Units conditions Color temp. 4000 Input voltage Input current Do not exceed ability of connected power supply Ambient Temperature Using included wall outlet adapter 3.5mm trigger lag for µS flash 3.5mm trigger lag for µS modeling light Optical trigger lag for flash... -
Page 4: Exterior Hardware
Exter ior Har dware:... -
Page 5: Interface Layout
Inter face Layout: Power: The power button acts as a toggle switch. Press it to cycle power on and off. If the input voltage goes too low the flash will turn itself off to prevent damage to the power supply or internal circuitry. Encoder : Use this encoder knob to adjust flash parameters. -
Page 6: Strobe Control
Strobe control: • Pulse duration: This is the amount of time the LED’s will be turned on during each flash, and is measured in microseconds (µS, millionths of a second). The adjustable range is from 0.5µS to 3000µS. When using durations of 50µS or shorter, it is safe to run the LED’s at a higher power. -
Page 7: Parameter Modification Limitations
Parameter Modification Limitations: Each parameter has independant upper and lower limits, but there are also limitations on various combinations of parameters. Here are the factors that limit some combinations: • How much electrical power is available to the flash • How much energy is stored in the flash capacitors •... -
Page 8: Parameter Example
Parameter example: Parameter setting Flash duration 0.5µS Flash interval 1.5mS Number of flashes Suppressed leading strobes Modeling light brightness Light on after number of pulses Light off after number of pulses Available current Flash delay In this next image, the yellow trace shows light output (y-axiz) vs time (x-axis). The tall spikes are strobe outputs, and the slightly raised section is the continuous light output. -
Page 9: Overload Safety Mechanisms
Over load Safety Mechanisms: Temperature protection: The main power section of the flash includes a temperature sensor. When the temperature gets up to 40°C (104°F), the fan will turn on to a low power. As the temperature rises, so will the fan power. Once the temperature reaches 60°C (140°F), the fan will be at max power. -
Page 10: Fruit Drop Example
Fr uit drop example:... -
Page 11: Setup For Fruit Drop Example
Setup for fruit drop example: Flash Parameters: Parameter setting Flash duration 50µS Flash interval 100mS Number of flashes Suppressed leading strobes Modeling light brightness Light on after number of pulses Light off after number of pulses Available current Flash delay 147mS Modeling light off duration 500mS... -
Page 12: Gunshot Example
Gunshot example: This photo was taken with a Ruger Super Redhawk Alaskan 44 magnum revolver with a 2.5 inch barrel. The bullet in this photo is a hollow point 44 special. You can see the shadow from the flash in the cup of the hollow point. The trail behind the bullet is achieved using the modeling light triggering functions of the flash. -
Page 13: Setup For Gunshot Example
Setup for gunshot example: Flash Parameters: Parameter setting Flash duration 5µS Flash interval 1.5mS Number of flashes Suppressed leading strobes Modeling light brightness Light on after number of pulses Light off after number of pulses Available current Flash delay Modeling light off duration 500mS Camera equipment: body: Nikon D3200...
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