Last Updated 4 hours ago
Overview
The Wyeth 1 kW is a shallow, single-lamp tungsten softlight. At 3 m its silver reflector produces a field about 4.0 m wide and 3.3 m high. That wider-than-tall spread suits a seated interview or a pair of presenters when there is limited room above the set.
Key specifications
| Specification | Details |
|---|---|
| Model | 3200, one-lamp Wyeth |
| Lamp and socket | One 118 mm, 1,000 W double-ended R7s lamp |
| 120 V replacement | FCM, also listed as P2/28 |
| 230 V replacement | P2/20 |
| Published field | 67° horizontal × 57° vertical with silver reflector |
| Versions | Manual or pole-operated yoke |
| Front control | Two colour-frame positions, front and rear of the eggcrate |
Look up replacement lamp codes for this fixture.
Strengths and limitations
- The shallow fixture fits a low studio grid, and the relamping compartment opens with the front accessories installed.
- Its broad face can show in glasses, glossy walls or a television in shot. Check the reflection from the taking lens when choosing the height.
Practical uses
For a two-shot, aim the long axis of the field across both marks. The silver-reflector chart gives 661 lux at 3 m and 165 lux at 6 m. If the background needs to stay dark, bring the head closer and cut the far side of the spread.
Output and photometrics
The manufacturer measured centre illuminance using the 230 V P2/20 lamp and silver reflector. The field widths and heights likewise apply to that configuration.
| Configuration | Distance | Lux | Foot-candles |
|---|---|---|---|
| P2/20 · 230 V · silver reflector | 3 m | 661 | 61.4 |
| P2/20 · 230 V · silver reflector | 6 m | 165 | 15.3 |
| P2/20 · 230 V · silver reflector | 9 m | 73 | 6.8 |
| P2/20 · 230 V · silver reflector | 12 m | 41 | 3.8 |
Manufacturer photometric table and test conditions.
Photometric & exposure calculator
Estimate centre-beam illumination and the corresponding camera aperture from this fixture’s published measurements.
Estimated output
Select a configuration to calculate.
Manufacturer readings are for the stated optic, colour setting and full output, measured at the beam centre. Values between measured distances are interpolated. Point-source values outside those distances are approximate inverse-square estimates; large sources cannot be reliably extrapolated and are limited to their measured range. Exposure uses frame rate, shutter angle, ISO and the selected incident-meter calibration. Only the optics and diffusion explicitly listed in the measurement are included; additional modifiers, bounce, beam edges, ambient light, ND filters and camera exposure-index differences are not accounted for. Confirm critical exposures on set with a meter. Photometric source
Power and controls
The 120 V spare is FCM and the 230 V spare is P2/20. Both are 118 mm R7s lamps. Store voltage and lamp code together on the case so the correct globe goes back into the head.
Optics and mounting
The head accepts an eggcrate and can carry a frame on either side of it. A silver reflecting surface was used for the photometric test. Identify the installed reflector before using those readings to compare heads.
Comparable fixture
For a contemporary De Sisti LED soft source, compare the De Sisti SoftLED 1.
Field coverage and further reading
B&H identifies the 3200.220 hanging, manually operated Wyeth 1K.
Rental and used-fixture checks
Look for Model 3200, check both ends of the R7s holder and make sure the front access panel closes without pressure on the lamp. On a pole-operated unit, test pan and tilt through the range you plan to use.