Last Updated 4 hours ago
Overview
The InBetweenie is a compact tungsten Fresnel with a two-inch lens, front and rear focus knobs, and a G5.3 bi-pin socket. Its 100 W and 200 W globes both have published output tables. The 200 W globe gives 53 fc in spot at 10 ft, enough to pick out a hand, prop or eye line without opening up the whole background.
Key specifications
| Specification | Details |
|---|---|
| Fixture | Type 3101 InBetweenie Solarspot |
| Tested lamp options | 100 W and 200 W tungsten-halogen |
| Lamp geometry | G5.3 miniature bi-pin, 32 mm light-centre length |
| Lens and field | 2 in borosilicate Fresnel, 22° to 57° field |
| Focus control | Front and rear knobs |
| Yoke and mount | Cast aluminium yoke for a ⅝ in stud |
| Weight and cable | 6 lb with attached 25 ft cable and inline switch |
| Scrim diameter | 3 in |
Replacement lamps
| Lamp code | Power | Voltage | Rated colour | Rated life |
|---|---|---|---|---|
| FVL | 200 W | 120 V | 3,200 K | 200 h |
| FVM | 100 W | 120 V | 3,200 K | 200 h |
Look up replacement lamp codes for this fixture.
Strengths and limitations
- The 100 W FVM gives a lower level at rated voltage while retaining a nominal 3,200 K. Front and rear knobs provide two ways to reach focus from a tight position.
- In full flood at 15 ft, the published centre readings fall to 10.2 fc with the FVL and 5.3 fc with the FVM. It is better suited to a local accent than to a room-wide fill.
Practical uses
At 10 ft with the FVL globe, the field opens from 2.6 ft in spot to 7.8 ft in flood. For a small edge on a face, set the spread first. If 53 fc in spot is too much, the FVM reads 28 fc at the same distance in spot, with a slightly smaller 2.3 ft field.
Output and photometrics
Mole publishes separate full-flood and spot readings for the FVL and FVM at 5, 10 and 15 ft. The table converts those centre readings to lux. Its beam diameters use approximately half the centre intensity as the field edge.
| Configuration | Distance | Lux | Foot-candles |
|---|---|---|---|
| FVL · 200 W · flood | 5 ft / 1.524 m | 990.3 | 92 |
| FVL · 200 W · flood | 10 ft / 3.048 m | 247.6 | 23 |
| FVL · 200 W · flood | 15 ft / 4.572 m | 109.8 | 10.2 |
| FVL · 200 W · spot | 5 ft / 1.524 m | 2,281.9 | 212 |
| FVL · 200 W · spot | 10 ft / 3.048 m | 570.5 | 53 |
| FVL · 200 W · spot | 15 ft / 4.572 m | 258.3 | 24 |
| FVM · 100 W · flood | 5 ft / 1.524 m | 516.7 | 48 |
| FVM · 100 W · flood | 10 ft / 3.048 m | 129.2 | 12 |
| FVM · 100 W · flood | 15 ft / 4.572 m | 57 | 5.3 |
| FVM · 100 W · spot | 5 ft / 1.524 m | 1,205.6 | 112 |
| FVM · 100 W · spot | 10 ft / 3.048 m | 301.4 | 28 |
| FVM · 100 W · spot | 15 ft / 4.572 m | 129.2 | 12 |
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 inline switch supplies the installed lamp. The two 120 V globes in the output table are the FVL and FVM. For a 230 V head, verify the installed globe against the nameplate. The archival Mole sheet and OSRAM disagree on the GLF rating. OSRAM specifies its GLF 54460 at 235 W, 230 V.
Optics and mounting
The 2904 four-leaf barn doors, 2903 diffuser frame and 3 in Mole scrims fit the front. Full singles and doubles are 2909S and 2909D. The 29094 snoot set provides more spill control than the doors around a small accent.
Comparable fixture
For the 300 W head with 5⅛ in scrims, see the Mole-Richardson Betweenie 300W (Type 3131).
Field coverage and further reading
Rental and used-fixture checks
Identify the 3101 on the head. The 300 W Betweenie is Type 3131 and takes a different lamp and larger scrims. On the 3101, check both focus knobs, the yoke lock and the captive cord. Record which globe is installed before using the calculator.