It's not about the watts!
With the announcement of the new Honey Badger studio flash from Interfit Photographic I've seen some comments about the brightness of the modeling light in these flash units. I think the confusion comes from using the term watts to describe the lights. Watts is a measurement of energy used and doesn't tell us anything about the brightness of the light. Please note that this discussion is about the modeling lamps, not about the flash power (which is even more confusing, but watt-seconds is a topic for a different post). I picked the Einstein for comparison because it uses a typical 250-watt modeling lamp and I had one available when I decided to write this. You can substitute just about any other light that uses the same 250-watt bulbs. Paul C. Buff has also recently released a new Alien Bee lamp head that uses an LED modeling lamp that has the same advantages as the Honey Badger.
Mr. Heat Miser
In the past, studio strobes have used tungsten modeling lamps that could range from 25 watts to 300 watts or more. Some units use standard household bulbs. Higher end units use quartz halogen lamps. These share some common features. They are on the warm end of the Kelvin scale at around 2500 to 3200 degrees Kelvin (yellowish compared to daylight color). They are also very hot to the touch. I measured the 250-watt quartz modeling lamp on an Einstein flash with a laser thermometer and got a reading of 210 degrees F on the 7" reflector and above the scale on the bulb itself. You don't want to touch the reflector when the bulb is on or for a while after turning it off.
The cool kid on the block
The Honey Badger comes with a 60-watt LED lamp. The key here is LED. LED lights are much more energy efficient. The 60-watt LED puts out as much light, actually a little more, than the 250-watt quartz light.
Here are my comparison measurements of the Honey Badger and the Einstein:
250-watt quartz halogen modeling lamp
Tungsten white balance
Temperature over 200 degrees F (93.3C)
Modeling lamp metered at 39" (1m) = 1/15 second @ f/6.3 at ISO 100
Flash metered at 10-feet (3m) f/20 (640 watt-seconds)
60-watt LED modeling lamp
Daylight white balance
Temperature 86 degrees F (30C)
Modeling lamp metered at 39" (1m) = 1/15 @ F/9 at ISO 100 (brighter than the 250 watt quartz bulb)
Flash metered at 10-feet (3m) f/16 (320 watt-seconds)
Some advantages of the LED technology include the mentioned fact of it being a lot cooler and safer to work with (yes, I have had a small softbox catch on fire from the heat of the modeling lamp). It is easier to change modifiers without getting burned. You don't have to worry about accidentally touching the modeling lamp (even when it is not on) and causing damage to the lamp from the oils on your fingers. You can use the modeling lamp for a longer time period when using modifiers that enclose the light, such as a snoot, barn doors, or grids. You can use the modeling lamp for video without heating up the room. And on the Honey Badger you can turn the flash tube off via a switch on the back to make sure it doesn't accidentally flash when you are doing a video session. The lower overall operating temperature of the unit should help prolong the life of the internal components of the flash.
Get a discount!
If you are interested in purchasing Interfit lighting equipment I urge you to visit your local independently owned camera store who really needs your support. However, if your local dealer cannot get these for you, as an Interfit Creative Pro I can offer you a 10% discount if you order directly from Interfit by using the code CORNICELLO10 (all caps) when you order. And yes, I do get a small commission if you use this code, thanks!