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CowboyStudio Set of Two 105 Watt, 5500 K Fluorescent Daylight Balanced Light Bulb for Photography and Video Lighting
|Price:||$36.90 & FREE Shipping. Details|
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- Two (2) 105 watt bulbs
- Incandescent equivalent: 400 watts
- 9" Tall x 2 3/4" Wide
- Average life: 8,000 hours
- Color temperature: 5000 K
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5000k daylight compact fluorescent standard spiral bulbs are an excellent choice for digital camera photography. They generate a close match to natural daylight and a crisper view of the items being illuminated.
Style: 2 x 105W/5000
Top Customer Reviews
Serious photographers and videographers may want to read all this info about multiple CFLs tested. Others can skim it for the CowboyStudio 105 watt specific evaluation.
I have been testing CFLs for a couple important projects that need continuous light. The tests include measuring light falling on the subject (measured in LUX with a Lux meter and confirmed with a Sekonic Digital Incident Lightmeter), color temp/quality, and actual power consumption. Since a lot has gone into this, and the results are "interesting" especially in terms of this specific CFL, I decided to share my opinions. Apologies for another long, but fact filled, review :-)
The tests were all conducted with bulb warm-up times > 30 minutes, professional digital light metering, test RAW still images of a Kodak Q-60 target, and continuous monitoring of power factors. I also tested 3 100 W incandescent bulbs to see how efficient these CFLs really are.
Against incandescent lamps, including one with an encapsulated Halogen source, these CFLs generate 5 to 6 times more illumination per watt consumed! For real! This means having lots of light to work with with far less heat, power consumption and fewer blown circuit breakers on location!
The good news is that CFLs come out very serviceable and and efficient . . . but this "105 watt" CowboyStudio CFL is at the back of the pack. Way back.
Amazon sourced Full Spectrum/Photo/Video CFLs tested included:
CowboyStudio "105w": ...Read more ›
Using a Da-Lite projector screen as the background and a standard desk lamp as the housing for the light source (I don't have a studio lighting setup yet), I set my Canon T2i to raw mode. Except for auto exposure, the camera does not do any auto processing including ISO. The photos are then imported into Photoshop without any kind of enhancement. The center point of the image is sampled and Photoshop can tell me the color composition of that sample.
For comparison purposes, I also measured two other light sources: Canon 430EX flash light and Feit 18W(75W equivalent) household CFL with "Daylight" color temperature. The results are color charted in Excel and uploaded to this product page above. They are surprising.
To be "full spectrum" or white (either terminology is not quite precise), the strengths of the three prime colors need to be equal. The strength is number between 0 and 255. (0,0,0) is pure black and (255,255,255) is pure white. Human eyes are usually quite tolerant of difference in the single digit range. Most people, including me, would expect the $300 Canon speed light to be a very color neutral light source. But no. It actually has a visible blue tint. It is only marginally better than the $1 Feit "Daylight" household CFL. I am not suggesting that a flash light and a CFL are interchangeable, it is nevertheless disappointing that the Canon can't get a tight color balance in that expensive device. The best one, by a significant margin, is the Cowboystudio photo CFL.Read more ›
The light quality is quite close to 5500k, but as with all flourescents they have a green spike that causes them to show up as just a little green when shooting on the daylight preset of a camera. I get whiter whites with the florescent preset.
Using the rule of thumb that florescent lights use about a fifth the power of tungsten, this would be about the equivalent of a 100 watt bulb. Not bad, but don't count on more light than that.
Most Recent Customer Reviews
I use these lights along with 45 watt bulbs. They give me enough light that I need to take pictures (shelter dogs). Read morePublished 15 days ago by Steve Komure
I am getting qualty lighting that although not as pure white as tunsten, requires less precaution that tungsten bulbs, longer life and no fear of finger oil and blow-ups. Read morePublished 1 month ago by killjoy714
QUALITY = SHAMEFUL - 1 blew within an hour, another in a day, a 3rd was sparcing and arc and I had to unscrew it worried about a fire I will not use any of these sub-standard... Read morePublished 1 month ago by WindEnergy7
What a great value! I upgraded my lighting with these and can't imagine dropping wattage again. They get hot but not super-hot. Read morePublished 2 months ago by Kr4k3n
I ordered these bulbs in 2011- I do photo shoots regularly. They are all still working 4 years later! Read morePublished 2 months ago by Cheryl
These are garbage. Returned the first set. and one of the lights in the replacement didn't even last an hour. Don't feel like looking for another box to return these AGAIN. Read morePublished 2 months ago by Jeffery S Oakes