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Led Lighting

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John1's Avatar
United States
56855 Posts
 Posted 07/05/2010  11:37 am Show Profile   Bookmark this topic Add John1 to your friends list Get a Link to this Message Number of Subscribers
Need some info on LED light bulb that would be equivalent to a 100 watt incandescent bulb. It needs to have the same base as a standard bulb.I have been looking for one but don't know about what wattage in an LED is equal to the wattage in a 100 watt incandescent. Also the "k" rating,is 5500 o.k. How many LED's should be in the bulb?,30 or should it have more? I have noticed that the price can vary a lot,what should I expect to pay? Any help on where to look for one at a good price would be appreciated. This bulb would be used for looking at coins not photography. Thanks for your help,
John1
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SsuperDdave's Avatar
United States
23522 Posts
 Posted 07/05/2010  12:56 pm  Show Profile   Bookmark this reply Add SsuperDdave to your friends list Get a Link to this Reply
I'm thinking an LED solution of equivalent lumens to a 100w incandescent (~1700) is gonna run you some serious money. Check out the EarthLED EvoLux - it's claimed to match 100w incandescent for about $50. That's less than half what I originally expected you'd have to pay.

The solution I use for just looking at coins in hand is a small gooseneck lamp with a 60w-equivalent compact fluorescent using a Daylight bulb (5500k is just about right). It provides enough light, with very little of the annoying incandescent heat. And, at roughly $2 each bought on sale, you can go through a whole bunch of them before reaching the cost of a single LED.

I've been using the same single bulb for this purpose since 2006.
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Stunet's Avatar
United States
211 Posts
 Posted 07/05/2010  1:47 pm  Show Profile   Bookmark this reply Add Stunet to your friends list Get a Link to this Reply
I look at my coins under a 18 watt full spectrum Ott Lite. These lights are specifically designed for hobbyists. Their retail price is high, but they show up discounted on the web quite often. I paid something like $40 for my Ott Lite floor lamp. Incidentally, I do not use this light for photography, though I suppose I could.

LED lights are fantastic. For professional photographers they are a god-send. They are light, dependable, low voltage and allow multiple adjustment. However, they are really expensive and coming down in price every year.

A 100w incandescent bulb puts out 1800 lumens. You are going to have to spend between $250 and $800 to get 1800 color balanced lumens out of LEDs.
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