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Old 03-11-12, 03:09 AM   #32
nexsuperne
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Join Date: Feb 2012
Location: 30 miles east of London, UK
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I have replaced all of my gu10 50 watt halogen bulbs with 60smd 4.5 watt led equivalents. These are 120 degree angle, so a much wider pattern than a 38 degree halogen. Regarding colour temp. 3000k is a yellower light, which appears brighter when reading as more of the light is the same colour as the paper, so more gets reflected and is perceived as being brighter. The lumen levels are 320 on the 3000k but 350 on the 4500k, yet because of the yellow/white paper,the 3000k is better to read with. Your eyes will adjust to the 4500k light, but after years of optical conditioning from incadescents, it takes some getting used to. I do find the 4500k to give a crisper sharper light. Just for reference, a gu10 50 watt halogen puts out 80% heat and 300 lumen of light.

Any ebay seller that fails to mention how many lumen and just keeps pushing the watts quota is selling an inferior product.

I am currently buying the 60smd 4.5w 320 lumen bulbs for £4 a bulb. You have to buy 12 at a time. This is much cheaper than my local electrical wholesaler, and a much better product.
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