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40w T12 vs 18w LED 40w Colour 33 T12 fluorescent vs 18w 840 T8 LED. Sorry to report that the LED beats the T12 for brightness and CRI. T12 probably wins in terms of lamp life but since that is a Sylvania T12 probably not!

40w T12 vs 18w LED

40w Colour 33 T12 fluorescent vs 18w 840 T8 LED.

Sorry to report that the LED beats the T12 for brightness and CRI.

T12 probably wins in terms of lamp life but since that is a Sylvania T12 probably not!

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Album name:FrontSideBus / Tests & Experiements
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Date added:31 Dec, 2016
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Comment 1 to 6 of 6
Page: 1

Danny   [31 Dec, 2016 at 05:20 PM]
Stick 840 in
FrontSideBus   [31 Dec, 2016 at 05:28 PM]
Don't have any 4ft T12's in 840 but I did try T8. (See next pic for 840 TCool
Danny   [31 Dec, 2016 at 05:38 PM]
840 be much better led tube only outshines it cos its directional. A reflector tube would piss on it
eclipsislamps   [31 Dec, 2016 at 05:43 PM]
The halophosphate t12 is the only fluorescent that's really more inefficient than current leds, but even so its only a small amount, hence this comparison doesn't surprise me one bit. however yes, I fully expect an 840 t8 to outshine this even though it isnt directional.
Andy   [01 Jan, 2017 at 01:16 PM]
I'd expect the LED tube to outshine the halo tube but a decent Philips 840 T12 would beat the LED and most certainly out live it.
FrontSideBus   [01 Jan, 2017 at 08:38 PM]
Was about the same as a T8 840 tbh. See next pic.

Comment 1 to 6 of 6
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