On Tuesday, 26 February 2019 12:15:51 UTC, Robin wrote:
On 26/02/2019 11:46, whisky-dave wrote:
On Monday, 25 February 2019 20:32:14 UTC, T i m wrote:
Hi all,

We have one of those 3 lamp ceiling spotlights that currently has 3 x
50W halogen lamps in it that I would like to change to LED and one of
the dimmer switches that was previously recommended in another thread.

However, I've never used / had a GU10 fitting or even changed a lamp
(thst I remember) and certainly don't therefore have any feel for just
how bright they may be (ITRW) in comparison with the supposed
watt-equavalent halogen.

It;s difficult to judge such things I have a 6 way in the front room and a 3 way in the spare room. The cool ones do have a cold feel about the light and the warm white doesn't seem as warm as dimmed halogen.

My warm white LED GU10s do seem brighter but only when you look at them, when reflecting off walls and anything else they sem dimmer than the 35W I replaced them with.

My last lot came from screwfix standard dimmable in a pack of 5 or 6 LED GU10 warm white, they are OK I still prefer halogen for light quality, while the LEDs seem brighter they just seem monochomatic in light output, it's difficult to describe but knowing the spectral response of the human eye and that of sunlight I've been used to most of my life and for humans 1000s of years so it sort of works well. LED lights that don't produce that same spectral response and for me it noticable.

The LEDs GU10s seem to be a narrow angle in general compared to halogen verions so you get more of a spotlike effect which again can alter your perception of brightness.

That's the buyer's choice. I have 120 degree dimmable led GU10s.
I've seen 110 which seemd very dim in B&Q and the nore common 36.

can you show me these choices they seem few and far between, and halegon have always seeme to be much greater than 120 deg.

I'd like to see 270 or 360 like the old tungsten .

But it;s true than beam angle is anothe rthing to consider when buying GU10..


My first set of dimmable LEDs GU10 dail from B&Q didnlt fit in my frontroom holders, becaus ethey had cooling fins that were a few mm high the GU10 pins could engage and click into the holder so were useless, but luckily they fited in the kitchen GU10 holders so weren't wasted.

So my advice would be to try a few out rather than expect to get the best via reviews or even personal recomendations, like marmite on toast I like very lightly toasted bread and a very thin coating of marmite, anyhting more and I hate the taste.
Of course someone my have more experience and find some makes or type of bulbs to be crap for whatever reason, but if you really care about the light it's worth going around byung a few bulbs as they will get better in the future , so if you find a bulb you're not keen on, then keep it as an emergency spare is what I do.

And another fact is we have a couple of light meters and depending whatv tyoe of light your measuring you have to set it to flourescant daylight or tungsten so it's more than just lumens or lux to worry about as represented by a level of brightness.

They also seem to range in price considerably and I'm not sure how
likely that would reflect quality / reliability etc?

So, could anyone personally recommend a 'good' (VFM / reliability /
light level and dimmable) LED GU10 lamp please?

I think we would want 'warm white' (it's in a bedroom) but ideally at
least as much light as seen from a (well 3x) 50W halogen lamp please
(if that's possible etc).

Cheers, T i m



--
Robin
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