List your McGizmo flashlights

[F89]

I hear you. Sounds nice.

 

[F89]

Found this while browsing pics on candlelight.
I’m unsure of how accurate the measurements are but looks interesting.

 

[archimedes]

I would think CRI of candlelight to be very nearly 100.

 

[greatscoot]

Finally got a McGizmo and quickly became 2!

McGizmo at work!
TriPak Malkoff M361N
Haiku Nichia 4000K 1.5V
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Carry On!

Tough to beat the AA Haiku.

 

[F89]

I would think CRI of candlelight to be very nearly 100.

Apparently it’s about 83.
I can see why when observing things under candlelight.

 

[F89]

Tough to beat the AA Haiku.

The best.

 

[archimedes]

Apparently it’s about 83.
I can see why when observing things under candlelight.

I'm just confused as to why this would be if the light is being primarily generated by Planckian (thermal) radiation ?

I know that a few CPF members have access to fancy (ie expensive) spectrometers. I would be really interested to see scans of firelight (candle, match, etc), as I have often wondered about how those might differ from incandescent ( "hot wire" ) lighting. CRI, spectral differences, R9 and such.

 

[McGizmo]

I'm just confused as to why this would be if the light is being primarily generated by Planckian (thermal) radiation ?

I know that a few CPF members have access to fancy (ie expensive) spectrometers. I would be really interested to see scans of firelight (candle, match, etc), as I have often wondered about how those might differ from incandescent ( "hot wire" ) lighting. CRI, spectral differences, R9 and such.

I just looked it up to confirm my recall but the Planck curve is based on a black body radiation source which a candle or brush fire is not (as I understand it).

 

[F89]

I'm just confused as to why this would be if the light is being primarily generated by Planckian (thermal) radiation ?

I know that a few CPF members have access to fancy (ie expensive) spectrometers. I would be really interested to see scans of firelight (candle, match, etc), as I have often wondered about how those might differ from incandescent ( "hot wire" ) lighting. CRI, spectral differences, R9 and such.

Measuring colour rendering and the parameters used isn’t so straight forward in many cases.

When you think about the spectrum of light produced by a candle it’s very limited so it makes sense that some colours will not be represented so well. Red shouldn’t be much of a problem in this case however blue, for example will be.

 

[archimedes]

Yes I believe that would apply if there is no significant transformation of matter (like the filament in a vacuum lamp), as opposed to the consumption of the candlewick or matchstick, as a blackbody radiator. But my, perhaps naive, guess was that much of the light from "fire" was still due to thermal emission.

I have wondered about the CRI of firelight for many years for this exact reason, and am surprised that it seems that this information is not readily found. I recall last trying to search for this maybe ten (?) years ago and found nothing.

 

[McGizmo]

I recently purchased a small handheld spectrometer (my integrating sphere and computer based spectrometer have been in mothballs for about 10 year). Out of curiosity, I just held it up to a small candle flame in a dark room and got the following:

 

[archimedes]

Fantastic, much thanks !

I should have just asked you for this 10 years ago ...

 

[weezy]

I got the Sapphire 3600 and it is very warm and brighter than I would have expected. It works great for a middle of the night walk to the kitchen or toilet. I am not sure how much brighter the 5600 would be but I am thinking about getting one as well.

 

[ilikeguns40]

Perfect duo

 

[greatscoot]

I got the Sapphire 3600 and it is very warm and brighter than I would have expected. It works great for a middle of the night walk to the kitchen or toilet. I am not sure how much brighter the 5600 would be but I am thinking about getting one as well.

I've been on the fence as to which one to order and I feel that the 5600K may be more useful overall. I have a 3500K light and it's great at night, but kind of gets washed out during the day.

 

[ilikeguns40]

I've been on the fence as to which one to order and I feel that the 5600K may be more useful overall. I have a 3500K light and it's great at night, but kind of gets washed out during the day.

5600k has an excellent tint. It’s not as cool as you’d think.

 

[F89]

I've been on the fence as to which one to order and I feel that the 5600K may be more useful overall. I have a 3500K light and it's great at night, but kind of gets washed out during the day.

I’ve got the 5600K, it’s the one to get. Nice and white and renders well.
I also have a light with a 3200K Yuji. It’s a nice warm tint, more peachy than yellow, not a fan of yellow tints.

If you want the most pure light, 5600K version for sure. If you’re after a cosy warm tint then the 3200K is worth a go.

 

[kaichu dento]

I got the Sapphire 3600 and it is very warm and brighter than I would have expected. It works great for a middle of the night walk to the kitchen or toilet. I am not sure how much brighter the 5600 would be but I am thinking about getting one as well.

It was an unbelievable advance when we actually started to be able to get preferred tints, and I've long hoped that eventually the tint could be manipulated at will, much the same way that we can select brightness.

The warmer tones are so much more enjoyable at night, especially when not in work mode.

 

[McGizmo]

There has been an unexpected flurry of interest on the Sapphire and this has caught me short on components. I am now getting the converters from Rush in Germany and am waiting on the next batch. Sold out now for a month or two. It's also a bummer thta Yuji no longer makes the 5 mm LED's and I will run out of the 5600K at some point. I am down to only a couple of the 3200K. Unless I can find another source, I will be forced to go back to the Nichia GS at some point which work great but can't compare on a white wall with the Yujis.

 

[greatscoot]

There has been an unexpected flurry of interest on the Sapphire and this has caught me short on components. I am now getting the converters from Rush in Germany and am waiting on the next batch. Sold out now for a month or two. It's also a bummer thta Yuji no longer makes the 5 mm LED's and I will run out of the 5600K at some point. I am down to only a couple of the 3200K. Unless I can find another source, I will be forced to go back to the Nichia GS at some point which work great but can't compare on a white wall with the Yujis.

Thanks for the update.

I actually just sent an email.