Hello everyone, first big thanks for this awesome tool like Rawtherapee!
So i ve buy the Spyderchekr color chart (48) and for make a dual illuminant we need to take a target with a sunny day at Zenith time, and withe a tungsten bulb. But tungsten bulb are no longer manufactured since 2012 in Europe. Im looking for it on ebay but no answer by the seller for the moment.
What kind of bulb can we use for replace the tungstene light please?
I’m looking into The Right Approach to using something other than an incandescent tungsten lightbulb for a general-purpose dual-illuminant profile. I suppose such a profile can be generated as long as one accurately describes the illuminant. Solux halogen 3500K lightbulbs seem to be adequate.
Please accept my apologies. I gave you bad information about the tungsten incandescent bulb.
I bought the same bulb in UK but I have just tested it now after reading your comment and it has blown out also.
This bulb will only accept 50V input, but the domestic power in France and UK is 240V.
So the filament melts as soon as it is switched on.
Morgan Hardwood has suggested the Solux Halogen 3500K and I believe he is correct in this.
I will try and find a UK retailer for it.and I am sure you will find a retailer in France or Germany
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Bear in mind that the Solux is a high efficiency bulb and requires </= 16V supply
Destroyed 2 rather irreplaceable pieces of hardware that way when I was a child. After that I lugged around a dead weight transformer in case I needed it.
I could help with generating the DCP profiles, since the SpyderCheckr software will only output a ICC profile. There are no presets for the SpyderCheckr 48 in Argyll, so I generated .cie and .cht files accordingly. Would gladly share to save you the effort.
It should work, since the SpyderCheckr 24 is just the right half of the 48. If you use the included cht and cie for the 24 on the 48 the dcp profile will only be based on half the reference values available though.
Would be interesting how much of a difference that makes in reality. Heres the cie and cht files i generated for the 48 if you want to give it a try. SpyderCheckr.zip (1.7 KB)
This is what I found on a search in Google.co.uk Philips 40W 240V ES/E27 A55 GLS Dimmable Incandescent Light Bulb
Retailer website is https://www.lampwise.co.uk/
However. the specification of this bulb shows the Colour Temp = 2700K. Do you think it matters that this does not meet the 2850K temp recommended in Dcamprof?
After much searching I have never found a 2850K equivalent.