Hi everyone. I recently discovered something called “LED”. I now own two LED appliances - one called “RGB light”, and a “Royal Blue 10W COB LED”.
Here’s one of my first tests:
Processed with experimental program.
So excited about the creative potential of LEDs! And proud to be an early adopter.
(Yes I know LEDs have been around for years)
EDIT:
I think my first edit was a little too light?
5D3_9253.CR2 (23.5 MB)
This file is licensed Creative Commons, By-Attribution, Share-Alike.
Really smooth gamut compression!
I know it looks like it, but it’s pretty similar to darktable’s filmic (I think) except I’m experimenting with Luminance + Nayatani HKE for the brightness scale, and Jzazbz for the hue linearity.
I wouldn’t even call it gamut compression, as it’s not tied to the gamut volume (yet). That’s the next step. It’s definitely compressing the colour in some way, but not to any specific gamut sadly.
@ilia3101 The left lens is a 37mm Mir-1.
But the right one? A Jupiter-something?
Also: hope you will have great fun with the LEDs!
Have fun!
Claes in Lund, Sweden
It’s a Tair 11, 133mm 2.8. Picture was shot with the helios 44.
Thank you, I will definitely have a lot of fun with the LEDs.
Does anyone here have lightroom? How good can you make this picture look in lightroom?
Oh. It very much looked like a Jupiter-8 
I have never seen a Tair in real life.
Were they not the ones that made
a “photo-sniper” version?
Photosniper was the 300mm Tair
I think Jupiter, Tair and Helios were kind of like ‘brands’?
My attempt for silky gradients, neutral neutrals, detailed darks and in gamut bliss. Looks a touch colourless viewed with monitor set to sRGB, but has some pop set to adobe RGB.
guys-i-discovered-led-5D3_9253.CR2.xmp (14.8 KB)
dt 3.6.1
Lightroom for shits and giggles:
Exposure +0.35, 5000 Kelvin, other than that, default settings. Could not fix it using any of the available parameters.
Giggles indeed, heh.
Well, as you like LEDs, here is some (yet) unpublished (German) work of mine:
Spectrum of some arbitrary red, green and blue LED.
To complete, here are a classic light bulb, a modern energy-saving bulb, and a “white” LED:
[Win19d] Ulrich Windl. (c) 2019. Erstellt mit ArgyllPRO, 2019.
Beautiful data.
I like incandescent/halogen bulbs very much too.
I have never really understood why there is such harshness of Energy saving and LED lighting when compared to incandescent lighting.
This is the most wonderful data I have come across to graphically demonstrate these very obvious qualities and why incandescent lighting is so much more pleasing and kinder to the eye.
I hope I am correct in interpreting the slope of the curve as the harshness of the lighting. The graph of the Philips bulb is smooth and contains shallow slope and there are no gaps in the spectrum.
In contrast to this, the two other other light sources have gaps in the spectrum which in turn leads to steep slopes in their curves and the associated harshness/dazzling nature of their light.
Thankyou for providing this insight.
Use the forum search utility and request
Spectral emission
to learn even more…
Thanks Claes, I had a look at that scary place and discovered many things including how little i know about the subject!
Very interesting nevertheless
