Since no filter is ideal, it could be that a very strong red signal can produce a non-zero input to the green sensors.
I’m just speculating here, extrapolating from my experience with DSP.
Since no filter is ideal, it could be that a very strong red signal can produce a non-zero input to the green sensors.
I’m just speculating here, extrapolating from my experience with DSP.
Typically the raw green photosites are activated to some extent by red light, but the color profile matrix is supposed to correct for this.
But unless you designed the color profile with tulips in mind it might have errors for extreme colors.
Red by eye or instrument?
Yes, direct sunlight only.
By eye.
Indeed, the transitions between cooler and warmer reds in the petals look very strange, but they are definitely part of the captured values. I have tried both the standard Adobe matrix profile and few DCP profiles for the Canon 60D, with the same kind of result.
Here are two attempts, converted to sRGB from ACEScg with PhotoFlows’s gamut mapping function.
Accurate luminance, no saturation recovery:
With partial saturation recovery:
Interesting challenge! here’s my attempt (disclaimer: done on a crappy laptop screen – calibrated and profiled, but still crappy)
I’ll take a completely sideways look at the image here.
Hi, my contribute
IMG_1360_gem.CR2.pp3 (12.4 KB)
IMG_1360_gem.tif (3.1 MB)
How, do I attach the image, for viewing?? I do not no more able to I did sometime ago but now I do not how to …
Just use JPG.
Something just happened it seems.
Playing w/ @Joan_Rake1 modification of Spiral Matrix, and my own changes to it. Between the transforms, I smoothed the image.
Filmulator on macOS:
And its output:
Link to the dmg:
Side note: @CarVac am I missing an icon? The parameter reset buttons seem to be []
.
No, Filmulator is missing icons entirely. I used []
in lieu of making an icon.