- Joined
- Aug 15, 2000
- Messages
- 18,791
ChunkyCushionLover|1291877062|2791878 said:
Interesting CCL
See this next video
http://www.youtube.com/watch?v=OECvvSx8dtI
ChunkyCushionLover|1291877062|2791878 said:
Garry H (Cut Nut)|1291877853|2791879 said:Here is what I modelled and put on Youtube:
http://www.youtube.com/watch?v=Z0xAfLHsWIs
ASET colour changes with only a small pavilion variation modelled in DiamCalc with a mid point of 40.74 pavilion. At this exact point the center of the stone recieves light from the ASET Red Green edge and the shallower angle draws from green and the deeper from the red zone. Mixing in the middle creates yellow.
After looking at a few stones and gently tilting, I can see how photo shop will 'adjuts' these colors to Yellowish.
PS - I doubt there would be much dispersion happening in that video
Garry H (Cut Nut) said:Here is what I modelled and put on Youtube:
http://www.youtube.com/watch?v=Z0xAfLHsWIs
ASET colour changes with only a small pavilion variation modelled in DiamCalc with a mid point of 40.74 pavilion. At this exact point the center of the stone recieves light from the ASET Red Green edge and the shallower angle draws from green and the deeper from the red zone. Mixing in the middle creates yellow.
After looking at a few stones and gently tilting, I can see how photo shop will 'adjuts' these colors to Yellowish.
PS - I doubt there would be much dispersion happening in that video
Not suggesting you did CCL - but i will bet Rhino isChunkyCushionLover|1291879553|2791892 said:Garry I don't change or enhance anything I am using Snagit direct screen capture I do not use photoshop for this.
When I capture an image the colors match the original when I upload it to pricescope.
I am seeing the real world WITH dispersion.ChunkyCushionLover|1291883168|2791905 said:
ChunkyCushionLover|1291879084|2791889 said:Garry H (Cut Nut) said:Its only yellow due to dispersion I beleive that to be an artifact of Diamcalc and this would not be readily observable IRL.
ChunkyCushionLover|1291938703|2792641 said:Garry,
If you claim you are seeing it with your eyes and camera please explain further.
What exactly is going on at 3 O'Clock in those 4 images?
Why would their be dispersion only in that area? (Inclusions? Badly Assymetric cutting? Non Uniform lighting? Color Bleeding?)
To prove your theory that if the facets are on the border of the Red/Green border or receiving light at right around 45 degrees the light can mix we would need to see yellow in the table reflection area right above the culet. Do you have a picture of that somewhere?
To the second possible explanation, can you explain why you would expect to only see strong red flashes from dispersion in some areas and not see the other colors when viewing through an ASET scope? ( I would not expect a diffuse backlit ASET to be a strong 'fire friendly' environment)
ChunkyCushionLover|1291883168|2791905 said:
Garry H (Cut Nut)|1291865576|2791744 said:Perhaps Rhino will send me the 3D Gem file and I can settle this (since he knows i can model his exact proportions anyway )
But here is a quick and dirty with a color that would not quite be 'O' modeled in DiamCalc.
Its a chopped up RBC Sara. Did not save the proportions, but there are thousands of possabilities like itCehrabehra|1292400962|2797410 said:Garry H (Cut Nut)|1291865576|2791744 said:Perhaps Rhino will send me the 3D Gem file and I can settle this (since he knows i can model his exact proportions anyway )
But here is a quick and dirty with a color that would not quite be 'O' modeled in DiamCalc.
I don't know what this is Garry, but I want one. I love the faceting. It looks like an omc and oec hopped into bed and produced a beautiful lovechild.
Interesting Sergey, does this explain why the crown facets here have more orangy colour in this ASET which is huge?Serg|1293209023|2805448 said:re:But this is what I normally see for photographed Green/Red Boundary.
CCL,
results depends from ASET size. In DC we use ASET size what is 3 times bigger than smallest ASET is.
if ASET has small size, spatial dispersion is not big enough to receive yellow( you can see yellow in Big ETAS and you can not see Yellow in small ETAS, for such RBC)
ChunkyCushionLover|1291875091|2791868 said:Gary by definition in ASET one should not get mixing of Red and Green in the same area. That certainly is not the case for any AVC I have ever seen. Green/White or Green/Yellow in this case okay but Red/Green ????.Garry H (Cut Nut) said:Iota it is exactly the same as anASEt image center of a diamond with a 40.75 degree pavilion - there is mixing of red and green = yellow.iota15|1291870214|2791831 said:Are the areas I circled on the Aset leakage or not?
Iota's point is supported by the following, for this AVC (I've added a light yellow natural diamond absorption to it) the correlation between the IS and ASET is much better.
kenny|1357235853|3346400 said:Serg, FYI this thread is 2 years old.
I believe CCL is long gone and, in fact, banned.