Discussion of aset in simple terms

[Rockdiamond]

I felt that the video Garry posted, gave a nice idea of what his description of what good crushed ice looks like- I can't compare it to the real stone, but it was a reasonable representation of what I've seen in real life on different stones many times.
It's a different story trying to model a stone I am looking at.
To my eye, his video captured the look- tiny virtual facets, flickering on and off in extremely rapid succession. The one ccl just posted has large virtually static black areas that do not exist in real life.

 

[Garry H (Cut Nut)]

I felt that the video Garry posted, gave a nice idea of what his description of what good crushed ice looks like- I can't compare it to the real stone, but it was a reasonable representation of what I've seen in real life on different stones many times.
It's a different story trying to model a stone I am looking at.
To my eye, his video captured the look- tiny virtual facets, flickering on and off in extremely rapid succession. The one ccl just posted has large virtually static black areas that do not exist in real life.

David you do not see the dark zones because you are 18 inches away.
Many young people look from 8-10 inches and they would see big ones.
I suggested a mid distance - try it

Here is a video made again with 12 bounces and this time in the HDR lighting for my store.
The desk behind the stone is dark, almost black, and you can see more dark zones in this movie.
If it were 1ct they would be too small to provide more than some contrats. but this model is a 9ct stone, so it might not be perfect. but it is the best example I have found so far.
BTW it was polished in LTM which is the contract polishing facility that Sergey and Janak have established in Surat.

http://www.youtube.com/watch?v=NKZgi3a69vM

 

[ChunkyCushionLover]

Garry, can you do a clip on that stone with ASET too?

http://www.youtube.com/watch?v=fkFpGz7yd-s

 

[Rockdiamond]

Garry- I've looked at from 18 inches- and brought it in as close as possible- no large dark zones.

 

[ChunkyCushionLover]

Garry- I've looked at from 18 inches- and brought it in as close as possible- no large dark zones.

What was the lighting? Any pavilion lighting?
What was the background color?

 

[stone-cold11]

Thanks CCL.

 

[Rockdiamond]

It was office lighting ( high overhead fluorescent) and some ambient daylight.
The stone was in a parcel paper, face up- blocking the pavilion.
The color of the inside of this parcel paper is a light blue.

It's dark now - no more ambient light.
i just tried with the stone in between my fingers.
From arm's length to as close as I can focus- about 4 inches.
I observed no large dark zones.

With severe tilt ( maybe like 30 degrees) I can induce a dark area in the opposite quadrant of the table.

eta photo- Good Crushed Ice Example next to RBC
TBL:57
D:60.2
CA:33
PA:41.2
Triple EX

Photos taken in rapid succession in overhead lighting.

 

[ChunkyCushionLover]

Need magnified photographs.

 

[Rockdiamond]

I shot with the camera at a distance from the lens- and did not crop the photos.
But if there were large dark zones- we'd be able to see them

 

[ChunkyCushionLover]

I shot with the camera at a distance from the lens- and did not crop the photos.
But if there were large dark zones- we'd be able to see them

Can't see anything, sorry you'll have to do better.

RD even the video you shot had dark zones do you have selective memory?