strmrdr
Super_Ideal_Rock
- Joined
- Nov 1, 2003
- Messages
- 23,295
SG..., a bit steeper PA and a polished culet on a real Diamond you would think differently...Date: 3/26/2008 7:28:51 PM
Author: surfgirl
Sorry...but that''s not a look I''d ever go for in an OEC...Too frenetic around the edges and weird looking...Sometimes, computers cant create the art that a human being can.
Thanks..., see..., you learn something every day.:} I guess you can tell I am so out of the tech science of rounds...Date: 3/26/2008 7:48:20 PM
Author: Garry H (Cut Nut)
DG AGS do not consider proportions except for durability issues.
Somethings computers can do - that is compare cutsDate: 3/26/2008 7:28:51 PM
Author: surfgirl
Sorry...but that''s not a look I''d ever go for in an OEC...Too frenetic around the edges and weird looking...Sometimes, computers cant create the art that a human being can.
apples too oranges really.Date: 3/26/2008 8:30:53 PM
Author: surfgirl
So Gary, which of those is more desirable because I dont see that one image is standing out to me as fantastic as compared to the other...Or is it comparing apples to oranges? Or papayas??
DG, that above image looks too 'busy' to my eye around the perimeter...It's what I dont like about some ECs - the business around the short ends, contrasted to the quietness of the middle...if that makes sense..??
its not possible in the limited combos I have tried.Date: 3/26/2008 7:25:45 PM
Author: DiaGem
Nice storm..., what would make it qualify for a 0 grade? CA?
Is it even possible with such a table and these lgf''s??
Surfgirl there are differences, it is complex and 2 women waitng for meDate: 3/26/2008 8:30:53 PM
Author: surfgirl
So Gary, which of those is more desirable because I dont see that one image is standing out to me as fantastic as compared to the other...Or is it comparing apples to oranges? Or papayas??
DG, that above image looks too ''busy'' to my eye around the perimeter...It''s what I dont like about some ECs - the business around the short ends, contrasted to the quietness of the middle...if that makes sense..??
Well Gary, now you have THREE women waiting for you... *taps foot impatiently*...Date: 3/26/2008 9:37:07 PM
Author: Garry H (Cut Nut)
Surfgirl there are differences, it is complex and 2 women waitng for meDate: 3/26/2008 8:30:53 PM
Author: surfgirl
So Gary, which of those is more desirable because I dont see that one image is standing out to me as fantastic as compared to the other...Or is it comparing apples to oranges? Or papayas??
DG, that above image looks too 'busy' to my eye around the perimeter...It's what I dont like about some ECs - the business around the short ends, contrasted to the quietness of the middle...if that makes sense..??
yep all I need is a 3d sarin or helium file.Date: 3/26/2008 9:39:56 PM
Author: surfgirl
Well Gary, now you have THREE women waiting for you... *taps foot impatiently*...![]()
Storm, DG, I''m not sure what software you''re using but is there a way you can scan people''s old cuts into that program and see what they look like? I''m just curious as it would be interesting to see actual PSers old stones in those very scientific mappings, etc...![]()
some do some dont. The stone has to be lose too be ran on the scanner.Date: 3/26/2008 9:52:09 PM
Author: surfgirl
Since I never bought a ''new'' stone, I''m not familiar with how one actually gets a Sarin report. Do most good independent appraisers have the equipment to provide a Sarin report?
ETA: What''s a helium file?
well, the difference is they can hurt me with sticks and stonesDate: 3/26/2008 9:37:07 PM
Author: Garry H (Cut Nut)
Surfgirl there are differences, it is complex and 2 women waitng for meDate: 3/26/2008 8:30:53 PM
Author: surfgirl
So Gary, which of those is more desirable because I dont see that one image is standing out to me as fantastic as compared to the other...Or is it comparing apples to oranges? Or papayas??
DG, that above image looks too ''busy'' to my eye around the perimeter...It''s what I dont like about some ECs - the business around the short ends, contrasted to the quietness of the middle...if that makes sense..??
with a 60% lgf% head shadow issues if a fact of life, they look better at arm length than 1/2 way too your face.Date: 3/27/2008 2:21:55 AM
Author: Garry H (Cut Nut)
well, the difference is they can hurt me with sticks and stones, and you can only call me names![]()
![]()
Note the earlier ETAS had bigger flashes that will jump at you - why many people like older cuts, where as the other Tolkowsky round has smaller but more frequent flashes.
Now this time we have DETAS - same as before but Dynamic. The stone has been rotated 2 degrees and the flashes (or potential sources of light) are also colour coded.
I will see if Sergey can drop by to explain more, but as before you see much bigger stronger flashes, but less of them.
I am a little concerned however Storm as your new stone will loose most of theose face up flashes near the center because of head obstruction of light sources.
Date: 3/27/2008 3:29:03 AM
Author: strmrdr
with a 60% lgf% head shadow issues if a fact of life, they look better at arm length than 1/2 way too your face.Date: 3/27/2008 2:21:55 AM
Author: Garry H (Cut Nut)
well, the difference is they can hurt me with sticks and stones, and you can only call me names![]()
![]()
Note the earlier ETAS had bigger flashes that will jump at you - why many people like older cuts, where as the other Tolkowsky round has smaller but more frequent flashes.
Now this time we have DETAS - same as before but Dynamic. The stone has been rotated 2 degrees and the flashes (or potential sources of light) are also colour coded.
I will see if Sergey can drop by to explain more, but as before you see much bigger stronger flashes, but less of them.
I am a little concerned however Storm as your new stone will loose most of theose face up flashes near the center because of head obstruction of light sources.
There is really no way around it.
Why is head shadow such an issue..., what % of time you wear your Diamond in jewelry gets obstructed by head shadow?
A big difference between a poorly angled oec and a well cut one is that the poorly angled one can look good at 6 feet and good one at 2. Just the difference in head shadow between the IS and ASET can make a huge difference in how the image looks in some combos and how they will look in person.
Head shadow is a highly underrated component of diamond performance in fancies and a major failing of the ags SE/EC cut system by only considering 30 and 40 degrees.
A fic(long lgf%) would be better up close but you lose the large flashes and are back too small too very small ones.
Which is good for head shadow appearance but less for overall appearance (my taste)!
Can DC pro automate images with varying head shadow for a given combo?
They would be a real eye opener with fancy cuts and also prove my point.
I am really giving too much of my design secrets away in this post. :}
Date: 3/27/2008 3:52:34 AM
Author: strmrdr
The ASET images in the table area show why AGS kicked it down for contrast.
But too darken the mains they will hit it the other way.
What happens if you go shallower on the pavilion angles and leave head shadowing out of the equation? Is it possible to show virtually?
The JS lighting shows that its not a very practical real world indication of how the stone works.
I have ran into this with high crown asschers also. I think the high crown messes with the relationship between the reflectors and the stone that works with lower crowns differently.
Maybe Serg will know?
![]()
head shadow is present anytime your looking at a diamond(and not reflections on something and then environmental shadow is still present) or no light would be returning too your eyes.Date: 3/27/2008 4:02:20 AM
Author: DiaGem
Date: 3/27/2008 3:29:03 AM
Author: strmrdr
with a 60% lgf% head shadow issues if a fact of life, they look better at arm length than 1/2 way too your face.Date: 3/27/2008 2:21:55 AM
Author: Garry H (Cut Nut)
well, the difference is they can hurt me with sticks and stones, and you can only call me names![]()
![]()
Note the earlier ETAS had bigger flashes that will jump at you - why many people like older cuts, where as the other Tolkowsky round has smaller but more frequent flashes.
Now this time we have DETAS - same as before but Dynamic. The stone has been rotated 2 degrees and the flashes (or potential sources of light) are also colour coded.
I will see if Sergey can drop by to explain more, but as before you see much bigger stronger flashes, but less of them.
I am a little concerned however Storm as your new stone will loose most of theose face up flashes near the center because of head obstruction of light sources.
There is really no way around it.
Why is head shadow such an issue..., what % of time you wear your Diamond in jewelry gets obstructed by head shadow?
A big difference between a poorly angled oec and a well cut one is that the poorly angled one can look good at 6 feet and good one at 2. Just the difference in head shadow between the IS and ASET can make a huge difference in how the image looks in some combos and how they will look in person.
Head shadow is a highly underrated component of diamond performance in fancies and a major failing of the ags SE/EC cut system by only considering 30 and 40 degrees.
A fic(long lgf%) would be better up close but you lose the large flashes and are back too small too very small ones.
Which is good for head shadow appearance but less for overall appearance (my taste)!
Can DC pro automate images with varying head shadow for a given combo?
They would be a real eye opener with fancy cuts and also prove my point.
I am really giving too much of my design secrets away in this post. :}
sure iso no head, same angles.Date: 3/27/2008 4:04:39 AM
Author: DiaGem
Date: 3/27/2008 3:52:34 AM
Author: strmrdr
The ASET images in the table area show why AGS kicked it down for contrast.
But too darken the mains they will hit it the other way.
What happens if you go shallower on the pavilion angles and leave head shadowing out of the equation? Is it possible to show virtually?
The JS lighting shows that its not a very practical real world indication of how the stone works.
I have ran into this with high crown asschers also. I think the high crown messes with the relationship between the reflectors and the stone that works with lower crowns differently.
Maybe Serg will know?
![]()