-
Tired of adverts on RWI? - Subscribe by clicking HERE and PMing Trailboss for instructions and they will magically go away!
Gen PAMs have frozen halos too?
- Thread starter Ama Iro
- Start date
Genuine crystals have the cyclops milled into the underside of the crystal. The same is true for reps. The difference is that when the genuine crystal is made, an additional step is taken to polish the edges of the inside of the cyclops. Some reps obviously don't take this step, leaving behind the frozen halo.
There is a definite difference, however in the case of the pictures you linked, I think the lighting conditions are exaggerating the appearance of the Halo. Look again at some of the side angles where the halo looks transparent, that's how the gen should look.
There is a definite difference, however in the case of the pictures you linked, I think the lighting conditions are exaggerating the appearance of the Halo. Look again at some of the side angles where the halo looks transparent, that's how the gen should look.
- 18/1/11
- 19,846
- 423
- 83
As said by Grim PAM cyclops are recess-milled in the same piece of corumdum as the rest of the crystal. The frozen halo is due to the rough sidewall contour of the Cyclops, the transition rim between the inner crystal surface and the curve shaped surface of the cyclops.
Gens have a carefully polished cyclops sidewall contour, but reps have different degrees of polishing on the sidewall contour from nothing to good enough.
Even in the gen, although well polished cyclop sidewall contour, you cannot avoid a the transition rim between crystal and cyclops surfaces and under some lighting conditions this transition rim is enhanced and a little whitish halo can be visible.
In many reps is always noticeable.
Read to see all that:
http://www.repgeek.com/showthread.php?t=180337
ALE
Gens have a carefully polished cyclops sidewall contour, but reps have different degrees of polishing on the sidewall contour from nothing to good enough.
Even in the gen, although well polished cyclop sidewall contour, you cannot avoid a the transition rim between crystal and cyclops surfaces and under some lighting conditions this transition rim is enhanced and a little whitish halo can be visible.
In many reps is always noticeable.
Read to see all that:
http://www.repgeek.com/showthread.php?t=180337
ALE
Well said ALE!
The PAM243 is an example of an amazing rep cyclops, but in macro view the frosty interior edge is still slightly evident.
Heres an example of a less precise rep cyclops with a more obvious halo
The PAM243 is an example of an amazing rep cyclops, but in macro view the frosty interior edge is still slightly evident.
Heres an example of a less precise rep cyclops with a more obvious halo
Thanks as always for the great information. Interesting that gens can, under some conditions, also have this visible halo!
- 18/1/11
- 19,846
- 423
- 83
Yes under some conditions you can see something more whitish in gen cyclops.
But don't get wrong.
In gens is not really a frozen halo but a "different" reflection of the light in the "different" angle of the sidewall contour in relation to the crystal inner surface and the curve shaped inner surface of the cyclops. This transition rim generates some light reflections showing an appearance of a whitish halo.
In reps you have, besides, that the sidewall contour is not perfectly polished and therefore the surface is a bit "like sandblasted", therefore the effect is a more evident "frozen" halo.
In reps the effect is actually a "frozen" halo, in gens it is a different reflection like a whitish Halo
HALE ... Sorry ALE
