However, the effects of temperature on the elasticity of topaz remains poorly explored. Effect of OH = F substitution on the elasticity has also been explored using first principles simulation 12.
TOPAZ DETAIL VS EDG CYCLE FULL
More recently pressure dependence of the full elastic constant tensor of topaz-OH has been explored using first principles method based on density functional theory 11. Thus, elasticity of fluorine bearing topaz has been examined at ambient conditions 10. In order to relate the degree of mantle hydration caused by the subduction of hydrated sedimentary rocks, we need a better constraint on the elastic properties of the constituent mineral phase. Thus, the hydroxyl rich topaz might play a significant role in transporting water in to the deep Earth 9. In addition, experimental studies on the Al 2O 3-SiO 2-H 2O ternary system that represents subducted hydrated sediments revealed end-member topaz-OH (Al 2SiO 4(OH) 2) as a likely phase stable up to a pressure of around ~12 GPa 6– 9. Hydroxyl components in topaz are enriched in ultrahigh-pressure metamorphic rocks 2, 5. Topaz is also one of the principal fluorine bearing silicates that occur in fluorine rich pegmatitic rock 1– 4. Topaz is an aluminosilicate mineral with a general stoichiometry of Al 2SiO 4F 2 x(OH) 2(1 −x), with x = 0 representing hydroxyl end-member of topaz and x = 1 representing fluorine end-member of topaz. The Debye temperature shows positive correlation with density of the mineral phases in the Al 2O 3-SiO 2-H 2O ternary system. We also note that the Debye temperature ( Θ D) of topaz at room temperature condition is 910 K and decreases at higher temperature. The effect of composition ( x O H) on the velocity is equally important as that of the effect of temperature. The elasticity and sound velocity of topaz also vary as a function of OH and F content. As a function of temperature, the sound velocity of topaz decreases with d V P d T and d V S d T being −3.10 and −2.30 × 10 −4 km/s/K. We find that among the various minerals stable in the Al 2O 3-SiO 2-H 2O ternary system, topaz exhibits moderate elastic anisotropy.
We also explored the temperature dependence of the full elastic constant tensor. We investigated elasticity of naturally occurring single crystal topaz (Al 2SiO 4F 1.42(OH) 0.58) using Resonant Ultrasound Spectroscopy. In nature, topaz often exhibits solid solution between fluorine and hydrous end members.
TOPAZ DETAIL VS EDG CYCLE PRO
That being said, Nik Sharpener Pro is really top shelf outstanding, but like the OP, I'm not willing to pay that much (or more for the entire package just to get it).Topaz is an aluminosilicate mineral phase stable in the hydrothermally altered pegmatitic rocks and also in subducted sedimentary lithologies. Of course, YMMV.Īlthough I've not used FocusMagic, I agree 100% with tclune's comments on InFocus and Detail 2. I suspect that someone who was more fully immersed in USM operation could do the same thing Detail does without using a separate tool, but the controls of USM just don't "speak to me" like Detail's controls do. It is a completely different approach from FocusMagic (it seems to be an USM utility, while FocusMaigic - like InFocus - is a deconvolution.) I typically use Detail 2 for my middle-phase sharpening (after I've straightened, cropped, tone-mapped, and globally denoised, but before I do any mask work. It is easy to control and the adjustments make sense. The preview window is quite small, which can be a bit of a pain sometimes, but overall I find it very easy to get just what I want with very little fiddling. The controls are quite limited - you set the pixel radius in integer increments and can apply a blending percent to the result if you like. The interface for FocusMagic is very simple. So I am collapsing the image into 8bpc anyway at that point. This isn't as serious a limitation as it sounds, because I use it during the final sharpening before output. I really like FocusMagic, but it is strictly 8-bits per channel. But that may just be because I've never really "grokked" the controls.
I have found InFocus to be of absolutely no use to me, as it is very hard to use and does not seem to do a very good job. I've used Topaz InFocus and FocusMagic, as well as Topaz Detail 2.
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