Gmt master one

In addition to conventional hour, minute and seconds hands, the GMT-Master II features an arrow-tipped hand, which circles the dial once every 24 hours, as well as a bidirectional rotatable 24-hour graduated bezel. The distinctively coloured 24-hour hand displays the “home” reference time in a first time zone which can be read on the graduations on the bezel. The traveller’s local time is easily set by “jumping” from hour to hour, thanks to an ingenious mechanism operated via the winding crown: the hour hand can be adjusted forwards or backwards independently of the minute and seconds hands. This allows travellers to adapt to their new time zone without affecting the precision of their timekeeping.

Colors in GMT are specified in the RGB system used for computer screens; it mixes red, green, and blue light to achieve other colors. The RGB system is a Cartesian coordinate system and produces a color cube. For reasons better explained in Appendix I in the Reference book it is difficult to darken and brighten a color based on its RGB values and an alternative coordinate system is used instead; here we use the HSV system. If you hold the color cube so that the black and white corners are along a vertical axis, then the other 6 corners project onto the horizontal plane to form a hexagon; the corners of this hexagon are the primary colors Red, Yellow, Green, Cyan, Blue, and Magenta. The CMY colors are the complimentary colors and are used when paints are mixed to produce a new color (this is how printers operate; they also add pure black (K) to avoid making gray from CMY). In this coordinate system the angle 0-360º is the hue (H); the Saturation and Value are harder to explain. Suffice it to say here that we intend to darken any pure color (on the cube facets) by keeping H fixed and adding black and brighten it by adding white; for interior points in the cube we will add or remove gray. This operation is efficiently done in the HSV coordinate system; hence all GMT shading operations involve translating from RGB to HSV, do the illumination effect, and transform back the modified RGB values.

i’ve just seen the 116719 BLRO. it is an absolutely lovely watch. the red and blue color is very deep, mature, noble color (i don’t really know how to express this beautiful color tone. it just simply a much better pepsi color than the old pepsi). While the BLNR is very much “ordinary”, because it only shows its beauty under the bright lightings. Other than that, the blnr is just look like a normal 116710 LN. I found that Lunette Verte, Hulk to be much attractive model compared to the blnr. Hulk is love at the first sight. 116610 LV is definitely not a photogenic watch (with its continuous color changing “mode”). I have the same feelings when I first see the 116719 BLRO. How I wish it comes out in steel (which I don’t think will happen). I guess the reason that Rolex made this new pepsi in a white gold is just simply: it is an exceptionally beautiful color invention that represent classic timeless Rolex GMT Master. And so, they put it with the “highest ranked” material. Personally, I feel lucky that Rolex did not launch the Hulk in white gold…LOL.

Gmt master one

gmt master one


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