gpwhite Posted October 26, 2015 Share #1 Posted October 26, 2015 Advertisement (gone after registration) Does anyone know, perhaps from their own copy, whether the Elmarit-M 90mm titan finish weighs little (like black) or a lot (like chrome)? I have searched the forum posts for this info and have learned that the Leica titan lens finish is reputedly titanium nitrite-- quite durable. But nowhere does it say whether Leica deposited the titan finish onto brass lens barrels, which I find heavy, or aluminum. Link to post Share on other sites More sharing options...
Advertisement Posted October 26, 2015 Posted October 26, 2015 Hi gpwhite, Take a look here Elmarit-M 90mm titan. I'm sure you'll find what you were looking for!
Simon Bee Posted October 26, 2015 Share #2 Posted October 26, 2015 Does anyone know, perhaps from their own copy, whether the Elmarit-M 90mm titan finish weighs little (like black) or a lot (like chrome)? I have searched the forum posts for this info and have learned that the Leica titan lens finish is reputedly titanium nitrite-- quite durable. But nowhere does it say whether Leica deposited the titan finish onto brass lens barrels, which I find heavy, or aluminum. It's onto brass, weight wise it's a "pocket sized canon ball !" but one hell of a lens and IMO not too heavy, then again I have always preferred the smoothness of the brass lenses so tolerate the extra weight. Kind regards, Simon Link to post Share on other sites More sharing options...
luigi bertolotti Posted October 26, 2015 Share #3 Posted October 26, 2015 The 11899 lens (Elmarit M 90 Titanium finish) was listed with a declared weight of 560g - same as the chrome (Ken Rockwell writes of it as "Titanium paint on aluminium", which imho isn't correct) Link to post Share on other sites More sharing options...
semi-ambivalent Posted October 26, 2015 Share #4 Posted October 26, 2015 (Ken Rockwell writes of it as "Titanium paint on aluminium", which imho isn't correct) Not that The Ken and I are ganging up on you but what is it then? Can you electroplate titanium onto a base metal? I'm serious here. Regards, s-a Link to post Share on other sites More sharing options...
jdlaing Posted October 27, 2015 Share #5 Posted October 27, 2015 Yes. You can. But I doubt that it's plating on a lens barrel. Link to post Share on other sites More sharing options...
Schrödinger's cat Posted October 27, 2015 Share #6 Posted October 27, 2015 Not that The Ken and I are ganging up on you but what is it then? Can you electroplate titanium onto a base metal? I'm serious here. Regards, s-a No listing for titanium nitrite and titanium nitritde has a distinct gold color. However.......... "The most common methods of TiN thin film creation are physical vapor deposition (PVD, usually sputter deposition, cathodic arc deposition or electron beam heating) and chemical vapor deposition (CVD).[11] In both methods, pure titanium is sublimated and reacted with nitrogen in a high-energy, vacuum environment. TiN film may also be produced on Ti workpieces by reactive growth (for example, annealing) in a nitrogen atmosphere. PVD is preferred for steel parts because the deposition temperatures exceeds the austenitizing temperature of steel. TiN layers are also sputtered on a variety of higher melting point materials such as stainless steels, titanium and titanium alloys.[12] Its high Young's modulus (values between 450 and 590 GPa have been reported in the literature [13]) means that thick coatings tend to flake away, making them much less durable than thin ones. Titanium nitride coatings can also be deposited by thermal spraying whereas TiN powders are produced by nitridation of titanium with nitrogen or ammonia at 1200 °C.[1] Bulk ceramic objects can be fabricated by packing powdered metallic titanium into the desired shape, compressing it to the proper density, then igniting it in an atmosphere of pure nitrogen. The heat released by the chemical reaction between the metal and gas is sufficient to sinter the nitride reaction product into a hard, finished item." Probably not what I would have called paint, but that's Ken for you Link to post Share on other sites More sharing options...
gpwhite Posted October 27, 2015 Author Share #7 Posted October 27, 2015 Advertisement (gone after registration) What I read on an old post is consistent with the idea that the titanium nitrite is deposited onto the the cast barrel somehow in an atmosphere lacking oxygen. I was most interested in weight actually, and Simon kindly pointed out that the titan Elmarit is a brick. In terms of the finish itself, my favorite M6 was a titan with "ostrich" covering. Indeed, the body was substantially heavier than my black M6 and sported a very durable finish. Whether the titan lenses are the same finish as the titan body, only someone now in Wetzlar would know. Thanks for all of the clarifications! Link to post Share on other sites More sharing options...
jdlaing Posted October 27, 2015 Share #8 Posted October 27, 2015 What I read on an old post is consistent with the idea that the titanium nitrite is deposited onto the the cast barrel somehow in an atmosphere lacking oxygen. I was most interested in weight actually, and Simon kindly pointed out that the titan Elmarit is a brick. In terms of the finish itself, my favorite M6 was a titan with "ostrich" covering. Indeed, the body was substantially heavier than my black M6 and sported a very durable finish. Whether the titan lenses are the same finish as the titan body, only someone now in Wetzlar would know. Thanks for all of the clarifications! Titanium Nitride is, I believe, a ceramic material and not the same thing. Link to post Share on other sites More sharing options...
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