charliexia Posted February 17, 2006 Share Posted February 17, 2006 I've recently acquired a black S-Planar C lens. Looking at the lens elements I can see it has been multi coated, but I can't find the t* mark on the barrow. Will there be a differenc in performanc between this lens and a t* coated lens when dealing with strong backlighting? the serial no. is 4534173. Any help would be greatly apriciated! I just got my first roll back and I must say I'm very impressed with the sharpness... with a loup i can count the capillaries in the model's eyes!!! Link to comment Share on other sites More sharing options...
jean-louis llech Posted February 17, 2006 Share Posted February 17, 2006 If your Hasselblad/Zeiss lens is like Rollei/Zeiss lenses, some of them had a HFT coating, but without the "HFT" label. Link to comment Share on other sites More sharing options...
the shuttered eye Posted February 17, 2006 Share Posted February 17, 2006 This is a macro lens that requires either the Hasselblad auto bellow or a variable extenison tube for focussing. How are you focusing it? On what camera are you using it (I assume it is a Hasselbald, or something else via an adapter). If it's a black Zeiss lenses for Hassy then it is unlikely that it is not a T* couted lens. When you look at the surface of the lens what color does the coating appear to be? Link to comment Share on other sites More sharing options...
q.g._de_bakker Posted February 17, 2006 Share Posted February 17, 2006 Charlie,<br><br>As a general rule: if it is a black C lens, it probably indeed have T* multicoating.<br>However, as general rules go, there are exceptions, and the 135 mm lenses is one. They were all black.<br>Your lens is from about 1968 (a rather early one) an will have single layer T (no star) coating.<br><br>The difference in performance between T and T* coated lenses is minimal. Don't worry. Link to comment Share on other sites More sharing options...
charliexia Posted February 17, 2006 Author Share Posted February 17, 2006 thank you Jean for your quick reply. I guess I got the lens at a bargin, as the dealer told me that it's not a t* lens. Lotus, I'm fully aware that this lens only works on a bellow, or a special focusing helical, both of wich I have. Thank you for pointing it out to me. FYI, some black C lenses do not have the T* coating... for example the black C 250mm 5.6 And Q.G. de Bakker... You Da Man!!! So i guess there was a stage when Zeiss did multi coating, but not T* multi coating? Link to comment Share on other sites More sharing options...
q.g._de_bakker Posted February 17, 2006 Share Posted February 17, 2006 Charlie,<br><br>No. There was a period (quite a long one) that Zeiss applied a <b>single layer</b> coating (marked by a "<b>T</b>" in red), <b>before</b> they started applying a <b>multi layer</b> coating (marked by a "<b>T*</b>", a "T" plus a star, in red).<br>Your lens has a <b>single layer</b> coating. Link to comment Share on other sites More sharing options...
charliexia Posted February 20, 2006 Author Share Posted February 20, 2006 once again, Thanks Q.G. Guess i was being overy optimistic... Another question, can i use the lens hood for the 150mm C on the 135mm for normal walk around situations? will it cause vignetting when i focus the 135mm to infinity? Link to comment Share on other sites More sharing options...
q.g._de_bakker Posted February 20, 2006 Share Posted February 20, 2006 Charlie,<br><br>That lenshood will be fine, yes. Despite the "150" imprint it may have, it works with all lenses from 100 mm and up. Link to comment Share on other sites More sharing options...
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