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Grug

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  1. Thanks
    Grug got a reaction from TheRenaissanceMan in Sigma classic cine lenses   
    What about them? If you reduce or remove a lens coating, you decrease the light transmission that the lens is capable of. How much by, will be determined by the specifics of the glass and coatings in question.
    Uncoated Superspeeds will have less transmission than the original coated versions. That’s just physics  
    Are rental houses documenting the transmission loss and adding additional markings to the few lenses they’ve had de-coated? Probably not in most cases. 
    But that doesn’t change the fact that those lenses are losing some degree of transmissiveness.
  2. Thanks
    Grug got a reaction from IronFilm in Sigma classic cine lenses   
    What about them? If you reduce or remove a lens coating, you decrease the light transmission that the lens is capable of. How much by, will be determined by the specifics of the glass and coatings in question.
    Uncoated Superspeeds will have less transmission than the original coated versions. That’s just physics  
    Are rental houses documenting the transmission loss and adding additional markings to the few lenses they’ve had de-coated? Probably not in most cases. 
    But that doesn’t change the fact that those lenses are losing some degree of transmissiveness.
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