Photographic Objectives And Photo-Optical Auxiliary Appliances. Carl Zeiss

been enabled to construct anastigmatically well corrected objectives with reduced secondary spectrum. We flatter ourselves that we have therely rendered an important service to the reproduction branch of photography, and this opinion has received confirmation from the large number of letters of commendation received by us.

      In conclusion, having received many urgent solicitations for light objective mounts, we have decided to supply our objectives in future, if specially so ordered, in mounts of a light alloy of aluminium. This metal, if not subjected to careless usage, offers a sufficient guarantee of durability, it diminishes the weight of an objective considerably, and will, no doubt, gain special favour as a material for mounting the objectives of hand cameras.

      Jena, March 1901.

       Carl Zeiss,

       Section for Photography.