Look for signs of knocks/dents, missing screws or screws with damaged heads (= someone incompetent tried to take it apart). The diaphragm effectively stops down to the chosen values.
Mechanical: all focusing, zoom and diaphragm mechanisms move smoothly and without too much play or looseness. So, how and what to check when the lens in hand ? Physical appearance of rear crystals, image IQ, anything else ? Will be used adopted with Fuji X-H1.Īll the lenses I receive (even new ones!) are checked in the following ways: So here is my query: Is there any practical and relatively easy way to check the condition of a new (used) lens? How do many of you decide if an item (lens) is up to your expectations ? I have read that many of you can decide if the quality is not satisfactory and return the lens to the seller and then try another and this maybe once or several times until find a top item. If I rememeber correct this is because of the detachment of the glued elements. It is well known that the 100-300 vario-sonnar is plagued by haze of the rear element(s) that can happen in due time.
I know at least 3 or 4 experienced with Contax Zeiss contributors in this forum that could tell about the image quality and the condition of a specimen. Optical cond: 9/10 * The lens is free of haze no fungus. The highly acclaimed CZ VS 100-300mm was found in a very tempting price from a reputable european seller (specialized in Leica) and is coming home probably tomorrow or Wednesday.
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