135mm is always my favourite focal length. During Contax days though it is a difficult choice for me to choose between 135/2.8 Sonnar, 135/2 Planar and 100/2.8 Makro Planar, if I can only bring one of them with me. Now Zeiss has the 135/2 Apo Sonnar in Classic ZF and Milvus series. The Classic ZF series has the solid mechanical feel, but the Milvus is modern looking, weather proof and has a nice De-click feature for video shooting.
Interestingly the 135/2 Apo Sonnar has a very close focusing distance first time I see in Zeiss lenses, up to a close distance of 0.8m, closer to all the 135mm I have used for Praktica, Rolleiflex and Contax.
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Rolleiflex 3003, SL2000F - SONY Alpha7R 1/2/4. A1
Carl Zeiss C/Y T* - QBM HFT - ZM T* - ZF T* - Batis T* - Otus T* - Loxia T*
Sony. Zeiss 16-35/4 T* G200600 GM100400 GM600
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