Contax 28-85, 35-135, Canon 24-70, 24-105, which one should I choose?

Walking through the Mamiya era mainly depends on your level. If you are at an advanced level, I still recommend Canon's 24-70. I have been using manual heads for a long time. The Zeiss heads G45 and 28-85 during the CONTAX period are both models in the history of human optics. The 28-85 is a Sonnar structure. But the structure is better than many current Tiansai structures, and the imaging is also unstoppable, but if it is not as good as the level just mentioned, it is simply useless. I have been using this head for a year and a half. It is difficult to use and has a low film yield, but it can really take good pictures. The colors are the most gorgeous I have ever seen and the closest to the PS level. The Hasselblad laboratory's rating is not the same. Just to put it bluntly, it inherits the essence of the real Zeiss, without anti-shake, purely manual, and with a large diameter of 85mm. I have used products from my friend Canon, a toothpaste factory, 6D and 5D3. I don’t know whether the 24-70 you are talking about is the first generation or the second generation. Anyway, it is very Japanese. The Japanese color style is a different feeling. You can only Experience it yourself. Good films are related to many things, including CMOS, algorithms, lenses, and lens structures. After reading many of the comments above, I feel they are very one-sided and I also want to say something, did Cartier-Bresson use autofocus? Does the LEICA used by many photography masters have automatic focus? Many Phase One machines are still manual. So it depends on how you want to play and what level you want to play at.

If you really want to improve yourself, it is recommended to buy 28-35. If you don’t want to be too tired, go for 24-70