Why not a 12-35 F1.8 - F2.8?

Started Apr 2, 2014 | Discussions thread
Fredrik Glckner Veteran Member • Posts: 3,678

I think it comes down to conservatism. People who buy the high end zoom lenses expect that they have a constant aperture.

While I am certainly not an expert in lens design, I think that making the lens so that it had an aperture of f/2 in the wide end would not make it a lot more expensive or heavy. But the market for lenses like this expects a constant aperture. A variable max aperture is often viewed as a poor solution.

Personally, I think the lens should have been made with specifications like, e.g., 12-45mm f/2.5-3.5, which could probably have been done at approx the same size and price point. But this deviates from the "traditional" specifications of a pro standard zoom lens.


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