Fixed lens aperture changing

Started Apr 15, 2013 | Questions thread
mike clemens Regular Member • Posts: 118
Re: Fixed lens aperture changing

> There is no such thing as a "fixed aperture" lens

There is. It refers to a lens like the Canon 70-200mm f/2.8 zoom. The f/2.8 aperture is available at all focal lengths. This is the "fixed" aperture. In a zoom like 28-135 f/3.5-f/4.5 the aperture is not fixed, and can change as you zoom.

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