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Forum: Pentax SLR Lens Discussion 07-02-2015, 08:52 AM  
Fixed aperture lens question
Posted By JinDesu
Replies: 14
Views: 1,616
A fixed aperture zoom lens refers to the construction allowing the lens to maintain the large F2.8 (or whatever) aperture even as you zoom the lens. It does not mean you are stuck with only F2.8, you can certainly stop down to F4, F5.6, F8, F11, etc.
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