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HUAWEI Mate 50 Pro has a camera lens with variable aperture by Jose Antunes - ProVideo Coalition
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World's first Pinhole Lens with a variable aperture brings a retro touch to your modern camera - Yanko Design
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Zoom Lens Maximum Aperture: Fixed and Variable Apertures | Nikon
Variable vs Fixed Aperture Lenses-What's the Big Difference? - YouTube
Product Photography, Part 6: Selecting a Lens - Practical Ecommerce
Photography 101: The difference between fixed and variable aperture - Photofocus
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