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Nikon DSLR Cameras
D3100
Question on 18-55 mm kit lens
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<blockquote data-quote="BackdoorArts" data-source="post: 118828" data-attributes="member: 9240"><p>Lens apertures are given in a way that allows you to assess their "brightness" - how much light will be let through in their maximum setting. All of them are adjustable from there to limit light, but you cannot adjust them beyond that to allow for more light. With less light (smaller aperture - higher number) comes more depth of field. </p><p></p><p>Prime lenses will have a fixed maximum (like a 50mm f1.8) while zooms may have a fixed or variable maximum. The 18-55mm gets "darker" as you zoom in, so at 18mm you can achieve f3.5, but at 55mm you can only achieve f5.6. This is because the lens elements move and change the light characteristics.</p><p></p><p>Here's a decent overview on what aperture is and how it works. <a href="http://photographylife.com/what-is-aperture-in-photography" target="_blank">Understanding Aperture - A Beginner's Guide</a></p></blockquote><p></p>
[QUOTE="BackdoorArts, post: 118828, member: 9240"] Lens apertures are given in a way that allows you to assess their "brightness" - how much light will be let through in their maximum setting. All of them are adjustable from there to limit light, but you cannot adjust them beyond that to allow for more light. With less light (smaller aperture - higher number) comes more depth of field. Prime lenses will have a fixed maximum (like a 50mm f1.8) while zooms may have a fixed or variable maximum. The 18-55mm gets "darker" as you zoom in, so at 18mm you can achieve f3.5, but at 55mm you can only achieve f5.6. This is because the lens elements move and change the light characteristics. Here's a decent overview on what aperture is and how it works. [URL="http://photographylife.com/what-is-aperture-in-photography"]Understanding Aperture - A Beginner's Guide[/URL] [/QUOTE]
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Nikon DSLR Cameras
D3100
Question on 18-55 mm kit lens
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