Comments on: Why Do You Need A Fast Lens And What Is It? https://www.apnphotographyschool.com/concepts/why-do-you-need-a-fast-lens-and-what-is-it/?utm_source=rss&utm_medium=rss&utm_campaign=why-do-you-need-a-fast-lens-and-what-is-it Shivanand Sharma's photography blog Sat, 15 Mar 2014 12:57:44 +0000 hourly 1 https://wordpress.org/?v=6.8.2 By: Shivanand Sharma https://www.apnphotographyschool.com/concepts/why-do-you-need-a-fast-lens-and-what-is-it/comment-page-1/#comment-34001 Thu, 28 Jun 2012 12:36:27 +0000 https://www.apnphotographyschool.com/?p=10581#comment-34001 In reply to Sam Cox.

Hi Sam, This is not true for fast lenses, though cameras may have trouble focusing in dark.

]]> By: Sam Cox https://www.apnphotographyschool.com/concepts/why-do-you-need-a-fast-lens-and-what-is-it/comment-page-1/#comment-33999 Thu, 28 Jun 2012 12:33:34 +0000 https://www.apnphotographyschool.com/?p=10581#comment-33999 Do fast lenses help a camera’s auto-focusing system by letting more light reach the focus plane? I guess this would be true only if cameras focused with the aperture wide open.

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