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Do You Know the Reciprocal Rule of Shutter Speeds?

Chris Gampat
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09/07/2015
09/07/2015
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Last Updated on 09/07/2015 by Chris Gampat

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There is a great way to get more stable images without worrying about image stabilization from your lens or camera: it’s called the reciprocal rule of shutter speeds. SLR Lounge recently published a video all about it, which is after the jump.

The reciprocal rule of shutter speeds states that:

  • In order to achieve a stable image that is devoid of camera shake, you must shoot at a shutter speed that is the reciprocal of the minimum of the field of view.
  • What does that mean? If you’re using a 100mm lens on a full frame 35mm sensor/film body, then you need to shoot at at least 1/100th to produce an image that contains no camera shake when shooting handheld.
  • If you’re shooting with a 100mm lens on an APS-C sensor that has a 1.5x crop factor, then you need to shoot at 1/150th at a minimum. Here, the crop factor is taking into consideration.
  • If you’re shooting with a 100mm lens on an APS-C sensor that has a 1.6x crop factor, then you need to shoot at 1/160th at a minimum. Here the crop factor is also taken into consideration.
  • Micro Four Thirds shooters need to shoot with a 100mm lens at a minimum of 1/200th because of the crop factor.

The SLR Lounge video below visually demonstrates this idea.

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camera field of view focal length lens Reciprocal Rule of Shutter Speeds SLR Lounge video
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Chris Gampat is the Editor in Chief, Founder, and Publisher of the Phoblographer. He provides oversight to all of the daily tasks, including editorial, administrative, and advertising work. Chris's editorial work includes not only editing and scheduling articles but also writing them himself. He's the author of various product guides, educational pieces, product reviews, and interviews with photographers. He's fascinated by how photographers create, considering the fact that he's legally blind./ HIGHLIGHTS: Chris used to work in Men's lifestyle and tech. He's a veteran technology writer, editor, and reviewer with more than 15 years experience. He's also a Photographer that has had his share of bylines and viral projects like "Secret Order of the Slice." PAST BYLINES: Gear Patrol, PC Mag, Geek.com, Digital Photo Pro, Resource Magazine, Yahoo! News, Yahoo! Finance, IGN, PDN, and others. EXPERIENCE: Chris Gampat began working in tech and art journalism both in 2008. He started at PCMag, Magnum Photos, and Geek.com. He founded the Phoblographer in 2009 after working at places like PDN and Photography Bay. He left his day job as the Social Media Content Developer at B&H Photo in the early 2010s. Since then, he's evolved as a publisher using AI ethically, coming up with ethical ways to bring in affiliate income, and preaching the word of diversity in the photo industry. His background and work has spread to non-profits like American Photographic Arts where he's done work to get photographers various benefits. His skills are in SEO, app development, content planning, ethics management, photography, Wordpress, and other things. EDUCATION: Chris graduated Magna Cum Laude from Adelphi University with a degree in Communications in Journalism in 2009. Since then, he's learned and adapted to various things in the fields of social media, SEO, app development, e-commerce development, HTML, etc. FAVORITE SUBJECT TO PHOTOGRAPH: Chris enjoys creating conceptual work that makes people stare at his photos. But he doesn't get to do much of this because of the high demand of photography content. / BEST PHOTOGRAPHY TIP: Don't do it in post-production when you can do it in-camera.
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