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Forums Lobby GET TO KNOW YOUR CAMERA & MASTER IT Nikon D5300/D5200/D5100/D5000/D3300/D3200/D3100/D3000 (Public) topic #7805
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Subject: "RE: Standard f-Stops" Previous topic | Next topic
Broadway Bob Gold Member Donor Ribbon awarded for his generous support to the Fundraising Campaign 2014warded for Nikonian since 16th Mar 2009Thu 21-Mar-13 01:02 AM
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#7. "RE: Standard f-Stops"
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Groveland, US
          

Another factor to consider is the equation which includes the focal length of the lens: lens focal length/diameter of the aperture = f-stop. The f-stop number is a convenient way of describing the exposure settings rather than noting the area of the aperture. And, a given f-stop produces the same exposure regardless of the lens focal length (for a given shutter speed). For example, 1/500th of a second at f/5.6 on a 50mm lens gives the same exposure as those settings on a 300mm lens.

This becomes obvious if you think about an exposure meter - it only gives shutter speed and aperture regardless of the lens or camera type.

Bob

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A general, generic topicStandard f-Stops [View all] , dperry23 , Sun 10-Mar-13 05:24 AM
 
Subject Author Message Date ID
Reply message RE: Standard f-Stops
briantilley Moderator Deep knowledge of bodies and lens; high level photography skills
10th Mar 2013
1
Reply message RE: Standard f-Stops
dperry23
10th Mar 2013
2
     Reply message RE: Standard f-Stops
briantilley Moderator Deep knowledge of bodies and lens; high level photography skills
10th Mar 2013
3
Reply message RE: Standard f-Stops
jrp Administrator JRP is one of the co-founders, has in-depth knowledge in various areas. Awarded for his contributions for the Resources
10th Mar 2013
4
Reply message RE: Standard f-Stops
Digital_Reality
20th Mar 2013
5
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JosephK Silver Member Fellow Ribbon awarded for his excellent and frequent contributions and sharing his in-depth knowledge and experience with the community in the Nikonians spirit.
21st Mar 2013
6
          Reply message RE: Standard f-Stops
Broadway Bob Gold Member Donor Ribbon awarded for his generous support to the Fundraising Campaign 2014warded for
21st Mar 2013
7

Forums Lobby GET TO KNOW YOUR CAMERA & MASTER IT Nikon D5300/D5200/D5100/D5000/D3300/D3200/D3100/D3000 (Public) topic #7805 Previous topic | Next topic