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Forums > Back > Aperture Reading
JJ_SO
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#3
10-19-2013, 11:17 AM
Focus on infinity, then you'll have your f/2.8

 

Focus closer means focal length increases - but maximum front lens diameter doesn't. f (focal length) divided by 2.8 is 53.6mm lens diameter, more or less. That is, why apertures are correctly written as f/x.

 

 

So, all what's happening is your camera (Nikon?) is giving you the correct aperture to calculate manual flash lights or other light sources for macro shots.

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Messages In This Thread
Aperture Reading - by borisbg - 10-19-2013, 07:47 AM
Aperture Reading - by Rainer - 10-19-2013, 08:21 AM
Aperture Reading - by JJ_SO - 10-19-2013, 11:17 AM
Aperture Reading - by borisbg - 10-19-2013, 03:02 PM
Aperture Reading - by Brightcolours - 10-19-2013, 03:21 PM
Aperture Reading - by borisbg - 10-19-2013, 03:21 PM
Aperture Reading - by Brightcolours - 10-19-2013, 03:29 PM
Aperture Reading - by borisbg - 10-19-2013, 03:46 PM
Aperture Reading - by borisbg - 10-19-2013, 04:40 PM
Aperture Reading - by Brightcolours - 10-19-2013, 05:08 PM
Aperture Reading - by borisbg - 10-19-2013, 06:50 PM

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