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Otto Piechowski
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Reged: 09/20/05

Loc: Lexington, KY
Human Vision and Magnification new
      #6264401 - 12/20/13 08:17 PM

Is unaided human vision 0X (a magnification of zero) or 1X (a magnification of 1)?

Otto


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PeterR280
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Reged: 05/27/13

Re: Human Vision and Magnification new [Re: Otto Piechowski]
      #6264427 - 12/20/13 08:34 PM

0 if you use a logarithmic scale, 1 if you use an arithmetic scale.

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Rick Woods
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Reged: 01/27/05

Loc: Inner Solar System
Re: Human Vision and Magnification new [Re: PeterR280]
      #6264510 - 12/20/13 09:37 PM

It seems like they'd be the same thing.

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GlennLeDrew
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Reged: 06/18/08

Loc: Ottawa, Ontario, Canada
Re: Human Vision and Magnification new [Re: Rick Woods]
      #6264759 - 12/21/13 02:24 AM

Unity. It's only less or more when using auxiliary optics.

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PeterR280
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Re: Human Vision and Magnification new [Re: GlennLeDrew]
      #6265139 - 12/21/13 11:18 AM

I've read that the human eye roughly corresponds to a 50mm lens on a 35mm sized sensor.

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GlennLeDrew
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Re: Human Vision and Magnification new [Re: PeterR280]
      #6265172 - 12/21/13 11:52 AM

That would be like wearing blinders! A 50mm lens on a 36mm wide sensor has a field of view of just 40 degrees. Our eyes in the horizontal approach 180 degrees (with the bridge of the nose imposing a blockage.)

The oft stated 'equivalence' of the 50mm lens with the eye can only apply for a very limited set of defined conditions.


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PeterR280
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Re: Human Vision and Magnification [Re: GlennLeDrew]
      #6265185 - 12/21/13 12:04 PM

Peripheral vision is something else. Our ability to discern detail is very much more limited.

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