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Why do they say the human eye is like a 50mm prime?

Started Apr 13, 2010 | Discussion thread

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info333

Regular Member • Posts: 271

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Why do they say the human eye is like a 50mm prime?

Apr 13, 2010

Why do people compare the human eye to a 50mm lens? Is it because the world looks similarly sized through a viewfinder with a 50mm lens? Surely this is due to the magnification of the viewfinder prism, not the lens.

So why do people compare our eyes to 50mm lenses? My eyes see a much wider field of view than 50mm, so I'm confused. Anyone know more about this confusing topic? Thanks

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Post (hide subjects)	Posted by	When
Why do they say the human eye is like a 50mm prime?	info333	Apr 13, 2010
I think it's because....	Patrick T. Kelly	Apr 13, 2010
Re: Why do they say the human eye is like a 50mm prime?	DjD_a700	Apr 13, 2010
the human eye is like a 50mm prime and here's why	WoodMaven	Apr 13, 2010
Re: the human eye is like a 50mm prime and here's why	info333	Apr 13, 2010
Re: the human eye is like a 50mm prime and here's why	info333	Apr 13, 2010
Re: the human eye is like a 50mm prime and here's why	WoodMaven	Apr 13, 2010
Re: the human eye is like a 50mm prime and here's why	Barrie Davis	Apr 13, 2010
Re: the human eye is like a 50mm prime and here's why	Johan Borg	Apr 13, 2010
Re: the human eye is like a 50mm prime and here's why	WoodMaven	Apr 13, 2010
Re: the human eye is like a 50mm prime and here's why	Johan Borg	Apr 13, 2010
Re: the human eye is like a 50mm prime and here's why	info333	Apr 13, 2010
Re: the human eye is like a 50mm prime and here's why	WoodMaven	Apr 13, 2010
Re: the human eye is like a 50mm prime and here's why	richardplondon	Apr 13, 2010
Re: the human eye is like a 50mm prime and here's why	DjD_a700	Apr 13, 2010
Re: the human eye is like a 50mm prime and here's why	info333	Apr 13, 2010
Huh? It most certainly isn't all in focus.	wedouglas	Apr 13, 2010
Re: Huh? It most certainly isn't all in focus.	info333	Apr 13, 2010
Re: Huh? It most certainly isn't all in focus.	wedouglas	Apr 13, 2010
Re: Huh? It most certainly isn't all in focus.	Barrie Davis	Apr 13, 2010
Re: the human eye is like a 50mm prime and here's why	lensman57	Apr 13, 2010
Re: the human eye is like a 50mm prime and here's why	Peter Norvig	Apr 14, 2010
So, you consider a fisheye a normal lens?? heheh n/t	Russell Ervin	Apr 14, 2010
More normal than a 50, YEAH! hehe	Barrie Davis	Apr 14, 2010
Re: More normal than a 50, YEAH! hehe	info333	Apr 14, 2010
You can't really compare the two	GeorgeD200	Apr 14, 2010
Re: You can't really compare the two	info333	Apr 14, 2010
Re: You can't really compare the two	Barrie Davis	Apr 14, 2010
Standard lens	jezsik	Apr 13, 2010
Re: Standard lens	info333	Apr 13, 2010
Lens and prints are two separate things	jezsik	Apr 13, 2010
Re: Lens and prints are two separate things	Johan Borg	Apr 13, 2010
Re: Lens and prints are two separate things	info333	Apr 13, 2010
Dumb reasoning?	jezsik	Apr 13, 2010
Wait ... what?	jezsik	Apr 13, 2010
Re: Wait ... what?	Johan Borg	Apr 13, 2010
What is this viewfinder magnification of which you speak?	jezsik	Apr 13, 2010
Re: What is this viewfinder magnification of which you speak?	Barrie Davis	Apr 13, 2010
Re: What is this viewfinder magnification of which you speak?	jezsik	Apr 14, 2010
Re: What is this viewfinder magnification of which you speak?	Barrie Davis	Apr 14, 2010
Re: What is this viewfinder magnification of which you speak?	Johan Borg	Apr 13, 2010
No contradiction at all	jezsik	Apr 14, 2010
Re: No contradiction at all	Johan Borg	Apr 14, 2010
Re: No contradiction at all	Barrie Davis	Apr 14, 2010
Re: No contradiction at all	info333	Apr 14, 2010
Re: No contradiction at all	Barrie Davis	Apr 14, 2010
50mm is 50mm is 50mm?	jezsik	Apr 14, 2010
Re: 50mm is 50mm is 50mm?	info333	Apr 14, 2010
Then explain this:	jezsik	Apr 14, 2010
Re: Then explain this:	info333	Apr 14, 2010
Re: Then explain this:	Barrie Davis	Apr 14, 2010
Re: Then explain this:	Brian D. Schneider	Apr 14, 2010
Re: 50mm is 50mm is 50mm?	info333	Apr 14, 2010
Re: What is this viewfinder magnification of which you speak?	info333	Apr 13, 2010
Re: What is this viewfinder magnification of which you speak?	WoodMaven	Apr 13, 2010
Re: What is this viewfinder magnification of which you speak?	info333	Apr 13, 2010
Re: What is this viewfinder magnification of which you speak?	jezsik	Apr 14, 2010
Re: Wait ... what?	richardplondon	Apr 13, 2010
Re: Wait ... what?	WoodMaven	Apr 13, 2010
Re: Wait ... what?	richardplondon	Apr 13, 2010
Due emphasis to Richard Plondon's point..	Barrie Davis	Apr 14, 2010
OT: Plondon	richardplondon	Apr 14, 2010
Re: OT: Plondon	Barrie Davis	Apr 14, 2010
Re: OT: Plondon	richardplondon	Apr 14, 2010
Re: OT: Plondon	Barrie Davis	Apr 14, 2010
Yes. You have it.	Pete_CSCS	Apr 13, 2010
well, this isn't so cut and dried	tex	Apr 13, 2010
Re: Why do they say the human eye is like a 50mm prime?	Johan Borg	Apr 13, 2010
Re: Why do they say the human eye is like a 50mm prime?	GaryDeM	Apr 13, 2010
Re: Why do they say the human eye is like a 50mm prime?	info333	Apr 13, 2010
Re: Why do they say the human eye is like a 50mm prime?	Pedagydusz	Apr 13, 2010
just a Goldilocks story?	richardplondon	Apr 13, 2010
Re: Why do they say the human eye is like a 50mm prime?	GaryDeM	Apr 13, 2010
Re: Why do they say the human eye is like a 50mm prime?	Johan Borg	Apr 13, 2010
Re: Why do they say the human eye is like a 50mm prime?	Barrie Davis	Apr 13, 2010
Re: Why do they say the human eye is like a 50mm prime?	GaryDeM	Apr 13, 2010
Re: Why do they say the human eye is like a 50mm prime?	info333	Apr 13, 2010
Re: Why do they say the human eye is like a 50mm prime?	WoodMaven	Apr 14, 2010
Re: Why do they say the human eye is like a 50mm prime?	info333	Apr 14, 2010
Re: Why do they say the human eye is like a 50mm prime?	WoodMaven	Apr 14, 2010
Re: Why do they say the human eye is like a 50mm prime?	info333	Apr 14, 2010
Re: Why do they say the human eye is like a 50mm prime?	info333	Apr 14, 2010
Re: Why do they say the human eye is like a 50mm prime?	Barrie Davis	Apr 14, 2010
50mm is just another one of those enduring falacies...	Barrie Davis	Apr 13, 2010
Re: 50mm is just another one of those enduring falacies...	info333	Apr 13, 2010
Re: 50mm is just another one of those enduring falacies...	Pedagydusz	Apr 13, 2010
Re: 50mm is just another one of those enduring falacies...	Brian D. Schneider	Apr 13, 2010
Re: 50mm is just another one of those enduring falacies...	Frank LoPriore	Apr 14, 2010
Re: 50mm is just another one of those enduring falacies...	ljfinger	Apr 14, 2010
Re: 50mm is just another one of those enduring falacies...	info333	Apr 14, 2010
Re: 50mm is just another one of those enduring falacies...	info333	Apr 14, 2010
Re: 50mm is just another one of those enduring falacies...	Frank LoPriore	Apr 15, 2010
Re: 50mm is just another one of those enduring falacies...	Frank LoPriore	Apr 15, 2010
Re: 50mm is just another one of those enduring falacies...	ljfinger	Apr 15, 2010
Re: 50mm is just another one of those enduring falacies...	Frank LoPriore	Apr 15, 2010
Re: 50mm is just another one of those enduring falacies...	ljfinger	Apr 15, 2010
Re: 50mm is just another one of those enduring falacies...	Frank LoPriore	Apr 15, 2010
Re: 50mm is just another one of those enduring falacies...	info333	Apr 15, 2010
Re: 50mm is just another one of those enduring falacies...	flakin stephen	Apr 13, 2010
Re: 50mm is just another one of those enduring falacies...	Barrie Davis	Apr 14, 2010
Re: 50mm is just another one of those enduring falacies...	flakin stephen	Apr 14, 2010
Re: 50mm is just another one of those enduring falacies...	ljfinger	Apr 14, 2010
Re: 50mm is just another one of those enduring falacies...	Barrie Davis	Apr 14, 2010
Re: 50mm is just another one of those enduring falacies...	ljfinger	Apr 14, 2010
One more try at explaining the simple experiment.	WoodMaven	Apr 13, 2010
Re: One more try at explaining the simple experiment.	richardplondon	Apr 13, 2010
Re: Why do they say the human eye is like a 50mm prime?	LeRentier	Apr 13, 2010
Re: Why do they say the human eye is like a 50mm prime?	sdyue	Apr 13, 2010
Re: "They" don't	Craig Gillette	Apr 13, 2010
Re: "They" don't	info333	Apr 13, 2010
Re: "They" don't	Craig Gillette	Apr 13, 2010
Re:	info333	Apr 13, 2010
focal length is also important	jrtrent	Apr 14, 2010
Re: focal length is also important	info333	Apr 14, 2010
Re: focal length is also important	jrtrent	Apr 14, 2010
Re: focal length is also important	Johan Borg	Apr 14, 2010
Re: focal length is also important	info333	Apr 14, 2010
the essence of the argument	jrtrent	Apr 14, 2010
Re: the essence of the argument	info333	Apr 14, 2010
Re: the essence of the argument	jrtrent	Apr 14, 2010
Re: the essence of the argument	Barrie Davis	Apr 15, 2010
Perspective = art + science	richardplondon	Apr 15, 2010
Re: Perspective = art + science	Barrie Davis	Apr 15, 2010
Re: Perspective = art + science	info333	Apr 15, 2010
Re: the essence of the argument	info333	Apr 15, 2010
Re: focal length is also important	Barrie Davis	Apr 14, 2010
Re:	Barrie Davis	Apr 14, 2010
Re: "They" don't	info333	Apr 13, 2010
Try the negative/slide experiment - no eyepiece involved.	WoodMaven	Apr 13, 2010
Re: Try the negative/slide experiment - no eyepiece involved.	info333	Apr 13, 2010
Re: Try the negative/slide experiment - no eyepiece involved.	info333	Apr 13, 2010
Re: Try the negative/slide experiment - no eyepiece involved.	WoodMaven	Apr 13, 2010
Re: Try the negative/slide experiment - no eyepiece involved.	info333	Apr 13, 2010
Re: Try the negative/slide experiment - no eyepiece involved.	info333	Apr 14, 2010
Re: Try the negative/slide experiment - no eyepiece involved.	Johan Borg	Apr 13, 2010
Re: Why do they say the human eye is like a 50mm prime?	DjD_a700	Apr 14, 2010
Re: Why do they say the human eye is like a 50mm prime?	tjboothe	Apr 14, 2010
Re: Why do they say the human eye is like a 50mm prime?	richardplondon	Apr 14, 2010
"they" dont say the human eye is like a 50mm prime	Dave_K	Apr 14, 2010
Re: "they" dont say the human eye is like a 50mm prime	info333	Apr 14, 2010
Re:	dimi	Apr 14, 2010
Re: "they" dont say the human eye is like a 50mm prime	Barrie Davis	Apr 14, 2010
Re: "they" dont say the human eye is like a 50mm prime	richardplondon	Apr 14, 2010
Normal perspective	BorisK1	Apr 14, 2010
Re: Normal perspective	info333	Apr 14, 2010
Re: Normal perspective	Barrie Davis	Apr 14, 2010
Re: Normal perspective	BorisK1	Apr 14, 2010
Ignorance, mostly	ljfinger	Apr 14, 2010
Re: Ignorance, mostly	Barry Fitzgerald	Apr 14, 2010
Re: Ignorance, mostly	ljfinger	Apr 14, 2010

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