I agree that we all differ to some extent. But the human visual system
does not differ dramatically from person to person. "about 53 degrees"
does not mean "53 degrees +/- 20"
Chuck Norcutt
On 5/9/2011 6:40 PM, Bill Pearce wrote:
> it works depending on your vision. Some see wider than others.
>
> -----Original Message-----
> From: Chuck Norcutt
> Sent: Monday, May 09, 2011 4:28 PM
> To: Olympus Camera Discussion
> Subject: Re: [OM] Definition of "Normal" (Re: panasonic 20mm am I mad)
>
> No, I disagree. It's not totally arbitrary. Reference the definition I
> posted the other day from the Wiki article on "normal lens".
> ------------------------------------------------------------
> "A lens with a focal length about equal to the diagonal size of the film
> or sensor format is known as a normal lens; its angle of view is similar
> to the angle subtended by a large-enough print viewed at a typical
> viewing distance equal to the print diagonal;[2] this angle of view is
> about 53° diagonally."
> ------------------------------------------------------------
> Note the relationship to a print viewed at normal reading distance.
> Whether you like or prefer it or not is not the question. It does have
> some rationale.
>
> Chuck Norcutt
>
>
> On 5/9/2011 5:10 PM, Bill Pearce wrote:
>> A standard definition, but why? It's just arbitrary. I always found a 50
>> on
>> 35mm to be a little tight. Over my years I have come to use a 28 as my
>> standard.
>>
>> -----Original Message-----
>> From: Chuck Norcutt
>> Sent: Monday, May 09, 2011 1:24 PM
>> To: Olympus Camera Discussion
>> Subject: Re: [OM] Definition of "Normal" (Re: panasonic 20mm am I mad)
>>
>> A lens of focal length equal to the diagonal of the film or sensor.
>>
>> Chuck Norcutt
>>
>>
>> On 5/9/2011 9:00 AM, Fernando Gonzalez Gentile wrote:
>>> This topic was discussed some 3 years ago ... it's time to revisit it,
>>> Me too, I've forgotten the definition of what a 'normal' lens is ;-)
>>>
>>> Fernando.
>>>
>>> On Mon, May 9, 2011 at 9:26 AM, George Themelis<george@xxxxxxxxx>
>>> wrote:
>>>
>>>>
>>>> All this does is to match the "focal length" of the viewing system. It
>>>> says
>>>> nothing about what normal is.
>>>>
>>>> George
>>>>
>>>> --
--
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