Bob W. wrote:
> So what? During the Renaissance and later some painters used optical
> devices, lenses etc. to help them with their painting. We know this
> because some of them, and some other Renaissance people, wrote about
> it and even painted it. It was no secret.
Bob,
chill off, take a de
hen.
>
> --
> Bob
>
>
>> -Original Message-
>> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
>> Behalf Of Lasse Karlsson
>> Sent: 30 January 2008 09:37
>> To: Pentax-Discuss Mail List
>> Subject: For the experts. Determening distances in a p
>
> > > Actually, this maybe of interest to some people on this list.
> > > Charlie falco who is a physicist, together with an artist
> > > David Hockney
> > > did a research where they used optical distortions to
demonstrate
> > > that some Renaissance era drawing were made by tracing images
> >
Wed Jan 30 16:27:24 EST 2008
Bob W wrote:
> > Actually, this maybe of interest to some people on this list.
> > Charlie falco who is a physicist, together with an artist
> > David Hockney
> > did a research where they used optical distortions to demonstrate
> > that some Renaissance era drawing
IL PROTECTED] On
> Behalf Of Lasse Karlsson
> Sent: 30 January 2008 09:37
> To: Pentax-Discuss Mail List
> Subject: For the experts. Determening distances in a photograph.
>
> Hi all,
>
> I'm doing some research on the earliest constructions of my
hometown,
> Mariehamn
ey and others make such a fuss about it.
--
Bob
> -Original Message-
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
> Behalf Of Igor Roshchin
> Sent: 30 January 2008 19:00
> To: PDML@pdml.net
> Subject: Re: For the experts. Determening distances in a photogra
Small addition: if you would attempt this, the direction of your camera
*will* matter to get the correct perspective match with the old picture.
The center of the old picture should be the same as the center of the
new picture!
Groeten,
Vic
Vic Mortelmans wrote:
> If you could pin down the e
I just checked it's -15° -30°F if you take wind chill into account...
Paul Sorenson wrote:
> Where the current temperature is -16°F
>
>
>
>> Rick Womer wrote:
>>
>>
> > He's in Fargo, ND, poor bastard!
>
>>
>>
>
>
>
--
I am personally a member of the Cream of the Illuminat
Yep, that's obvious.
The authors go much further than that.
Take a look at the first two articles - it is rather interesting.
(You can skip the math if it bothers you ;-) ).
Also, a brief (and rather dry) summary is available on Wikipedia:
http://en.wikipedia.org/wiki/Hockney-Falco_thesis
Igor
The original camera was a darkened room with a lens and an artist
drawing on the wall opposite the lens.
Camera does mean chamber, as in room, in Latin.
Igor Roshchin wrote:
> Lasse,
>
> Yes, your problem may be solvable.
> Sorry, I wouldn't have time and energy now to help you solving your
> pr
Where the current temperature is -16°F
> Rick Womer wrote:
>
> He's in Fargo, ND, poor bastard!
>
>
>
--
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the direction
Lasse,
Yes, your problem may be solvable.
Sorry, I wouldn't have time and energy now to help you solving your
problem now.
However, you may want to take a look at the articles
posted on Charles Falco's website (in the "scientific papers" area):
http://www.optics.arizona.edu/ssd/FAQ.html
While a
Rick Womer wrote:
>Maybe a surveyor would know. Dave Brooks, are you
>there?
Dave's not here!
He's in Fargo, ND, poor bastard!
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Maybe a surveyor would know. Dave Brooks, are you
there?
--- Lasse Karlsson <[EMAIL PROTECTED]> wrote:
> Hi all,
>
> I'm doing some research on the earliest
> constructions of my hometown,
> Mariehamn.
>
> At the link below there is one very early photograph
> of the town, from
> around 1870.
Maybe a surveyor would know. Dave Brooks, are you
there?
--- Lasse Karlsson <[EMAIL PROTECTED]> wrote:
> Hi all,
>
> I'm doing some research on the earliest
> constructions of my hometown,
> Mariehamn.
>
> At the link below there is one very early photograph
> of the town, from
> around 1870.
You really need to know a couple of things, the more or less exact
location from which the image was captured, exactly what the format of
the image was, (which should relatively easy if you have an uncut
original since prints were usually contact printed), but your assumption
is wrong on focal
Or you could maybe try to overlay it with a grid in the same perspective
as the scene. I tried something like this:
http://users.pandora.be/vicmortelmans/tmp/6894839-lg.jpg
But I don't think the perspective is correct...
Groeten,
Vic
Lasse Karlsson wrote:
> Hi all,
>
> I'm doing some research
If you could pin down the exact location where the photographer was
taking this picture, you could take a new picture of the current
situation, and by layering the old picture on the new, you can at least
find out where the old buildings were as compared to the current situation.
I don't think
Are some of the buildings still standing? If so, I would measure one
existing building that appears in the rear of the photo and one in
the front. That would give you a scale and a perspective ratio.
Someone else may have a better idea.
Paul
On Jan 30, 2008, at 4:37 AM, Lasse Karlsson wrote:
ot; <[EMAIL PROTECTED]>
> Date: 2008/01/30 Wed AM 09:37:20 GMT
> To: "Pentax-Discuss Mail List"
> Subject: For the experts. Determening distances in a photograph.
>
> Hi all,
>
> I'm doing some research on the earliest constructions of my hometow
Hi all,
I'm doing some research on the earliest constructions of my hometown,
Mariehamn.
At the link below there is one very early photograph of the town, from
around 1870. In it there are still a number of houses, farms, of the village
where the town was founded in 1861. I'm trying to establi
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