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  #281  
Vecchio 30-10-2005, 19.00.29
Timothy Kroesen
 
Messaggi: n/a
Predefinito Re: First Trip to Italy

Bur NO one knows what effect flash will have over Years of repeated
exposure; hence what ' reasonable conservationist' in charge should take
the risk? Apparently few if any will; so there...

Tim K

"Jack Campin - bogus address" <bogus@purr.demon.co.uk> wrote in message
news:bogus-0FC93C.22401728102005@news.news.demon.net...[color=blue][color=green][color=darkred]
> >> Not quite - the total illumination a typical flash gives to its[/color][/color][/color]
subject[color=blue][color=green][color=darkred]
> >> is only as much as direct sunlight would for 1/60 second, but the[/color][/color][/color]
flash[color=blue][color=green][color=darkred]
> >> lasts for only about 1/30,000 second; the illumination is very[/color][/color][/color]
briefly[color=blue][color=green][color=darkred]
> >> very much more intense than sunlight. But not intense enough to[/color][/color][/color]
lead[color=blue][color=green][color=darkred]
> >> to any non-linear effects, it's only the total amount of light used[/color][/color][/color]
in[color=blue][color=green][color=darkred]
> >> taking the photo that matters.[/color]
> > I don't think the light from a flash is "more intense than[/color][/color]
sunlight".[color=blue][color=green]
> > If you took a flash picture, do you think someone 93 million miles
> > away would see the flash?[/color]
>
> I phrased that very carefully. The intensity (energy input per
> square metre) of the light falling on the subject during a camera
> flash at a photographically useful distance is about 1000 times
> greater than the intensity of direct sunlight falling on it.
>
> It still won't fade the picture.
>
> ============== j-c ====== @ ====== purr . demon . co . uk[/color]
==============[color=blue]
> Jack Campin: 11 Third St, Newtongrange EH22 4PU, Scotland | tel 0131[/color]
660 4760[color=blue]
> <http://www.purr.demon.co.uk/jack/> for CD-ROMs and free | fax 0870[/color]
0554 975[color=blue]
> stuff: Scottish music, food intolerance, & Mac logic fonts | mob 07800[/color]
739 557

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  #282  
Vecchio 30-10-2005, 19.00.29
Timothy Kroesen
 
Messaggi: n/a
Predefinito Re: First Trip to Italy

Bur NO one knows what effect flash will have over Years of repeated
exposure; hence what ' reasonable conservationist' in charge should take
the risk? Apparently few if any will; so there...

Tim K

"Jack Campin - bogus address" <bogus@purr.demon.co.uk> wrote in message
news:bogus-0FC93C.22401728102005@news.news.demon.net...[color=blue][color=green][color=darkred]
> >> Not quite - the total illumination a typical flash gives to its[/color][/color][/color]
subject[color=blue][color=green][color=darkred]
> >> is only as much as direct sunlight would for 1/60 second, but the[/color][/color][/color]
flash[color=blue][color=green][color=darkred]
> >> lasts for only about 1/30,000 second; the illumination is very[/color][/color][/color]
briefly[color=blue][color=green][color=darkred]
> >> very much more intense than sunlight. But not intense enough to[/color][/color][/color]
lead[color=blue][color=green][color=darkred]
> >> to any non-linear effects, it's only the total amount of light used[/color][/color][/color]
in[color=blue][color=green][color=darkred]
> >> taking the photo that matters.[/color]
> > I don't think the light from a flash is "more intense than[/color][/color]
sunlight".[color=blue][color=green]
> > If you took a flash picture, do you think someone 93 million miles
> > away would see the flash?[/color]
>
> I phrased that very carefully. The intensity (energy input per
> square metre) of the light falling on the subject during a camera
> flash at a photographically useful distance is about 1000 times
> greater than the intensity of direct sunlight falling on it.
>
> It still won't fade the picture.
>
> ============== j-c ====== @ ====== purr . demon . co . uk[/color]
==============[color=blue]
> Jack Campin: 11 Third St, Newtongrange EH22 4PU, Scotland | tel 0131[/color]
660 4760[color=blue]
> <http://www.purr.demon.co.uk/jack/> for CD-ROMs and free | fax 0870[/color]
0554 975[color=blue]
> stuff: Scottish music, food intolerance, & Mac logic fonts | mob 07800[/color]
739 557

Rispondi citando Condividi su facebook
  #283  
Vecchio 30-10-2005, 19.00.29
Timothy Kroesen
 
Messaggi: n/a
Predefinito Re: First Trip to Italy

Bur NO one knows what effect flash will have over Years of repeated
exposure; hence what ' reasonable conservationist' in charge should take
the risk? Apparently few if any will; so there...

Tim K

"Jack Campin - bogus address" <bogus@purr.demon.co.uk> wrote in message
news:bogus-0FC93C.22401728102005@news.news.demon.net...[color=blue][color=green][color=darkred]
> >> Not quite - the total illumination a typical flash gives to its[/color][/color][/color]
subject[color=blue][color=green][color=darkred]
> >> is only as much as direct sunlight would for 1/60 second, but the[/color][/color][/color]
flash[color=blue][color=green][color=darkred]
> >> lasts for only about 1/30,000 second; the illumination is very[/color][/color][/color]
briefly[color=blue][color=green][color=darkred]
> >> very much more intense than sunlight. But not intense enough to[/color][/color][/color]
lead[color=blue][color=green][color=darkred]
> >> to any non-linear effects, it's only the total amount of light used[/color][/color][/color]
in[color=blue][color=green][color=darkred]
> >> taking the photo that matters.[/color]
> > I don't think the light from a flash is "more intense than[/color][/color]
sunlight".[color=blue][color=green]
> > If you took a flash picture, do you think someone 93 million miles
> > away would see the flash?[/color]
>
> I phrased that very carefully. The intensity (energy input per
> square metre) of the light falling on the subject during a camera
> flash at a photographically useful distance is about 1000 times
> greater than the intensity of direct sunlight falling on it.
>
> It still won't fade the picture.
>
> ============== j-c ====== @ ====== purr . demon . co . uk[/color]
==============[color=blue]
> Jack Campin: 11 Third St, Newtongrange EH22 4PU, Scotland | tel 0131[/color]
660 4760[color=blue]
> <http://www.purr.demon.co.uk/jack/> for CD-ROMs and free | fax 0870[/color]
0554 975[color=blue]
> stuff: Scottish music, food intolerance, & Mac logic fonts | mob 07800[/color]
739 557

Rispondi citando Condividi su facebook
  #284  
Vecchio 30-10-2005, 19.00.29
Timothy Kroesen
 
Messaggi: n/a
Predefinito Re: First Trip to Italy

Bur NO one knows what effect flash will have over Years of repeated
exposure; hence what ' reasonable conservationist' in charge should take
the risk? Apparently few if any will; so there...

Tim K

"Jack Campin - bogus address" <bogus@purr.demon.co.uk> wrote in message
news:bogus-0FC93C.22401728102005@news.news.demon.net...[color=blue][color=green][color=darkred]
> >> Not quite - the total illumination a typical flash gives to its[/color][/color][/color]
subject[color=blue][color=green][color=darkred]
> >> is only as much as direct sunlight would for 1/60 second, but the[/color][/color][/color]
flash[color=blue][color=green][color=darkred]
> >> lasts for only about 1/30,000 second; the illumination is very[/color][/color][/color]
briefly[color=blue][color=green][color=darkred]
> >> very much more intense than sunlight. But not intense enough to[/color][/color][/color]
lead[color=blue][color=green][color=darkred]
> >> to any non-linear effects, it's only the total amount of light used[/color][/color][/color]
in[color=blue][color=green][color=darkred]
> >> taking the photo that matters.[/color]
> > I don't think the light from a flash is "more intense than[/color][/color]
sunlight".[color=blue][color=green]
> > If you took a flash picture, do you think someone 93 million miles
> > away would see the flash?[/color]
>
> I phrased that very carefully. The intensity (energy input per
> square metre) of the light falling on the subject during a camera
> flash at a photographically useful distance is about 1000 times
> greater than the intensity of direct sunlight falling on it.
>
> It still won't fade the picture.
>
> ============== j-c ====== @ ====== purr . demon . co . uk[/color]
==============[color=blue]
> Jack Campin: 11 Third St, Newtongrange EH22 4PU, Scotland | tel 0131[/color]
660 4760[color=blue]
> <http://www.purr.demon.co.uk/jack/> for CD-ROMs and free | fax 0870[/color]
0554 975[color=blue]
> stuff: Scottish music, food intolerance, & Mac logic fonts | mob 07800[/color]
739 557

Rispondi citando Condividi su facebook
  #285  
Vecchio 30-10-2005, 19.00.29
Timothy Kroesen
 
Messaggi: n/a
Predefinito Re: First Trip to Italy

Bur NO one knows what effect flash will have over Years of repeated
exposure; hence what ' reasonable conservationist' in charge should take
the risk? Apparently few if any will; so there...

Tim K

"Jack Campin - bogus address" <bogus@purr.demon.co.uk> wrote in message
news:bogus-0FC93C.22401728102005@news.news.demon.net...[color=blue][color=green][color=darkred]
> >> Not quite - the total illumination a typical flash gives to its[/color][/color][/color]
subject[color=blue][color=green][color=darkred]
> >> is only as much as direct sunlight would for 1/60 second, but the[/color][/color][/color]
flash[color=blue][color=green][color=darkred]
> >> lasts for only about 1/30,000 second; the illumination is very[/color][/color][/color]
briefly[color=blue][color=green][color=darkred]
> >> very much more intense than sunlight. But not intense enough to[/color][/color][/color]
lead[color=blue][color=green][color=darkred]
> >> to any non-linear effects, it's only the total amount of light used[/color][/color][/color]
in[color=blue][color=green][color=darkred]
> >> taking the photo that matters.[/color]
> > I don't think the light from a flash is "more intense than[/color][/color]
sunlight".[color=blue][color=green]
> > If you took a flash picture, do you think someone 93 million miles
> > away would see the flash?[/color]
>
> I phrased that very carefully. The intensity (energy input per
> square metre) of the light falling on the subject during a camera
> flash at a photographically useful distance is about 1000 times
> greater than the intensity of direct sunlight falling on it.
>
> It still won't fade the picture.
>
> ============== j-c ====== @ ====== purr . demon . co . uk[/color]
==============[color=blue]
> Jack Campin: 11 Third St, Newtongrange EH22 4PU, Scotland | tel 0131[/color]
660 4760[color=blue]
> <http://www.purr.demon.co.uk/jack/> for CD-ROMs and free | fax 0870[/color]
0554 975[color=blue]
> stuff: Scottish music, food intolerance, & Mac logic fonts | mob 07800[/color]
739 557

Rispondi citando Condividi su facebook
  #286  
Vecchio 30-10-2005, 19.00.29
Timothy Kroesen
 
Messaggi: n/a
Predefinito Re: First Trip to Italy

Bur NO one knows what effect flash will have over Years of repeated
exposure; hence what ' reasonable conservationist' in charge should take
the risk? Apparently few if any will; so there...

Tim K

"Jack Campin - bogus address" <bogus@purr.demon.co.uk> wrote in message
news:bogus-0FC93C.22401728102005@news.news.demon.net...[color=blue][color=green][color=darkred]
> >> Not quite - the total illumination a typical flash gives to its[/color][/color][/color]
subject[color=blue][color=green][color=darkred]
> >> is only as much as direct sunlight would for 1/60 second, but the[/color][/color][/color]
flash[color=blue][color=green][color=darkred]
> >> lasts for only about 1/30,000 second; the illumination is very[/color][/color][/color]
briefly[color=blue][color=green][color=darkred]
> >> very much more intense than sunlight. But not intense enough to[/color][/color][/color]
lead[color=blue][color=green][color=darkred]
> >> to any non-linear effects, it's only the total amount of light used[/color][/color][/color]
in[color=blue][color=green][color=darkred]
> >> taking the photo that matters.[/color]
> > I don't think the light from a flash is "more intense than[/color][/color]
sunlight".[color=blue][color=green]
> > If you took a flash picture, do you think someone 93 million miles
> > away would see the flash?[/color]
>
> I phrased that very carefully. The intensity (energy input per
> square metre) of the light falling on the subject during a camera
> flash at a photographically useful distance is about 1000 times
> greater than the intensity of direct sunlight falling on it.
>
> It still won't fade the picture.
>
> ============== j-c ====== @ ====== purr . demon . co . uk[/color]
==============[color=blue]
> Jack Campin: 11 Third St, Newtongrange EH22 4PU, Scotland | tel 0131[/color]
660 4760[color=blue]
> <http://www.purr.demon.co.uk/jack/> for CD-ROMs and free | fax 0870[/color]
0554 975[color=blue]
> stuff: Scottish music, food intolerance, & Mac logic fonts | mob 07800[/color]
739 557

Rispondi citando Condividi su facebook
  #287  
Vecchio 30-10-2005, 19.00.29
Timothy Kroesen
 
Messaggi: n/a
Predefinito Re: First Trip to Italy

Bur NO one knows what effect flash will have over Years of repeated
exposure; hence what ' reasonable conservationist' in charge should take
the risk? Apparently few if any will; so there...

Tim K

"Jack Campin - bogus address" <bogus@purr.demon.co.uk> wrote in message
news:bogus-0FC93C.22401728102005@news.news.demon.net...[color=blue][color=green][color=darkred]
> >> Not quite - the total illumination a typical flash gives to its[/color][/color][/color]
subject[color=blue][color=green][color=darkred]
> >> is only as much as direct sunlight would for 1/60 second, but the[/color][/color][/color]
flash[color=blue][color=green][color=darkred]
> >> lasts for only about 1/30,000 second; the illumination is very[/color][/color][/color]
briefly[color=blue][color=green][color=darkred]
> >> very much more intense than sunlight. But not intense enough to[/color][/color][/color]
lead[color=blue][color=green][color=darkred]
> >> to any non-linear effects, it's only the total amount of light used[/color][/color][/color]
in[color=blue][color=green][color=darkred]
> >> taking the photo that matters.[/color]
> > I don't think the light from a flash is "more intense than[/color][/color]
sunlight".[color=blue][color=green]
> > If you took a flash picture, do you think someone 93 million miles
> > away would see the flash?[/color]
>
> I phrased that very carefully. The intensity (energy input per
> square metre) of the light falling on the subject during a camera
> flash at a photographically useful distance is about 1000 times
> greater than the intensity of direct sunlight falling on it.
>
> It still won't fade the picture.
>
> ============== j-c ====== @ ====== purr . demon . co . uk[/color]
==============[color=blue]
> Jack Campin: 11 Third St, Newtongrange EH22 4PU, Scotland | tel 0131[/color]
660 4760[color=blue]
> <http://www.purr.demon.co.uk/jack/> for CD-ROMs and free | fax 0870[/color]
0554 975[color=blue]
> stuff: Scottish music, food intolerance, & Mac logic fonts | mob 07800[/color]
739 557

Rispondi citando Condividi su facebook
  #288  
Vecchio 30-10-2005, 19.00.29
Timothy Kroesen
 
Messaggi: n/a
Predefinito Re: First Trip to Italy

Bur NO one knows what effect flash will have over Years of repeated
exposure; hence what ' reasonable conservationist' in charge should take
the risk? Apparently few if any will; so there...

Tim K

"Jack Campin - bogus address" <bogus@purr.demon.co.uk> wrote in message
news:bogus-0FC93C.22401728102005@news.news.demon.net...[color=blue][color=green][color=darkred]
> >> Not quite - the total illumination a typical flash gives to its[/color][/color][/color]
subject[color=blue][color=green][color=darkred]
> >> is only as much as direct sunlight would for 1/60 second, but the[/color][/color][/color]
flash[color=blue][color=green][color=darkred]
> >> lasts for only about 1/30,000 second; the illumination is very[/color][/color][/color]
briefly[color=blue][color=green][color=darkred]
> >> very much more intense than sunlight. But not intense enough to[/color][/color][/color]
lead[color=blue][color=green][color=darkred]
> >> to any non-linear effects, it's only the total amount of light used[/color][/color][/color]
in[color=blue][color=green][color=darkred]
> >> taking the photo that matters.[/color]
> > I don't think the light from a flash is "more intense than[/color][/color]
sunlight".[color=blue][color=green]
> > If you took a flash picture, do you think someone 93 million miles
> > away would see the flash?[/color]
>
> I phrased that very carefully. The intensity (energy input per
> square metre) of the light falling on the subject during a camera
> flash at a photographically useful distance is about 1000 times
> greater than the intensity of direct sunlight falling on it.
>
> It still won't fade the picture.
>
> ============== j-c ====== @ ====== purr . demon . co . uk[/color]
==============[color=blue]
> Jack Campin: 11 Third St, Newtongrange EH22 4PU, Scotland | tel 0131[/color]
660 4760[color=blue]
> <http://www.purr.demon.co.uk/jack/> for CD-ROMs and free | fax 0870[/color]
0554 975[color=blue]
> stuff: Scottish music, food intolerance, & Mac logic fonts | mob 07800[/color]
739 557

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