Film Pre-Exposure?

"Mike King" wrote in message ...
Press photographers used to "shoot the sky" to effect this. Exposure should
be around 4-5 stops less than middle gray (obviously you need to test this
procedure).

I also have plans somewhere for a camera mod using grain of wheat lamps to
preflash film in roll cameras, one of the cameras modified was a M-3.

Gives a real 1-2 stop boost in shadow detail.


Utter bull****. It's just fog.

On 5/14/2004 8:42 AM Michael Scarpitti spake thus:

"Mike King" wrote in message
...

Press photographers used to "shoot the sky" to effect this. Exposure
should be around 4-5 stops less than middle gray (obviously you need to
test this procedure).

I also have plans somewhere for a camera mod using grain of wheat lamps
to preflash film in roll cameras, one of the cameras modified was a M-3.

Gives a real 1-2 stop boost in shadow detail.

Utter bull****. It's just fog.

Admit it; you just don't like it because Ansel Adams did it.


--
I was quickly apprised that an "RSS feed" was not, as I had naively
imagined, some new and unspeakable form of sexual debauchery practised
by young persons of dubious morality, but a way of providing news
articles to the cybernetic publishing moguls of the World Wide Wait so
they can fill the airwaves with even more useless drivel.

- Cynical shop talk from comp.publish.prepress

David Nebenzahl wrote in message ...
On 5/14/2004 8:42 AM Michael Scarpitti spake thus:

"Mike King" wrote in message
...

Press photographers used to "shoot the sky" to effect this. Exposure
should be around 4-5 stops less than middle gray (obviously you need to
test this procedure).

I also have plans somewhere for a camera mod using grain of wheat lamps
to preflash film in roll cameras, one of the cameras modified was a M-3.

Gives a real 1-2 stop boost in shadow detail.

Utter bull****. It's just fog.

Admit it; you just don't like it because Ansel Adams did it.

I have no knowledge that Adams did it or didn't do it, nor could I
care less. It's a stupid technique that ruins shadow separation.

Michael Scarpitti wrote:
David Nebenzahl wrote in message ...

On 5/14/2004 8:42 AM Michael Scarpitti spake thus:

"Mike King" wrote in message
...

Press photographers used to "shoot the sky" to effect this. Exposure
should be around 4-5 stops less than middle gray (obviously you need to
test this procedure).

I also have plans somewhere for a camera mod using grain of wheat lamps
to preflash film in roll cameras, one of the cameras modified was a M-3.

Gives a real 1-2 stop boost in shadow detail.

Utter bull****. It's just fog.

Admit it; you just don't like it because Ansel Adams did it.


I have no knowledge that Adams did it or didn't do it, nor could I
care less. It's a stupid technique that ruins shadow separation.


That is strange. At 1:09 PM of 5/12/04 you responded to my post of
11:12 PM of 5/11/04 in which I referred you to two books of Adams and
two pictures of his illustrating the technique. Did you not read the
post to which you replied?


Francis A. Miniter

Francis A. Miniter wrote:

That is strange. At 1:09 PM of 5/12/04 you responded to my post of
11:12 PM of 5/11/04 in which I referred you to two books of Adams and
two pictures of his illustrating the technique. Did you not read the
post to which you replied?

"Never try to teach a pig to sing. It wastes your time and annoys the
pig." -- Robert A. Heinlein, in the voice of Lazarus Long.

"Never wrestle with a pig. You both get dirty and the pig enjoys it."
-- unknown, possibly Teddy Roosevelt

--
I may be a scwewy wabbit, but I'm not going to Alcatwaz!
-- E. J. Fudd, 1954

Donald Qualls, aka The Silent Observer
Lathe Building Pages http://silent1.home.netcom.com/HomebuiltLathe.htm
Speedway 7x12 Lathe Pages http://silent1.home.netcom.com/my7x12.htm

Opinions expressed are my own -- take them for what they're worth
and don't expect them to be perfect.

On 5/15/2004 6:13 PM Donald Qualls spake thus:

Francis A. Miniter wrote:

That is strange. At 1:09 PM of 5/12/04 you responded to my post of
11:12 PM of 5/11/04 in which I referred you to two books of Adams and
two pictures of his illustrating the technique. Did you not read the
post to which you replied?

"Never try to teach a pig to sing. It wastes your time and annoys the
pig." -- Robert A. Heinlein, in the voice of Lazarus Long.

"Never wrestle with a pig. You both get dirty and the pig enjoys it."
-- unknown, possibly Teddy Roosevelt

Time for a song:

'Twas the pig fair last September, the day I well remember,
I was walking up and down in drunken pride,
When my knees began to flutter, as I sank down in the gutter,
And a pig came up and lay down by my side.

As I sat there in the gutter, thinking thoughts I could not utter,
I thought I heard a passing lady say,
"You can tell the man who boozes by the company he chooses",
And with that the pig got up and walked away.


--
I was quickly apprised that an "RSS feed" was not, as I had naively
imagined, some new and unspeakable form of sexual debauchery practised
by young persons of dubious morality, but a way of providing news
articles to the cybernetic publishing moguls of the World Wide Wait so
they can fill the airwaves with even more useless drivel.

- Cynical shop talk from comp.publish.prepress

"Francis A. Miniter" wrote in message ...
Michael Scarpitti wrote:
David Nebenzahl wrote in message ...

On 5/14/2004 8:42 AM Michael Scarpitti spake thus:

"Mike King" wrote in message
...

Press photographers used to "shoot the sky" to effect this. Exposure
should be around 4-5 stops less than middle gray (obviously you need to
test this procedure).

I also have plans somewhere for a camera mod using grain of wheat lamps
to preflash film in roll cameras, one of the cameras modified was a M-3.

Gives a real 1-2 stop boost in shadow detail.

Utter bull****. It's just fog.

Admit it; you just don't like it because Ansel Adams did it.


I have no knowledge that Adams did it or didn't do it, nor could I
care less. It's a stupid technique that ruins shadow separation.


That is strange. At 1:09 PM of 5/12/04 you responded to my post of
11:12 PM of 5/11/04 in which I referred you to two books of Adams and
two pictures of his illustrating the technique. Did you not read the
post to which you replied?

OK, prior to that post I HAD no knowledge of this technique being used
by Adams, and in any event it does not matter what Adams did or didn't
do. Adams was not an emulsion scientist, but I have a book by an
emulsion scientist that explains in detail what can be done with
latensification, which is a very low-level exposure to light used to
offset reciprocity failure, and to keep the latent image from fading,
on film used for long exposures, such as those made in astronomy. 'The
Science of Photography' by Baines, revised by Bomback, cotains an
extensive discussion of this on pages 199-208.

If you can cite a better authority, do so.

This technique has NOTHING to do with 'flash' exposures that are being
discussed here, which contribute NOTHING to the negative that cannot
be effected better in other ways. Fog is fog is fog.





Francis A. Miniter

(Stefan Kahlert) wrote in message . com...
(Michael Scarpitti) wrote in message . com...
(Dan Quinn) wrote in message om...

The problem, as I have stated, is the effect it has on shadow values.

Lowering contrast in the shadows will produce a favourable negative if
used on the right subject. Example:
http://www.photoportale.de/pp/pp_public.php?action=userpicture&series=338&pictur e=3&user=75

Stefan

Could you explain exactly what you did on this image? Equipment, film, etc?

"Donald Qualls" wrote

"Never try to teach a pig to sing. It wastes your time and annoys the
pig." -- Robert A. Heinlein, in the voice of Lazarus Long.

"Never wrestle with a pig. You both get dirty and the pig enjoys it."
-- unknown, possibly Teddy Roosevelt

"Never argue with an idiot. Observers will have trouble telling the
difference."

--
Nicholas O. Lindan, Cleveland, Ohio
Consulting Engineer: Electronics; Informatics; Photonics.
Remove spaces etc. to reply: n o lindan at net com dot com
psst.. want to buy an f-stop timer? nolindan.com/da/fstop/

"Nicholas O. Lindan" wrote in message link.net...
"Donald Qualls" wrote

"Never try to teach a pig to sing. It wastes your time and annoys the
pig." -- Robert A. Heinlein, in the voice of Lazarus Long.

"Never wrestle with a pig. You both get dirty and the pig enjoys it."
-- unknown, possibly Teddy Roosevelt

"Never argue with an idiot. Observers will have trouble telling the
difference."

Never argue with a zonehead. They don't realize how stupid they are.
They just go to their 'holy books' and quote Adams, chapter and verse.
What difference is there between zoneheads and religious zealots?
NONE.