RE: Flashing before or after exposure...

Eric -

You are probably talking about Beyond The Zone System by Phil Davis (he gave me the second professional lens he ever bought when I was starting out). I have not made the device - it is on my "someday I will have time to do this" list. <g>

Cheers -

george

-----
http://www.GLSmyth.com
http://DRiPInvesting.org

 --- On Wed 11/17, Eric < eric@landguard-manor1.demon.co.uk > wrote:
From: Eric [mailto: eric@landguard-manor1.demon.co.uk]
To: pinhole-discussion@spitbite.org
Date: Wed, 17 Nov 2004 17:06:07 -0000
Subject: RE: [pinhole-discussion] Flashing before or after exposure...

George,<br>You do not need a densitometer; you can use an exposure meter, as out lined<br>in a book I got out from the library[some time ago]. Admittedly this was for<br>negatives using an enlarger if you are interested will get details, and mail<br>them to you <br>Cheers <br>Eric M <br><br>-----Original Message-----<br>From: owner-pinhole-discussion@spitbite.org<br>[mailto:owner-pinhole-discussion@spitbite.org] On Behalf Of George L Smyth<br>Sent: 17 November 2004 14:27<br>To: pinhole-discussion@spitbite.org<br>Subject: RE: [pinhole-discussion] Flashing before or after exposure...<br><br><br>As I see it, it is additive no matter which way you go. I would imagine<br>that an exposure could decrease the threshold in certain areas, then a post<br>flashing could trigger these grain clusters. Testing is the only way to<br>know for sure, but since I do not have a densitometer I would need to yield<br>this to someone with the proper equipment. I am going to guess that one<br>will not be able to tell the differ
ence through observation, just as I am<br>not able to tell the difference between a "perfect" pinhole and one that is<br>slightly too large or small.<br><br>When I get a chance I will see if the above is correct. I have a decent<br>supply of Panalure and will be testing some of this anyway.<br><br>Cheers -<br><br>george<br><br>-----<br>http://www.GLSmyth.com<br>http://DRiPInvesting.org<br><br> --- On Wed 11/17, Loris Medici < loris_medici_at_mynet.com > wrote:<br>From: Loris Medici [mailto: loris_medici_at_mynet.com]<br>To: pinhole-discussion_at_spitbite.org<br>Date: Wed, 17 Nov 2004 15:45:48 +0200<br>Subject: [pinhole-discussion] Flashing before or after exposure...<br><br>My understanding is:<br><br>Pre-exposure will decrease the treshold of<br>silver grains; that way they<br>are more easily triggered in exposure so<br>they're able to form an image<br>later in the development stage.<br>Post-exposure will only intensify<br>already triggered grains, will not<br>affect the non-triggered grains<br>(because the treshol
d was high at the<br>time of real exposure). Therefore,<br>results of pre or post flashing should<br>be different.<br><br>What do you think?<br><br>Loris.<br><br>> -----Original<br>Message-----<br>> From: owner-pinhole-discussion_at_spitbite.org <br>><br>[mailto:owner-pinhole-discussion_at_spitbite.org] On Behalf Of <br>> Earl and<br>Patty Johnson<br>> Sent: Wednesday, November 17, 2004 2:30 PM<br>> To:<br>pinhole-discussion_at_spitbite.org<br>> Subject: Re[2]: [pinhole-discussion]<br>Re: <br>> pinhole-discussion-digest V1 #179<br>> <br>> <br>> ... I agree<br>with George that <br>> post-exposure flashing should yield the same result<br>as <br>> pre-exposure flashing.<br>> ...<br><br!<br>>_______________________________________________<br>Post to the list as<br>PLAIN TEXT only - no HTML<br>pinhole-discussion mailing<br>list<br>pinhole-discussion_at_spitbite.org<br>FAQ at<br>http://spitbite.org/pinhole-discussion/list.html<br><br><br>_______________________________________________<br>No banners. No pop-ups. No kidding.<br
>Make My Way your home on the Web - http://www.myway.com<br>_______________________________________________<br>Post to the list as PLAIN TEXT only - no HTML<br>pinhole-discussion mailing list<br>pinhole-discussion_at_spitbite.org<br>FAQ at http://spitbite.org/pinhole-discussion/list.html<br><br><br>_______________________________________________<br>Post to the list as PLAIN TEXT only - no HTML<br>pinhole-discussion mailing list<br>pinhole-discussion_at_spitbite.org<br>FAQ at http://spitbite.org/pinhole-discussion/list.html<br>

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Received on Wed Nov 17 10:14:39 2004