RE: Flashing before or after exposure...

As I see it, it is additive no matter which way you go. I would imagine that an exposure could decrease the threshold in certain areas, then a post flashing could trigger these grain clusters. Testing is the only way to know for sure, but since I do not have a densitometer I would need to yield this to someone with the proper equipment. I am going to guess that one will not be able to tell the difference through observation, just as I am not able to tell the difference between a "perfect" pinhole and one that is slightly too large or small.

When I get a chance I will see if the above is correct. I have a decent supply of Panalure and will be testing some of this anyway.

Cheers -

george

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 --- On Wed 11/17, Loris Medici < loris_medici@mynet.com > wrote:
From: Loris Medici [mailto: loris_medici@mynet.com]
To: pinhole-discussion@spitbite.org
Date: Wed, 17 Nov 2004 15:45:48 +0200
Subject: [pinhole-discussion] Flashing before or after exposure...

My understanding is:<br><br>Pre-exposure will decrease the treshold of silver grains; that way they<br>are more easily triggered in exposure so they're able to form an image<br>later in the development stage. Post-exposure will only intensify<br>already triggered grains, will not affect the non-triggered grains<br>(because the treshold was high at the time of real exposure). Therefore,<br>results of pre or post flashing should be different.<br><br>What do you think?<br><br>Loris.<br><br>> -----Original Message-----<br>> From: owner-pinhole-discussion@spitbite.org <br>> [mailto:owner-pinhole-discussion@spitbite.org] On Behalf Of <br>> Earl and Patty Johnson<br>> Sent: Wednesday, November 17, 2004 2:30 PM<br>> To: pinhole-discussion@spitbite.org<br>> Subject: Re[2]: [pinhole-discussion] Re: <br>> pinhole-discussion-digest V1 #179<br>> <br>> <br>> ... I agree with George that <br>> post-exposure flashing should yield the same result as <br>> pre-exposure flashing.<br>> ...<br><br>_______________________________
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Received on Wed Nov 17 06:27:29 2004