Volume 2 of my book

Photo Engineer

Subscriber
Joined
Apr 19, 2005
Messages
29,018
Location
Rochester, NY
Format
Multi Format
As many of you know, I have been a bit under the weather lately, so I have been spending my time working on a possible volume 2 to my book on Photographic Emulsion Making and Coating. I'm not sure of the details yet, but so far, I have written up from notes:

1. A Chloride T-Grain Formula
2. An Ammonia digest K-Grain
3. A cubic bromide
4. A graded Iodide high speed emulsion.

I'm working with Mark Osterman and Nick Brandreth on this, and they will share in authorship. They have contributed a lot and have more to contribute (but they don't know that yet.... heh, heh, heh).

So, I sit here with graphs and charts for about 6 hours per day and wonder what else you guys might want to hear about.

Please let me know here in this thread. If I have something you want, or can get it, I'll include it. But then, there may not be enough audience for a volume 2. IDK. Let me know that as well, those of you who have read VI.

Thanks.

PE
 
OP
OP

Photo Engineer

Subscriber
Joined
Apr 19, 2005
Messages
29,018
Location
Rochester, NY
Format
Multi Format
That should be V I.

And if that is the type of post I'm going to get, my desire to write goes down.

PE
 

cmacd123

Subscriber
Joined
May 24, 2007
Messages
4,312
Location
Stittsville, Ontario
Format
35mm
The APUG group is a tough to please audience. There are many of us who would be glad to have a way to adsorb your insight at this technology that we use.

Please continue, what were the headings of your first book for comparison and where is it distributed.
 
OP
OP

Photo Engineer

Subscriber
Joined
Apr 19, 2005
Messages
29,018
Location
Rochester, NY
Format
Multi Format
Charles, there are ads at the top and bottom of the APUG screens that take you to the distributors. The headings were posted here on APUG a long time ago. I would have to hunt them up and repost them. The headings for the new book are incomplete but roughly follow those of the first book but with much more detail and many more (and modern) formulas.

I am presently working on my notes for the graded core shell 9+% iodide emulsion but I have a bit done on the coating and making sections that have nothing to do with this. I am also presenting the data in a new way using Windows panels for the data.

PE
 

ME Super

Member
Joined
Apr 17, 2011
Messages
1,479
Location
Central Illinois, USA
Format
Multi Format
A T-grain emulsion? Very cool. Now what about color? No, seriously, I know color can be incredibly complex, but is there a way to do color that, while maybe not of the quality level that Kodak/Fuji/Agfa do, might be attainable for the home emulsion maker/coater?

I may just be dreaming, but if so, I may as well dream big, right?
 
OP
OP

Photo Engineer

Subscriber
Joined
Apr 19, 2005
Messages
29,018
Location
Rochester, NY
Format
Multi Format
I have said before that color is very difficult and it is hard to get chromogenic couplers and then incorporate them.

There are 2 ways to approach this, one is dye bleach like Cibachrome, and the other is like the old Agfa method. I have demonstrated and posted the first type, but I have been unable to locate the chemistry for the second method. Regarding the first type, I made a magenta single layer here at home. I followed a model that I used to coat a full multilayer at Kodak so it should work.

PE
 

Francesco_from_Rome

Member
Joined
Aug 27, 2014
Messages
90
Location
Rome
Format
Multi Format

The T grain and the high speed emulsion promise to be really interesting!

Francesco
 

RalphLambrecht

Subscriber
Joined
Sep 19, 2003
Messages
14,649
Location
K,Germany
Format
Medium Format

quick and dirty contact print emulsion for a highschool project.
 

Richard Man

Member
Joined
Sep 24, 2005
Messages
1,301
Format
Multi Format
Any wisdom for the analogue process would be welcome! Please go for it!
 
OP
OP

Photo Engineer

Subscriber
Joined
Apr 19, 2005
Messages
29,018
Location
Rochester, NY
Format
Multi Format
Fred, this was a fast component of a negative film when the kinks were ironed out. I just finished writing up the introductory parts for this emulsion, but I have the rest of it cut and pasted.

Ralph, that is already in book 1 and we have been teaching it for nearly 10 years. It is an Azo/Lupex hybrid that can be made in 3 contrast grades in 4 hours and then coated and tested. So, it is a one day project if you are working with a small body of students.

Ratty, that was no insult. I took it as a joke due to my typo. I'll never get to volume VI.

PE
 

Bill Burk

Subscriber
Joined
Feb 9, 2010
Messages
9,301
Format
4x5 Format
Have you written about different substrates? I recall a post where we discussed Polaroid's 3000 speed film and you mentioned that coating a film emulsion on paper can effectively double its emulsion speed.
 

RattyMouse

Member
Joined
Oct 18, 2011
Messages
6,045
Location
Ann Arbor, Mi
Format
Multi Format

Good to hear PE. From your post it sounded like some one dissed you, with the result you didn't feel like writing anymore. Sorry for my mistake.
 
OP
OP

Photo Engineer

Subscriber
Joined
Apr 19, 2005
Messages
29,018
Location
Rochester, NY
Format
Multi Format
Bill Burk said:
Have you written about different substrates? I recall a post where we discussed Polaroid's 3000 speed film and you mentioned that coating a film emulsion on paper can effectively double its emulsion speed.
Click to expand...

I have addressed it here and in the book, but basically a reflective surface behind an emulsion can reflect light to the extent that the speed goes up by 1 stop. In addition, the lower dmax then moves the image curve to the left which appears to gain more speed.

Ratty, yeah, it is hard to convey feelings in words just the right way and that is why I used the emoticon.

PE
 

falotico

Member
Joined
Aug 31, 2012
Messages
265
Format
35mm
Sign me up to buy a copy of whatever you publish for Volume II. I think your work is an extremely valuable contribution to the science and technology of emulsion manufacture. Your expertise can even point out the mistakes in previous books, how else could we correct the past record? Much of this knowledge is tied up in proprietary rights and I respect your ability to describe useful and fundamental techniques while still protecting the rights of other experts and organizations. This requires work of a very professional level and many people appreciate the example that you set, apart from the insight and value of the technology which is described.
 

Prof_Pixel

Member
Joined
Feb 17, 2012
Messages
1,917
Location
Penfield, NY
Format
35mm
Bill Burk said:
you mentioned that coating a film emulsion on paper can effectively double its emulsion speed.
Click to expand...

I suspect that's because the emulsion gets two shots at the light - going in and then comping back out after being reflected from the white paper base.
 

Simon R Galley

Member
Joined
Nov 2, 2005
Messages
2,034
Location
Cheshire UK
Format
Medium Format
Photo Engineer / Photo Hero and enlightened teacher:

Simon ILFORD Photo / HARMAN technology Limited :
 

Bill Burk

Subscriber
Joined
Feb 9, 2010
Messages
9,301
Format
4x5 Format

Thanks,

I know you are writing about everything there is to know - the state of the art.

Some of it is new, some of it is old, some promising techniques were disregarded but might be interesting now.

The reflective speed increase for instance, may have been impractical before, but is interesting now thanks to (non-APUG hybrid) new supporting technology.

As I read Mees, I may get more ideas. My initial reaction to Mees is, what have we learned since and how much was already known.
 
You must log in or register to reply here.
Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…