Progress

Photo Engineer

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I continue to make progress in emulsion making, but hesitate to post anything for fear that it might be interpreted as a promotion for my workshops. I will stop right here and ask for advice as to what to post and where. (Sean and moderators, comments appreciated)

I can add though that in-line with my previous post today on another thread,... Well, if you are all so interested in preserveing conventional photography and fear its demise, why are you not doing more to learn how to preserve it?

When it vanishes, it will be gone! I assure you of that fact.

PE
 

David A. Goldfarb

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Post away. I'm interested.

As far as promoting one's workshops on the forum in general, we've been fairly easygoing about this when it's been a case of a regular participant in the forums who announces the occasional workshop, like Cheryl Jacobs or Aggie, as long as it doesn't become abusive. The concern is about drive-by posters who just come to APUG to flog their workshop or forum or product or magazine or whatever and don't contribute anything else, either as regular participants or as sponsors. As I see it, you've got nothing to worry about in this regard.
 
OP
OP

Photo Engineer

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Thanks David, but you can see that I'm sensitized to this sort of self-promotion. I am getting together a package to post, but am not sure as to how or whether.

PE
 

John Bartley

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PE,

I've been reading these posts of yours and find them very interesting. I wish I could contribute, but I can't due to lack of knowledge. Please keep posting.

cheers
 

RichSBV

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PE,

I know many people really do appreciate your work and postings here. I love to hear about your progress.

But please understand that many folks simply can't afford the time for a workshop. I wish I could, and yours would be the first! I would love to do my own emulsions. Time is harder to come by than money...

Also understand that most people do not post at all. And many don't post in some forums unless they really feel compelled. Every time I post on APUG I get nothing but negativity, rants and arguements. Why bother? The art of discussion is long gone, especially if you have a differing opinion from the ruling class...

Please continue your work and keep us posted. People may not respond on-line, but they are reading and interested!
 

Jorge

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I would like to see what progress you have made!
 

David A. Goldfarb

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Photo Engineer said:
Thanks David, but you can see that I'm sensitized to this sort of self-promotion. I am getting together a package to post, but am not sure as to how or whether.

PE
Click to expand...

If you (or anyone for that matter) have any doubts about whether something is appropriate or not for the forum, then send Sean a PM or click on the "contact us" link at the bottom of the page, and run it by him. Alternately, if your main interest is just keeping the commercial stuff out of the forums, then post the emulsion discussion in the forums, and advertise the commercial part in the Classifieds (if say, you wanted to do something like offer a discount on a product to participants in a workshop).
 

jd callow

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PE,
You would have to go a long way, before you could be called out for shameless self promotion.

Consider an article (see side bar at left) or an ongoing thread that could be a 'blog' of your efforts. Both could be used as the basis of a larger publication such as, personal web page (that could also be a gateway to your WSs), 'white paper', ebook, or traditional publication.

Many here are interested in your opinions and efforts and would think it a loss if you were not posting. I know that I have been hit with requests to try and get you to the APUG Conference, but have been too busy to figure out the logistics internally or pursue it properly with you.
 

kwmullet

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Photo Engineer said:
Thanks David, but you can see that I'm sensitized to this sort of self-promotion. [...]
PE
Click to expand...

PE, you say you're sensitized, but are you emulsified as well?
 

alien

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I want to hear about this, as it is interesting stuff from someone who knows what he is talking about!!

Ansgar
 

Sean

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No problems here, and I look forward to whatever you can contribute. Thanks!
 

Struan Gray

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PE: I find your posts fascinating and inspiring in equal measure. Please keep them coming.

My experience with reviving lapsed technology is that the problems lie not with gummed up machinery or badly-written manuals, but in the lack of a chain of practical experience. The key person is not the whizz-bang inventor or the head of the lab, but the grizzled technician who knows which lever to coax with a lump hammer and which to let well alone, which roller needs re-seating on alternate Tuesdays and which grease to use on the irreplacable gasket to keep it supple. In my mind's eye you are that technician. Hats off.
 
OP
OP

Photo Engineer

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Rich;

You are always welcome to stop by for a demo!

Bring a negative and you are welcome to coat your own paper and make your own print!

PE
 
OP
OP

Photo Engineer

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Ok, here goes. Here is an AgBr emulsion, doped and then spectrally sensitized. I have since reduced the fog. This is about equal to MGIV in sensitivity and speed and about 1.5 - 2.0 in contrast.

PE
 
OP
OP

Photo Engineer

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Hey, whats going on. It said "Uploading attachment" then the message vanished and no upload?

OOOPS. Sorry. I store my data as hi-res scans. Yuk. It was my fault for having a super hi-res image.

I'm changing it right now. Sorry for the posts.

PE
 
OP
OP

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Alright!

The top is the raw emulsion. The next is the doped emulsion, which became more foggy. I have since controlled the fog. #s 3 - 5 are levels of ortho sensitizing dyes and the bottom item is Ilford MGIV at the same exposure level to show relative speed.

These exposures were using a Bausch and Lomb monochromator in a device called a spectrosensitometer. It is used to measure the H&D curve as a function of spectral sensitivity. I have one on loan in my DR right now.

PE
 
OP
OP

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This is from a 2 1/4 x 3 1/4 paper negative shot in a Polaroid holder in a Polaroid back in my RZ 67.

PE
 

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Mick Fagan

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This is mouth watering stuff!!

I cannot wait, until you have a saleable product that I can obtain.

I'll never get to one of your workshops, being this far away from the USA.

Mick.
 
OP
OP

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Ok, this is an ISO 200 (hopefully) ortho sensitized emulsion from last night. I have not had a chance to expose it in-camera, but you can compare the wedge spectrogram with the previous ones as they were all made at the same exposure time and intensity.

The apparent red sensitivity at the right is due to the huge overexposure and a harmonic in the spectro sensitometer, as I didn't have a UV filter in place.

PE
 

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