Help! Messed up Tech Pan

Forum statistics

Threads
179,368
Messages
2,468,857
Members
94,799
Latest member
FeS2
Recent bookmarks
1

jrong

Member
Joined
Dec 9, 2003
Messages
125
Location
London, Engl
Shooter
Multi Format
After my post about developing Tech Pan... I decided that I'd experiment with developing my own Tech Pan after shooting a test roll and not potentially destroy the one that I took on holiday at the Isle of Skye while experimenting with Technidol for the first time. I finished a roll there within an hour, the sky was bright but the landscape was not particularly high-contrast, I shot with a yellow filter, +1 compensation, at ISO 25. I took the roll in to the local pro lab for processing. I guess I should have just gone ahead and tried my hand at processing it myself, because the results came back shockingly high-contrast. In fact, the whole roll was ruined. Since it was the first time I'd taken Tech Pan to the lab, I didn't know what questions they should've asked me or anything - they didn't ask me anything at the counter, and did not ring me for further instructions although I left them my phone number as standard procedure.

I have attached two scans, and I managed to only make them look faintly presentable after a LOT of PS work, i.e reducing contrast, adjusting levels and tweaking curves. I do not claim to be a PS genius, so perhaps more could be done, but the skies were all completely blown out, any highlights were also blown out, etc. It looks like a fault with the lab processing??? At any rate, I'd like to know whether I can salvage these negatives, and whether or not I am justified in asking the lab for a refund for this botched job.

Thanks for any thoughts,
Jin
 

Attachments

  • skye1.jpg
    skye1.jpg
    93.7 KB · Views: 109
  • skye2.jpg
    skye2.jpg
    81 KB · Views: 106

Ian Grant

Subscriber
Joined
Aug 2, 2004
Messages
22,064
Location
West Midland
Shooter
Multi Format
jrong said:
It looks like a fault with the lab processing??? At any rate, I'd like to know whether I can salvage these negatives, and whether or not I am justified in asking the lab for a refund for this botched job.

Thanks for any thoughts,
Jin


You mentioned you did your tests with Technidol, as you must be aware this is a specialist developer. Few professional labs would process Technical Pan and you should have discussed the processing requirements when you handed the film over.

In normal use Tech pan is supposed to be a high contrast film and so if processed normally in a professional lab will give results like yours.

Tech Pan used for more conventional tonal work requires the use of a specialised low contrast developer formula, like Technidol or POTA. Few labs would have these on their shelves as Tech pan sells in quite low quantities here in the UK.

The answer is process your own. It's probable you would get more easily printable negs if you bleached your negs in a re-halogenating bleach (ie the bleach from IT-1 toner) washed well, re-exposed to light then re-developed in Technidol.

IT-1 Bleach

100gms Potassium Ferricyanide
100gms Potassium Bromide
Water to 1 litre

Use 1 part Bleach to 9 parts water
 
OP
OP

jrong

Member
Joined
Dec 9, 2003
Messages
125
Location
London, Engl
Shooter
Multi Format
I will definitely process my own Tech Pan in the future. What bothers me is that the lab did not inform me what developer or processes they were going to use before taking on the job... especially since they had my phone number. I guess it's something to bear in mind for the future. I just made an assumption that these pro labs would know how to deal with it (and not do it if unsure) and not need specific instructions from me. What a mistake! Mea culpa, I guess.

Anyway I am not too used to playing around with chemistry, re: your instructions on how to make the ruined negs potentially printable... what do you mean by re-exposing the negs to light? Do you mean converting my negs to B+W positives?
 

titrisol

Subscriber
Joined
Aug 2, 2004
Messages
1,781
Location
RDU / UIO
Shooter
Multi Format
why not try printing them using a 00 filter or using water bath development or some other technique first?
 

Ian Grant

Subscriber
Joined
Aug 2, 2004
Messages
22,064
Location
West Midland
Shooter
Multi Format
jrong said:
I don't know much about this, but is it possible to use Kodak Farmer's Reducer to salvage the negs?
Far more risky than bleaching and redeveloping in a soft working developer.

You'll bleach out the shadow areas if you use Farmers reducer on such contrasty negs and barely touch the highlights, the process is irevesible. While Farmers reducer was recommended for overdeveloped and contrasty images in the case of Tech pan in normal film defelopers it's a case of extreme contrast.

Bleaching and redeveloping can be by inspection and the development curtailled when the desired density is reached.
 
OP
OP

jrong

Member
Joined
Dec 9, 2003
Messages
125
Location
London, Engl
Shooter
Multi Format
Hi Ian, thanks for this -- got any specific instructions on how to do this bleaching and re-developing (esp the exposure to light bit)? It's all new to me. I'm not used to messing about with so much chemistry. If you could point me to a website with info, that'd be good too!

Thanks.
 

Ian Grant

Subscriber
Joined
Aug 2, 2004
Messages
22,064
Location
West Midland
Shooter
Multi Format
OK make up the bleach solution I posted earlier. Then bleach the negs in a print dish untill all the silver has been converted back to Silver Bromide, the image will go white. Wash well until all the yellow ferricyanide is washed out.

Re-expose using a bright light, (reading lamp with a 100w bulb 18" away for 3-4mins will do fine) leave the negs in water in the print tray while you do this. Then re-develop slowly with plenty of gentle agitation in Technidol or a similar dev recommended for Tech pan.

Dev by inspection as this can be done in normal room lighting. Stop & fix the negs when you've reached the desired density.

Keep the temperature of all the chemicals & wash water as close to 20° C as you can. You can do one strip first to test the method, but it is very easy and it is a recognise technique although rarely used now.

If you need the chemicals, message me.

Hope that helps
 

mobtown_4x5

Member
Joined
Feb 24, 2004
Messages
243
Location
Baltimore
Shooter
4x5 Format
You can always get better results at home developing BW film-
consumer film processing services (they still have those!) are geared toward color, and they don't care about your work. Chalk it up to experience and stay away from consumer photo labs!
 
Photrio.com contains affiliate links to products. We may receive a commission for purchases made through these links.
To read our full affiliate disclosure statement please click Here.

PHOTRIO PARTNERS EQUALLY FUNDING OUR COMMUNITY:



Ilford ADOX Freestyle Photographic Stearman Press Weldon Color Lab
Top Bottom