Polaroid Negs

Recent Classifieds

Forum statistics

Threads
179,581
Messages
2,472,803
Members
94,843
Latest member
ocieb
Recent bookmarks
0

Black Dog

Member
Joined
Jul 21, 2003
Messages
4,294
Location
Running up that hill
Shooter
Multi Format
Is there any way you can manipulate the contrast of Polaroid Type 55? Also what about Type 51HC for alt processes (as these tend to need chunky negs?)

BD
 

dr bob

Member
Joined
Sep 7, 2002
Messages
870
Location
Annapolis, M
Shooter
Medium Format
I probably will be sorry for opening my big mouth, but I should think altering the development time would affect Polaroid Type 55 about the same as development of traditional film. I remember that the negative requires a little more exposure than the print. I have a pack in the frige so I'm anxious to hear your results.
 

Ole

Moderator
Moderator
Joined
Sep 9, 2002
Messages
9,250
Location
Bergen, Norway
Shooter
Large Format
The Type 55 developer is a monobath-type gunk, so changing the time won't do much difference to the negative. But you CAN strip it (undeveloped) and develop the neg in your favorite developer...
 

clay

Member
Joined
Nov 21, 2002
Messages
1,335
Location
Asheville, N
Shooter
Multi Format
option 1) Selenium tone the neg. This will add about .2-.3 density in the highlights

or

option 2) bleach and redevelop in a staining developer such as pyrocat or rollo pyro. This will increase the grain somewhat, but if you're contact printing, that really doesn't matter. This would be the best way to get some additional 'effective density'

Clay
 

glbeas

Subscriber
Joined
Sep 25, 2002
Messages
3,853
Location
Marietta, Ga. USA
Shooter
Multi Format
Thats the sulfite bath to clear the film. It works similar to fixer to clean up the image of unused silver and other gunk.
 

doughowk

Member
Joined
Feb 11, 2003
Messages
1,809
Location
Kalamazoo, MI
Shooter
Large Format
When I use type 55, place in jug with water & paper towel between each negative - they easily scratch. Then when get home place in hanger & in tank of sodium sulfite for a few minutes, rinse & photoflo. Sodium sulfite isn't something I'd want to carry with me while shooting.
 

Ole

Moderator
Moderator
Joined
Sep 9, 2002
Messages
9,250
Location
Bergen, Norway
Shooter
Large Format
The instructions say 18%, which is 200g sodium sulphite to 1 liter water.
 

MikeK

Member
Joined
Mar 30, 2003
Messages
556
Location
Walnut Creek
Shooter
Large Format
Aggie said:
At one of the workshops I was at, a guy had the type 55 with him. After he pulled off the paper he put it in a 4x5 developing take with sodium????to soak for a while. What chemical is that? I want to try out the film, since i have a few packs in the freezer, but forgot to ask here til now.

Sodium Sulfite is one of the most useful chemicals around. It is used as a clearing bath for polariod negative film, as an oxygen scavenger in developers, a main ingredient in hypo clear formula and mainy more.

In small quantities it can be expensive, but in bulk quite cheap. The Looking Glass has it in stock.

- Mike
 

fhovie

Member
Joined
Mar 20, 2003
Messages
1,250
Location
Powell Wyoming
Shooter
Large Format
I don't think you need it that strong for clearing polaroid film. It seems I threw about a table spoon of it in a 5x7 tray with water and that cleared a half dozen type 55 negs just fine. Photoformulary has it and it is a great chemical to have on hand. Order some Metol and sone Sodium Metaborate and you can make D76H and Split D-23 and of course, hypo clear. I buy it 10lbs at a time.
 
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