Search found 194 matches

by Digitaltruth
Mon Mar 13, 2006 7:33 am
Forum: The Digitaltruth Forum
Topic: pulling kodak infrared hie
Replies: 1
Views: 5433

The TTL camera meter doesn't read IR light, at least not completely or in a way that is usually accurate enough to determine exposures under varying conditions. Maybe someone who shoots a lot of IR film will be able to provide a better answer, but if you don't get any other responses then I think yo...
by Digitaltruth
Sat Feb 18, 2006 7:02 am
Forum: The Digitaltruth Forum
Topic: Developing times for ILford PAN Films in X-tall...
Replies: 4
Views: 8869

In a situation like this where there are no published times you need to extrapolate a starting point by looking at times published for other developers. Although there is no data for Ilford Pan 100 and Pan 400 in Xtol, there is data for FP4+ and HP5+ which are also manufactured by Ilford. The times ...
by Digitaltruth
Fri Feb 17, 2006 12:29 pm
Forum: The Digitaltruth Forum
Topic: Stöckler formula
Replies: 31
Views: 59145

The original link wouldn't work because it is hosted on a server which cannot be accessed externally, but Jay has sent me a copy which you can see below

http://1photogallery.com/hosted/Foma-200-MC-2-bath.//jpg//
by Digitaltruth
Wed Jan 25, 2006 8:02 am
Forum: The Digitaltruth Forum
Topic: Anyone tried the new 'Promicrol'?
Replies: 62
Views: 214124

Apart from the name, the old and new Promicrol are very different. The unavailability of "HEAP Sulfate" makes it impossible to replicate the original formula.
by Digitaltruth
Fri Jan 06, 2006 12:52 pm
Forum: The Digitaltruth Forum
Topic: Ilfosol S is stripping my film
Replies: 7
Views: 13766

It sounds to me like the film is not being developed. It doesn't make sense that the image would be formed and then "stripped off" by the chemicals unless you have introduced a bleaching agent during processing. This has to be highly unlikely, unless you happen to have a bottle of househol...
by Digitaltruth
Mon Jan 02, 2006 6:35 pm
Forum: The Digitaltruth Forum
Topic: Rollei B&W 120 infrared film 400 ISO
Replies: 6
Views: 12857

From what I've heard, it doesn't need a presoak and lacks the anti-halation layer. I'm pretty sure it is the Aura version, but maybe someone else that has used these different films will enter this thread and provide more info. My guess is that the halo effect being referred to is some way of saying...
by Digitaltruth
Mon Jan 02, 2006 4:55 pm
Forum: The Digitaltruth Forum
Topic: Rollei B&W 120 infrared film 400 ISO
Replies: 6
Views: 12857

We are still waiting for published times for most of the new Rollei films, but as you suggest, the original Maco times can be used until further information is available. In the case of Rollei IR film, it appears to be the original Aura film without the anti-halation layer. The times for this film s...
by Digitaltruth
Thu Dec 29, 2005 7:41 am
Forum: The Digitaltruth Forum
Topic: Kodak HIE and Rodinal
Replies: 2
Views: 6864

IR film responds to both visible and infrared light. Light meters vary in how they read IR, so unless you have calibrated your meter or built a separate IR-sensitive meter, then the light readings you take may not be reliable from one set of lighting conditions to the next. As a result, setting the ...
by Digitaltruth
Sat Dec 17, 2005 6:56 pm
Forum: The Digitaltruth Forum
Topic: concert light metering and exposure
Replies: 2
Views: 6818

This is a difficult question to answer because there are so many variables involved that you need to use some trial and error as well as relying on experience. Personally, I agree that you should be more concerned about exposing the highlights correctly as this is where most of the usable informatio...
by Digitaltruth
Sat Dec 17, 2005 7:17 am
Forum: The Digitaltruth Forum
Topic: rodinal 1:65 time for tri-x
Replies: 1
Views: 5855

No, I don't think this is a good time for pushing Tri-X. It was only a suggested approach to test with TMAX 400 based on the need to control contrast and the lack of push processing data that is available for this combination. In the case of Tri-X, the film is more suitable for push process techniqu...
by Digitaltruth
Fri Dec 09, 2005 7:44 am
Forum: The Digitaltruth Forum
Topic: using paper dev with film
Replies: 4
Views: 9192

Look in the chart under *All Films* with *Dektol* and you will see some guidelines. In general, a time of 3-5 minutes will certainly work and you should be able to substitute most general purpose print developers for Dektol. Once you run a roll or two, you can start to refine the dilution and time r...
by Digitaltruth
Wed Nov 30, 2005 2:51 pm
Forum: The Digitaltruth Forum
Topic: Arista.edu (foma?) with hc110
Replies: 3
Views: 8887

Arista EDU (old and new) is equivalent to Fortepan.
Arista EDU Ultra is equivalent to Fomapan.

You can use the times posted in the chart for Fortepan and Fomapan respectively to develop these films.
by Digitaltruth
Wed Nov 30, 2005 2:41 pm
Forum: The Digitaltruth Forum
Topic: Zonal Pro Developer
Replies: 2
Views: 7263

Times for Zonal Pro Gamma Plus Developer are listed under Gamma Plus.
by Digitaltruth
Sun Nov 20, 2005 3:17 am
Forum: The Digitaltruth Forum
Topic: Film looks underdeveloped, but was in more than enough time
Replies: 1
Views: 5947

If the film appears dark gray and lacks transparency, then it sounds like the fixer is not working. Try mixing some fresh fix, and immerse the film you have developed into the fixer for a minute to see if it clears. If this is not the problem, then replace your developer and run a test roll.
by Digitaltruth
Thu Nov 10, 2005 7:56 am
Forum: The Digitaltruth Forum
Topic: Developing TMY as positive
Replies: 9
Views: 15749

You can reversal process TMax film to produce a positive image by using a developer designed specifically for this purpose. We sell a TMax Reversal Kit made by Photographers Formulary and available on this page (scroll down to "Reversal Process TMax"): http://www.digitaltruth.com/store/for...