Search found 178 matches

by Digitaltruth
Mon Aug 10, 2009 7:48 am
Forum: The Digitaltruth Forum
Topic: Contrast vs. density: what is the difference?
Replies: 4
Views: 13909

Re: Contrast vs. density: what is the difference?

Contrast is the amount of separation between dark and light tones, whereas density refers to the opacity of exposed silver in the negative. A dense negative is effectively a thicker negative which requires more exposure to enlarge, usually resulting in increased apparent grain. Overexposed or overde...
by Digitaltruth
Thu May 28, 2009 11:45 am
Forum: The Digitaltruth Forum
Topic: Developing Rollei R3
Replies: 4
Views: 6262

There was an error in the devchart, so the times for R3 were not available. I have fixed it now and you can see all the times by selecting "Rollei R3" from the film list at:
http://www.digitaltruth.com/devchart.php
by Digitaltruth
Fri May 15, 2009 12:09 pm
Forum: The Digitaltruth Forum
Topic: Acufine and 120 HP 5+
Replies: 2
Views: 4409

Hi Jim, I've checked the references on this and the data actually comes from the last ever chart produced by Acufine Inc. The actual times shown are: 35mm: 640 ISO, 6.5 mins, 21C/70F 120 roll: 640 ISO, 12 mins, 21C/70F More recently, Ilford has published these times for all formats (35mm, 120 roll, ...
by Digitaltruth
Tue Mar 03, 2009 5:21 pm
Forum: The Digitaltruth Forum
Topic: F-76 equivalents
Replies: 3
Views: 5855

Try 1+14
by Digitaltruth
Fri Feb 13, 2009 4:52 am
Forum: The Digitaltruth Forum
Topic: request for Thermometer suggestions
Replies: 6
Views: 8155

dfbldwn,

We sell Ktol, which is an Xtol clone, in single packs. If you want the Kodak original Xtol, we can sell you single packs but the price is slightly higher than the case pricing. Please just contact us via the Digitaltruth web site and we'll be happy to help.
by Digitaltruth
Mon Jan 05, 2009 5:10 am
Forum: The Digitaltruth Forum
Topic: neopan 1600 @ 3200 dev time
Replies: 22
Views: 24384

Rodinal has a compensating effect. At this dilution it is very contrasty and grainy, so I would recommend about 9-10 minutes.
by Digitaltruth
Sun Jan 04, 2009 11:27 am
Forum: The Digitaltruth Forum
Topic: neopan 1600 @ 3200 dev time
Replies: 22
Views: 24384

You should not double the time as this will result in overdevelopment. Please select "Push Processing" from the text menu on the left column of the Massive Dev Chart to determine the best time. In general, you should add anything from zero to 50% more time depending on the exact exposure conditions....
by Digitaltruth
Tue Sep 09, 2008 3:48 am
Forum: The Digitaltruth Forum
Topic: IR photography; efke and rollei
Replies: 1
Views: 4316

The ISO setting is very misleading when using Infrared film. First of all, the film itself is sensitive to both the visible and the IR spectrum in proportions which differ from those which your light meter can interpret, so while you might find it useful to establish an ISO setting which will produc...
by Digitaltruth
Tue Sep 09, 2008 3:26 am
Forum: The Digitaltruth Forum
Topic: need help developing neopan acros at iso200 in XTOL 1:1 68F
Replies: 2
Views: 6098

You need to guess an approximate time, so in this case I would consider adding about 15% to the development time for ISO 100. Maybe 11-12 minutes. There is no firm answer for push processing times unless you have tested in advance. You can use the Push Processing guide which can be accessed from the...
by Digitaltruth
Wed Jun 25, 2008 4:47 am
Forum: The Digitaltruth Forum
Topic: Silvergrain products update
Replies: 5
Views: 8124

Hi Keith,

Our policy is not to publish any speculation, so apart from our stated intention to pursue the release of film developer(s) sometime in 2009, I cannot say anything further at this point.
by Digitaltruth
Tue Jun 24, 2008 4:28 pm
Forum: The Digitaltruth Forum
Topic: Silvergrain products update
Replies: 5
Views: 8124

At the moment we do not have distribution outside of North America. We can ship Silvergrain worldwide, but the US Postal Service no longer offers any surface or inexpensive parcel services, so the cost of shipping is extremely high. We are hoping to bring the Silvergrain products into Europe sometim...
by Digitaltruth
Tue Jun 24, 2008 9:31 am
Forum: The Digitaltruth Forum
Topic: Silvergrain products update
Replies: 5
Views: 8124

Silvergrain products update

SILVERGRAIN Products update Our unique range of environmentally-safer chemistry has now been updated and features various enhancements: TEKTOL STANDARD New improvements for stable processing performance and enhanced shelf life. Photographic performance, including image tone, has not been changed. T...
by Digitaltruth
Fri May 30, 2008 12:44 pm
Forum: The Digitaltruth Forum
Topic: zone processing
Replies: 27
Views: 26910

These points of view are not necessarily unreconcilable. While from a technical perspective there is only one "correct" negative, the zone system offers the ability to exercise control of a negative through a combination of understanding the contrast of a scene and manipulating exposure and developm...
by Digitaltruth
Fri May 30, 2008 11:26 am
Forum: The Digitaltruth Forum
Topic: processing
Replies: 3
Views: 5510

Its definitely worth trying Farmer's Reducer, although you should be sure to use it in its subtractive form which is applicable to general fogging. Any Farmer's Reducer kit can be used as either a proportional or subtractive reducer depending on how you mix it, and instructions should be included. I...
by Digitaltruth
Fri May 30, 2008 4:59 am
Forum: The Digitaltruth Forum
Topic: processing
Replies: 3
Views: 5510

Its very hard to say what has happened, but it might be that your film was fogged during loading or development. The other possibility is that your film hasn't been fixed properly. If the film is fogged, you can try using Farmer's Reducer on the negatives, or if it hasn't been properly fixed, you ca...