|
|
 | | Author | |
|
| | Date | |
|
|
|
|
Michael S |
18:13 21 May 13 |
|
|
Luigi Pasto |
11:25 28 May 13 |
|
|
David Jade |
16:35 28 May 13 |
|
|
Miles Nelson |
13:27 8 Jun 13 |
|
|
Michal |
13:18 26 Mar 12 |
|
|
David Jade |
15:18 26 Mar 12 |
  |
Welcome Michal,
1. yes - typically in BTZS you would develop each negative for a separate time. This is because BTZS works by keeping each negative's density matched to the paper you will print on by controlling the development time. In practice however, you will probably find that many of your negative are grouped into sets with fairly similar times. For me, if I were using a Jobo (I use the tubes) I would tend to group negatives with similar times together if they were close enough. 5-10 seconds here and there are unlikely to make too big of a different to justify not using your Jobo.
2. No you don't have to buy anything actually to use BTZS but you will find that using ExpoDev will make things a lot easier that working with printed charts from film tests. You will need your own personal film test data however. You can do that yourself (using WinPlotter) or you can work with someone like the ViewCameraStore.com who can help you by doing most of the work for you (including analysis using WinPlotter). I would suggest starting with the View Camera Store's film testing service but that may not be an option for you in Poland. Testing is something you only do when you change methods or materials.
3. Back when Phil Davis produced test data for a bunch of film & developer combinations FP4+ was tested however it was never tested with Rodinal so you would have to do that test if you wanted to use BTZS techniques with that film/developer combintion.
4. The ViewCameraStore.com offer exactly the service you would need to calibrate your workflow for BTZS. They will test both film and paper for you. Basically, they send you pre-exposed film to develop. You send the developed negative back to them and they give you your test results as analyzed by Plotter. They will also give you the film profiles that you would load into ExpoDev for the iPhone. This is all you need to get started. Having you develop the negatives in your own workflow is an important part of BTZS. This is because different people will get different data even when using the same combinations. This is due to variations in technique, water, etc...
If you contact the View Camera Store they can also give you more guidance on using your Jobo as well with BTZS as I know they have users who go that route. However if you really get into BTZS you may want to consider using BTZS style tubes as they allow each negative to get developed independently for different times (or even different developers).
I hope this answers you questions. Good luck!
David
|
|
|
|
|
|
|
|
|
Michal |
1:34 28 Mar 12 |
|
|
Dietrich Floeter |
7:52 23 May 11 |
|
|
Fred Newman |
12:06 23 May 11 |
|
|
Dietrich Floeter |
7:50 24 May 11 |
|
