What I understand the genuine Rodinal recipe is in legal limbo and cannot be used by any developer maker. R 09 is exactly, what it is a R 09 also called Calbe R 09. It is not patented forerunner to Rodinal, so it is very similar in action.Mirko of Fotoimpex said that Adox Adonal IS NOT R09 one shot.
They are comparable but NOT the same developer.
To what I know only Adox Adonal is the genuine Rodinal recipe.
FP4 and Delta 100 should look good in R09 1:100. It will look good already after 30 min. Start with max 20 C (68 F) and let it cool down, or you may keep 18 C from the start. Lower temperature helps keep grain smaller. Agfa APX 100 in this combination was giving no visible grain in 8x10 from 35mm film.I've read that stand development for 1 hr can give nice results at 1:100. Never tried stand developing. I can see how someone could easily get hooked on endlessly experimenting w/ this stuff! Probably the best thing I could do is use a 100 ISO film (FP4 or Delta 100)?
I have 2 rolls of 35mm Arista EDU Ultra 100, but that may not be a good choice. The last time I tried that w/ D76 things looked grainy and high contrast (shot in bright sun).
What I understand the genuine Rodinal recipe is in legal limbo and cannot be used by any developer maker. R 09 is exactly, what it is a R 09 also called Calbe R 09. It is not patented forerunner to Rodinal, so it is very similar in action.
Maybe you are right, so what is Calbe R09 ?There are NO legal boundaries laid upon the Rodinal recipe. The patent is about 120 years old and free since generations.
There also is no forerunner to Rodinal.
In some countries the trademark Rodinal is still protected.
Not me, AgX. This all legal wrangling around Agfa bancrupcy is giving me headache.But timor is right, the Rodinal recipe is nobody's property.
Not me, AgX. This all legal wrangling around Agfa bancrupcy is giving me headache.
And thanks for bringing up a Canadian name for Rodinal - Blazinal. I have a 500 ccm bottle of this thing standing on my shelf, but no heart to open it. I lost confidence in it. For 10 years I was happy user of ORWO R-09, this thing never failed, even open for 2 years, black like an ink, was doing its job with reliance. Than came Agfa Rodinal to my darkroom, it lasted maybe 6 months in open bottle and I had to dump it. Next bottle of Agfa Rodinal crystallized in three months, unopened. And I mean 25% of the bottle were crystals. No any developing power off course. Blazinal is standing unopened for a year and a half now. No crystals so far, just became dark. So you guys tell me, what's going on with that recipe of Rodinal. How many of them are there ? And which could be trusted 6 months after opening ?
Good, so there is a hope. Thanks NB.I've had an original bottle of Rodinal and two bottles of Blazinal, used them in rotation. The Blazinal lasted for 5 years without problems.
I personally believe that Blazinal is the real thing. 100% sure.
Not me, AgX. This all legal wrangling around Agfa bancrupcy is giving me headache.
And thanks for bringing up a Canadian name for Rodinal - Blazinal. I have a 500 ccm bottle of this thing standing on my shelf, but no heart to open it. I lost confidence in it. For 10 years I was happy user of ORWO R-09, this thing never failed, even open for 2 years, black like an ink, was doing its job with reliance. Than came Agfa Rodinal to my darkroom, it lasted maybe 6 months in open bottle and I had to dump it. Next bottle of Agfa Rodinal crystallized in three months, unopened. And I mean 25% of the bottle were crystals. No any developing power off course. Blazinal is standing unopened for a year and a half now. No crystals so far, just became dark. So you guys tell me, what's going on with that recipe of Rodinal. How many of them are there ? And which could be trusted 6 months after opening ?
I know about some crystals, not the whole heck of them. It happened only once, not before, not after with Blazinal. After 1.5 year of standing in the same conditions no single crystal in it. If this is a Maco product, buy from Maco.Thats wierd. I've been told the crystal are supposed to be there and in fact the two last botles of Rodinal Ive used had them from purchase and worked fine anyway. Now Im down to the last ml's so what to do next?
Best regards
It was long time ago but I think the dilutions given for ORWO R09 were 1+20, 1+60, 1+80, 1+100, 1+150, 1+200 and 1+40 was the basic dilution for which the times were given. For every other dilution there was a specific multiplier. Also remember opinions from that times, that ORWO R 09 was made by the original Rodinal recipe, unchanged until the end, while Agfa made changes supposedly to shorten the shelf life and increase sales.So far I have read somewhere Rodinal is more concentrated than R09.
Rodinal 1+25 = R09 1+20 , Rodinal 1+50 = R09 1+40 , etc.....
But I don't know if it is the only difference,
after the worldwar 2 R09 was made by the east german agfa (or orwo) and Rodinal was made by west german agfa.
There are NO legal boundaries laid upon the Rodinal recipe. The patent is about 120 years old and free since generations.
There also is no forerunner to Rodinal.
In some countries the trademark Rodinal is still protected.
Rodinal was invented by Agfa, Wolfen.
Not quite... Rodinal was invented by Andresen, a organic chemist, and amateur photographer, who worked for Agfa who then produced Rodinal and other of his inventions. Only due to the success of Rodinal an additional photo division was erected at Agfa, who up to then made their money with dyestuffs.
Agfa was located in Berlin. Wolfen was still an unimportant village. It only became the location of Agfa's Filmplant about 20 years later.
With the erection of a second, western Agfa in 1952 after the division of Germany a complex legal situation arouse. More complex than you depicted. This was mutually settled in 1964, with the primary company (Berlin/Wolfen) changing all their tradenames, and the new one (Leverkusen) taken in all the traditional tradenames.
Not quite... Rodinal was invented by Andresen, ... More complex than you depicted.
Hi RogerI have a bottle of Agfa Rodinal that dates from the early 90s, almost but not quite full. I developed a few rolls of 35mm, never could get results I actually liked and stopped using it. I still have that bottle so it will be interesting to see how and if it still works - bet it does.
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?