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Bobfrance
02-21-2008, 12:31
Hi folks,

Just a quick question.

What is the dilution of AGFA Rodinal?

I've just bought a some but I can't see any ifo on the bottle.

Cheers!

Bob.

santino
02-21-2008, 12:37
guess 1:50

EmilGil
02-21-2008, 12:38
Any dilution you like. Most common ones are 1:25, 1:50 and 1:100. Some people even do 1:200 for no-agitation stand development. Times vary with dilution, check www.digitaltruth.com/devchart.html for starting times.

Just make sure you use 3ml stock solution per 135-36, that's the recommended minimum amount. I usually run my APX100 in 1:50 for 15 minutes at 20'C/68'F, PanF for 12 minutes.

santino
02-21-2008, 12:38
but also 1:25 & 1:100. depends on film and visual intention

Bobfrance
02-21-2008, 12:39
Cheers Santino,

Any idea where I can get a chard of developing times for different films?

I've got a roll of HP5 I want to get started on.

Edited to say: Whoa you beat me to it guys!

I'll go and have a look at that chart. :)

Bobfrance
02-21-2008, 12:42
Any dilution you like. Most common ones are 1:25, 1:50 and 1:100. Some people even do 1:200 for no-agitation stand development. Times vary with dilution, check www.digitaltruth.com/devchart.html (http://<u>www.digitaltruth.com/devchart.html</u>) for starting times.

Just make sure you use 3ml stock solution per 135-36, that's the recommended minimum amount. I usually run my APX100 in 1:50 for 15 minutes at 20'C/68'F, PanF for 12 minutes.


Stock solution? :confused:

I get the impression Rodinal is quite different to use than the Ilford and Tetenal developers I've used before.

OurManInTangier
02-21-2008, 12:48
I love Rodinol, I tend to go with 1:25...though my point is that some people find some of the faster films (incl. Delta 400 & HP5) don't dev so well in Rodinol as the slower films.

I found that when I put Delta 400 through at the label suggested times it looked excessivley grainy. Obviously this is fine if you want that look and its also true to say that with experimentation to find your way of using Rodinol you can dev whatever film you want in it and control the grain.

Personally I tend to put my Delta 100 through Rodinol and Delta 400 through Ilford DDX. I've recently switched to Tri-X and am going to bite the bullet and go with Rodinol....lots of experimenting coming up!

Good luck

ncd_photo
02-21-2008, 12:53
My First Attempts with Rodinal and Tri-X was at 1:50, but the results, although ok, were over developed - most likely due to excessive agitation (followed the rodinal leaflet).
I've since used rodinal at 1:50 with Acros 100 for 12 mins, 68F. Gentle agitation for 30 secs then one slow inversion per minute and the results are fantastic.

1:50 gives you a bit more time to dev the film but I'd go easy on the agitation.

mr_phillip
02-21-2008, 12:55
I found that when I put Delta 400 through at the label suggested times it looked excessivley grainy.

Delta 400 is notoriously developer-fussy (unlike Delta 100 which seems happy in just about anything). You should have much better luck with your Tri-X in Rodinal.

My absolute favourite use for Rodinal is AGFA APX100 rated at 125ASA and souped in 1+50 for 17 minutes. Fabulous tones and sharpness.

Larky
02-21-2008, 12:56
I used to use 1:25, but now go with 1:100 stand dev. I think less agitation = better results, at least for me it does. Do 2 hours, 20 degrees C with Neopan 1600, 1:100, it's stunning. BTW, the G1 is being very good to me :)

Bobfrance
02-21-2008, 13:01
I used to use 1:25, but now go with 1:100 stand dev. I think less agitation = better results, at least for me it does. Do 2 hours, 20 degrees C with Neopan 1600, 1:100, it's stunning. BTW, the G1 is being very good to me :)

Hi Andrew!

I'm glad you're enjoying the G1.

They say you never miss things till they're gone and it's true.
I keep looking at G2's :o

Have you posted any pics yet?

OurManInTangier
02-21-2008, 13:06
Delta 400 is notoriously developer-fussy (unlike Delta 100 which seems happy in just about anything). You should have much better luck with your Tri-X in Rodinal.

My absolute favourite use for Rodinal is AGFA APX100 rated at 125ASA and souped in 1+50 for 17 minutes. Fabulous tones and sharpness.

I didn't know that about Delta 400. I really like Delta 100 but thats probably because its such a versatile and forgiving film - I'm no darkroom master!

I'll give the 1:50 a go, I've already dropped the agitation to three gentle inversions initially then one inversion every three minutes. It gave me far better results.

I'm curious about the Agfa, I've never got my hands on any...I'm about to try the PlusX 125 stuff as I like the TriX so much.

Larky
02-21-2008, 13:50
I have a small gallery here, I don't like to give the link out too much. The pics state what they were made on.

www.ingenieursonline.co.uk/street

I keep looking at Hexar RF's!

Monz
02-21-2008, 14:11
I use Rodinal at 1:25 or 1:50 with a Jobo CPE2 rotating tank. I use a 10ml syringe to draw up the Rodinal from the stock bottle. If I need to make 1:25 dilution, I squirt 10ml into a measuring cylinder containing 250ml of water which gives me 260ml toatal volume - perfect for the Jobo 1520 tank (if rotation is used but not for agitation which requires a larger volume).

I have used Rodinal with Delta 400, Tri X ISO 400, TMax 400, PanF and Acros ISO 100. As Simon mentioned, Delta 400 looks a bit grainy. TriX and Acros come out nice.

At 20C, using rotation:
Delta 400, 1:25 dilution : 8 mins
TriX ISO 400, 1:25: 6min 15sec
TMax ISO 400, 1:25: 5min 30sec
PanF ISO 50, 1:25: 10 mins
Acros ISO 100, 1:50: 12mins

For hand agitation add 10-15% to these times.
Al the best
--
Monz

charjohncarter
02-21-2008, 14:38
The actual dilutions are 1+25 and 1+50 which is only slightly different from 1:25 and 1:50. It does make it easier to measure though. I guess there is also an unofficial dilution of 1+100. Here are the papers that should have been in your box of Rodinal.

CC72
02-21-2008, 14:53
Where on the net can you get Rodinal?

Trius
02-21-2008, 16:39
I am a fan of 1:100 and reduced agitation (30 sec. then 3 gentle inversions every 3 minutes) for both APX 100 & Tri-X; that gives very long tonal scale, tight grain and marvelous tonal scale, BUT if the subject is very low contrast, then that combination will give flat results. Time is 20min @ 20C. I rate Tri-X @ 250 and APX100 @ 100.

Lately I have been trying a mix of Rodinal & Xtol, but I won't go into that here. :D

APX 100, Rodinal 1:100, Yellow-Green Filter

http://farm3.static.flickr.com/2313/1574197748_648c12e999.jpg?v=0

Most major online retailers sell Rodinal; I get mine from Freestyle.

remegius
02-21-2008, 17:01
The actual dilutions are 1+25 and 1+50 which is only slightly different from 1:25 and 1:50. It does make it easier to measure though. I guess there is also an unofficial dilution of 1+100. Here are the papers that should have been in your box of Rodinal.

That's interesting. My official AGFA Rodinal sheet has a header which states: "Rodinal and Rodinal Special Process Times." On that sheet there is a section for Rodinal 1+100.

Cheers...

charjohncarter
02-21-2008, 17:35
I have used 1+100 Rodinal, and I got development information from people that I know. But this is what was enclosed with my Rodinal bottle, as you can see from Agfa, from FreeStyle Photo. My sheet does not have 1+100 information.

Trius
02-21-2008, 17:41
My Rodinal (bought just before Agfa went under) does not have 1:100 times. I got my times from Massive Dev. The newer bottling by the new manufacturer may have 1:100 times.

Trius
02-21-2008, 18:23
IIRC, the sheet in the box has never had the 1:100 dilution. I suppose Agfa just never bothered to test that dilution, as they felt 1:25 and 1:50 were sufficient, or whatever. Sorta like HC-110 Dilution H ... not an official Kodak dilution, but used by a lot of workers.

charjohncarter
02-21-2008, 21:22
Well, whatever, 1+100, as Trius has shown with his 1+100 tree, this dilution works great. I wish I could do that. Something to shoot for, at least in my case. Thanks Trius.

EmilGil
02-21-2008, 23:18
Stock solution? :confused:

I get the impression Rodinal is quite different to use than the Ilford and Tetenal developers I've used before.
Rodinal is a bit different, yes. The main features are a sharp but pronounced grain, not fuzzy as when using D76. Higher dilutions will preserve highlights better than low dilutions but with a slight increase in grain. It's also pretty sensitive to agitation, keep it low to start with or you'll see the contrast sky-rocket.

What I meant with "stock solution" was the solution in the bottle you bought, perhaps "concentrate" would have been a better word.

kully
02-21-2008, 23:32
Hallo Emil,

What do you mean by reduced agitation?

Every minute I knock the tank against the work surface a couple times, swirl left for 5 seconds, swirl right for 5 seconds and then knock the tank again a couple of times. Should I cut this down?

EmilGil
02-21-2008, 23:50
Your agitation scheme is more of a "normal" one. If you like the results, I see no point in changing your procedures. I usually run APX100 in 1:50 for 15 minutes with a twist or two every 30s.

Reduced agitation is something like one twist per hour :) It's often used in combination with extremely high dilutions, 1:100 or 1:200, and looong development times, 1-2 hours, in stand development. I have never tried but it's said to give even better control of contrast and highlights than normal development.

kully
02-21-2008, 23:58
Cheers Emil, I havn't used Rodinal enough to reach any conclusion of my own, so I am borrowing others :)

titrisol
02-22-2008, 04:10
1+25
1+50
or 1+100
each of them has advantages and disadvanateges
please read the article appreciating rodinal in unblinkingeye.com

PS. get a syringe from your pharmacist to measure the amounts of rodinal in your working solution
it is a loit easier
Hi folks,

Just a quick question.

What is the dilution of AGFA Rodinal?

I've just bought a some but I can't see any ifo on the bottle.

Cheers!

Bob.

TO: OurManInTangier
APX100 was manufactured by AGFA which is now defunct. however the film can be bought as Rollei Retro 100 from Fotohuis and others

To: Kully
Reduced agitation is once every 5 minutes or so, which is practiucal fro times above 30 minutes.
The idea is to allow developer to be consumed in the highlights thus preventing too much contrast.
Semi stand is once every 30 minutes
Stand is none

Bobfrance
02-23-2008, 13:24
Thanks for all the imput guys.
You more than made up for the fact that AGFA didn't include any istructions with my bottle. :)

Well I've just done my first roll.

The good news is - it's not blank. Although the negs look very thin/pale.
Any idea what I am doing to cause this?

I mixed a 1+25 solution (4ml dev to 1 litre of water) all chemicals & water were at 20 degC

I developed for 8 mins giving about 30 seconds initial agitation and then and inversion every 2 minutes.

Despite being thin the negs seemed to scan in suprisingly well.
I've attached a couple of examples.

All feedback more than welcome. :)

Bob.

Trius
02-23-2008, 14:37
Bob: I can't argue with that result.

Bobfrance
02-24-2008, 02:54
Thanks Trius.

I must admit I was worried when I first saw the negs. I thought they were blank!
I'm hugely suprised they scanned so well.

Anyone have any thoughts on what happened?

oscroft
02-24-2008, 03:18
Despite being thin the negs seemed to scan in suprisingly well.
Yes, it is often thought that thinner negs scan better (and I'd agree). Contrast is more important than (and very different to) negative density, but I have to say I've often developed film in Rodinal very similarly to the way you did and I don't get especially thin negatives.

Trius
02-24-2008, 05:47
I agree with Alan; my negs with similar procedure are not that thin. Short of an error in dilution, I wonder about the water. Could a high iron content cause this effect?

Bryce
02-24-2008, 11:50
Do you really mean 4mL Rodinal to 1 L of water? That would give you very thin negatives.... You were after a 1:25 solution, and mixing one liter right? That would mean (1/25)•1000=40 mL, not 4 mL! Unless you typed wrong, you have developed your film at a dilution of 1+250 and that would certainly explain thin, low contrast negatives.
Hope this solves the problem!

LeicaM3
02-24-2008, 12:12
I mixed a 1+25 solution (4ml dev to 1 litre of water) all chemicals & water were at 20 degC

I developed for 8 mins giving about 30 seconds initial agitation and then and inversion every 2 minutes.



You mean 40 ml.
In a 1:250 mix at 8 minutes you wouldn't see much on the neg :D

Bobfrance
02-24-2008, 12:19
Ha ha, you're right guys! :o

I think I've just had my first senior moment.

That certainly explains it. I remember thinking at the time "only 4ml? This rodinal will last me forever!"

Well at least I've proved something - you can still get scannable negs from a 1:250 mix or Rodinal.

*Instantly dies of embarrasment*

Trius
02-24-2008, 15:47
The funny thing is, when I saw "4ml", I "read" 40ml. Who's embarrassed now?

titrisol
02-24-2008, 23:07
naah 1+250 is good enough for long development times....
fill your tank, agitate a couple of times. Watch a college basketball game and then stop - fix and presto!