long time, low dilutions with an APX100

[palabras]

I've heard of this technique, which consists in using principally Rodinal at very low dilutions (1+100 or 1+200) for long times, 1 hour or more, with only one agitation of 1 minute at the beginning of the process.

Have you ever tried it? I'd like to use this method with an APX100 exposed at 200, to increase borders sharpness without having too much grain.

 

[pgomena]

Search the posts in this section for your answer. It's bound to be in there somewhere. By now, every developer dilution for just about any film is in this part of the forums.

Peter Gomena

 

[Shawn Dougherty]

APX100 @ 100 in Rodinal 1:100 for 1 hour with 1 minute initial agitation and 30 seconds of agitation at the halfway point has been bullet proof for me with scenes from n-1 to n+1. There will, however, be grain involved...

As Peter mentioned, do a search. This topic has been discussed at length here on APUG.

 

[david b]

My times for APX 100 in rodinal 1:100 were only 20 minutes. Produced lovely negs with fine grain.

Not sure about doing it for an hour though.

 

[palabras]

APX100 @ 100 in Rodinal 1:100 for 1 hour with 1 minute initial agitation and 30 seconds of agitation at the halfway point has been bullet proof for me with scenes from n-1 to n+1. There will, however, be grain involved...

As Peter mentioned, do a search. This topic has been discussed at length here on APUG.

sorry, I tried to search but didn't find topics with the right informations. I'll try again...

 

[palabras]

My times for APX 100 in rodinal 1:100 were only 20 minutes. Produced lovely negs with fine grain.

Not sure about doing it for an hour though.

Another thing that I'd like to try, is using this film at higher ISO. I've read in many forums that using stand development, you can push 100iso films to 1600 or even 2000iso with good results.
I've never seen examples with apx100, though.

 

[david b]

that's just silly.

APX 100 is an amazing film worthy of it's "fame"

Shoot it however you want. I would shoot it at 100 and enjoy the tonality and fine grain.

 

[palabras]

these are a couple of the discussions I was referring to:
http://www.rangefinderforum.com/forums/showthread.php?t=4441&highlight=12800
http://www.rangefinderforum.com/forums/showthread.php?t=51483

 

[david b]

How many rolls of this do you have?

 

[loman]

I've shot 35mm apx 100 at 200 and done stand development for an hour and a half with aph 09 (Uhr-rodinal) at 1+80 (this is 1+100 with normal rodinal), the negatives came out great. Initial agiation was for 30 seconds.

Best Regards
Mads Hartmann

 

[palabras]

@Mads: thank you for your experience

@david: I have many... I'll probably try by myself, but I wanted some data to begin from.

 

[Shawn Dougherty]

My times for APX 100 in rodinal 1:100 were only 20 minutes. Produced lovely negs with fine grain.

Not sure about doing it for an hour though.

I'm referring to semi-stand development, agitating for the first minute and for 30seconds after 30 minutes.

 

[Snapshot]

I've done high dilution long development with APX 100 and Rodinal. For standard development, I use the following...

1+50 dilution - 10:00 minutes
1+100 dilution - 19:00 minutes

Initial agitation of the developing solution is a typical 30 seconds. Afterwards, I agitate slowly and gently every minute for 5 seconds using standard development times. This is somewhat less than standard development agitation.

For Extreme Minimal Agitation development with APX and Rodinal, I use the following...

1+200 dilution - 60:00 minutes

Initial agitation of the developing solution is 60 seconds. It is important to agitate slowly and gently. Afterwards, I use gentle agitation for 5 seconds every 15 minutes. Development time assumes a 68°F/20°C temperature.

I hope this helps.

 

[el wacho]

if you're going to push, try using crawley's fx4 but as others have pointed out it's a waste of a good film. you'd probably get better results from using tri-x 400 @ 400 or @800-1600 with fx4. hope you get what you're after!

 

[el wacho]

... and to answer your original question

rodinal 1:200 20degC apx100 ei50 for 60minutes, agitate for first minute , gentle agitation @ 30min

if there's clouds , sky etc you may run into bromide streaking ( hence the gentle agitation at 30min hopefully to reduce this problem )

 

[palabras]

thank you, snapshot and el wacho. I have two different rolls exposed at 200. I'll try your methods on each and let you know which one is the best for me.

thanks!