D76 with 400TX at 100

[tj01]

Jus wondering if any has experience doing D76 with Tri-X but pulled to ISO 100. I'm trying 7-8 mins with ok results but if any of you have some experience with dev times, input would be appreciated. Thanks

 

[le vrai rdu]

can you post some pictures ?

I use trix from 200 to 3200, but if I can use it from 100 it would be nice

 

[gns]

I've done that quite a lot.
I assume you are trying to tame a really contrasty scene, right?
I think your times are maybe a bit long. My usual deal for bright sunny days is to shoot at 200 and dev for 7-1/2 minutes (D76 1:1).
But for extra contrasty situations, I would shoot at 100 and dev for about 5-1/2 to 6 minutes.

When you say "OK results", what do you mean? What are you looking to change or improve?

Cheers,
Gary

 

[tj01]

My next step is to try 6 mins. I find that the pictures are still too contrasty, and very hard to get detail.
It has this high contrast, plasticky feel to the pictures, will upload later to illustrate.

 

[Tom A]

I agree with Gary here. Cut the time to 6 min and reduce the agitation to a minimum. D76 is a moderate developer and will pull down contrast nicely with a reduced development and also in 1:1 dilution it will cut contrast.
Shoot a couple of rolls @ 100 and do 1 roll at 6 min (D76 1:1), agitate every 60 sec (one/two "lazy" inversions) and check it out. Use the 2nd roll to correct, if the first did not meet your requirement. If it was too contrasty, cut the time even further (though keep it above 5 min. as below that you can get uneven development). Also cut the agitation to 1 "flip and tap" every 60 sec.
You can also dilute even further -1:2 or even 1:3 - but that would require more testing as the results can be a bit unpredictable.
I have done Tri X rated at 25 asa (mistake in resetting the meter). I souped it in D76 1:3 for 7 min with 60 sec agitation interval. Looked OK and printed fine - though a bit too flat.

 

[Dwig]

...
You can also dilute even further -1:2 or even 1:3 - but that would require more testing as the results can be a bit unpredictable...

One caution with the greater dilutions: You still need to have enough developer in the tank to develop the film without exhausting. It takes 4oz of D76 full strength to develop a 36 exposure roll. Using less will result in the developer exhausting before the film fully develops. This can be used to limit contrast but is extremely difficult to control.

To properly process one 36 exposure roll at 1:3 dilution you need 16oz of solution per 36 exposure roll. This generally means that you need to use a 2 reel tank with one reel empty and fill the tank with diluted developer.

 

[VitoGuy]

Also cut the agitation to 1 "flip and tap" every 60 sec.

Not to hijack this thread but does over-agitation = over developing? The reason I ask is the last roll I processed seemed to come out a bit overexposed (I'd guess by a half to a full stop) . I developed the roll with D76 at 1:1 for the correct amount of time but I did agitate every 60 seconds for a full 10 slow turns each time. Could that do it?

Cheers!

 

[Ronald M]

Cut time 20% for 200, an additional 20% for 100. End up being 65% of 400 time, not 20x2= 40.

Be very careful with reducing agitation to gentle. It can lead to uneven replenishment quite easily. Better to cut time and or go 10 sec per min instead of 5/30 sec. Sloppy agitation is a killer.
Towards the end, go every other minute, but make the cycles complete so as not to get uneven replenishment.

 

[tj01]

This was 6 mins, very minimal agitation. Still can't decide. But I think for now, I'm not pulling this film to 100.

 

[gns]

This looks like indoors, low light situation. What is the reason for wanting to shoot at 100?

 

[gns]

Here is an example...