Delta 3200@6400 in new Rodinal

[Stoo Batchelor]

Hi Everyone

Just a quicky

Tonight I wish to develop some recently exposed 120 Delta 3200 rated at 6400 in Rodinal, rather than the usual ID11 that I normally use.

I have done a quick search with no results, so refered to Les McLeans book. His recommendation is for 35mm film and suggests a 1 to 10 ratio for 12 minutes @ 22 degrees.
As I am developing 120 film should I make an adjustment to the 1 to 10 ratio, the 12 mins development time or just develop at say 24 degrees to make up the contrast difference that Les mentions between 35mm and 120 film?

Your help will be, as always, very much appreciated.

Regards

Stoo

 

[DeanC]

The Massive Dev Chart suggests 20m in 1 + 25 @20C.

 

[Stoo Batchelor]

Thanks Dean

I did look there but did not know how to use the chart (or should i say I was too lazy to read how!)
A very handy tool

Thanks again

Stoo

 

[Stephanie Brim]

I would go for 1+50, personally. Gives me good results when pushing Tri-X to 1600 and 3200.

 

[Stoo Batchelor]

I would go for 1+50, personally. Gives me good results when pushing Tri-X to 1600 and 3200.

Thanks Stephanie

Would that be the one stop to 6400 with Delta 3200 and developed 1 to 50?

Regards

Stoo

 

[Stoo Batchelor]

Thanks Stephanie

Would that be the one stop to 6400 with Delta 3200 and developed 1 to 50?

Regards

Stoo

And for 20 mins?

Stoo

 

[Stephanie Brim]

Half the strength of 1+25 so you'd have to double the time. The reason most people use a less dilute solution with Rodinal when developing is because times can get long...1+50 for Delta 3200 pushed to 6400 would be 40 minutes...and that's with agitation every minute. 1+50 will give you finer grain, though...it's a tough choice between sitting and babysitting a tank for 40 minutes or a slightly grainier output with a less dilute solution.

 

[Les McLean]

Half the strength of 1+25 so you'd have to double the time. The reason most people use a less dilute solution with Rodinal when developing is because times can get long...1+50 for Delta 3200 pushed to 6400 would be 40 minutes...and that's with agitation every minute. 1+50 will give you finer grain, though...it's a tough choice between sitting and babysitting a tank for 40 minutes or a slightly grainier output with a less dilute solution.

Stoo I'd increase the development time by 25 to 30% which is roughly equivalent to one stop in contrast, at least in my estimation.
Higher dilution will produce more noticeable grain not finer grain.

 

[Stoo Batchelor]

Half the strength of 1+25 so you'd have to double the time. The reason most people use a less dilute solution with Rodinal when developing is because times can get long...1+50 for Delta 3200 pushed to 6400 would be 40 minutes...and that's with agitation every minute. 1+50 will give you finer grain, though...it's a tough choice between sitting and babysitting a tank for 40 minutes or a slightly grainier output with a less dilute solution.

Thanks again Stephanie

As I want to keep the larger grain I will go with the 1 to 25 for 20 mins. Ilford agree with this on their site. As long as I get printable results I can modify from there.

Off to the darkroom

Big thanks to both you and Dean for your help

regards

Stoo

 

[Stephanie Brim]

Awesome. Be sure to post the results.

 

[Stoo Batchelor]

Stoo I'd increase the development time by 25 to 30% which is roughly equivalent to one stop in contrast, at least in my estimation.
Higher dilution will produce more noticeable grain not finer grain.

Nearly misseed that Les!

So if I stick to your recommendation in the book but add the 25 to 30% for the 120 i.e 15min-ish @ 22 degrees?

Cheers Les

Stoo

 

[DeanC]

Thanks again Stephanie

Big thanks to both you and Dean for your help

Happy to help. Post some results if you're able...

 

[Stoo Batchelor]

Just to update

I went with the 1 to 25 at 20 degrees in the end. The negs look good but the proof will be in the printing.

I have a good few rolls to develop yet but will for sure be posting the results.

Thanks again all

Regards

Stoo