4x5 efke on dektol

[jaimeb82]

Anyone knows the times for development using 4x5 efke 100iso in constant agitation using a JOBO 2521 tank that takes 6 sheets. I've found timing for non constant agitation only. As a rotatory tool I am using a beseler old rotary thing.

thanks,

 

[Eric Rose]

Umm, Dektol not my first choice. But I guess you are looking for a particular look. Sorry I can't help you with times. Would be interested in your rational for wanting to use Dektol as a film developer. I've done it in the past with Tri-X and got some really cool negs from it.

 

[jaimeb82]

I think I wanted to say Xtol, sorry for the confusion.

 

[fschifano]

Go to Kodak's web site and download the J-109 publication for XTOL here. In it you'll find times for many films using both intermittent agitation and constant agitation in rotary drums. Even though they don't give times for EFKE films it's not hard (with a little math) to figure out the differences between the two expressed as a percentage. Use that percentage to figure out your development time based on the data you already have. Simple. I did a few quick calculations and it works out that you need about a 25% reduction in development time with constant agitation in rotary drums. That number is pretty consistent across 10 or so samples, so I'd trust it for a starting point.

 

[jaimeb82]

I am going to go with 6 minutes 25 seconds at 20C