Clayton F76 and Delta 100

[scott_mcloughlin]

Massive Dev Chart oddly has two times for F76 1:9. Two separate rows,

one says 6.5 the other 7 minutes, and everything else is the same on

both rows.

 

They are close, but I was wondering what the "official" time was, as

I've heard Clayton's recommended times are accurate. Never saw two

rows like this together on the Massive Dev Chart.

 

Also, I'd be very interested in times for 1:14 for Delta 100. I scan

my films on a Coolscan V, and taming contrast is pretty much a big

goal for all my development efforts.

 

Is there some "standard" time multiplier formula for times when going

from 1:9 to 1:14 (kind of like HC-110 dilutions?).

 

I've Googled like crazy and couldn't find the answers already posted

on the web. But I now have read that everyone who uses F76 seems to

think it's really a great, realiable soup.

 

Thanks.

 

Scott

[jordan_w.]

Hopefully Lowell will show up, he is a chemist at Clayton and should be able to answer your question better than the rest of us!

[User_502260]

Your best bet would be to run your own tests. All published times are starting points.

[lowell_huff1]

The reason for the two different processing times for Clayton Developer and Delta 100 Film is that we are showing two different developers. Clayton F60, 1+9 at 7 minutes and F76 plus, 1+9 at 6? minutes. F 76 plus, 1+14 at 9? minutes. Personally, I prefer the F76, it is a "gamma" one developer with very fine grain and wide processing latitude.

[scott_mcloughlin]

Thanks. My bad. Also, there is a MDC time for 1:14 - 9.5 minutes. I think I'm going to give that one a try first. I've been clipping up some rolls of film, so I can dial in something that works with my tap water and thermometer and so on.

 

What I can't find, in fact, is a 1:14 time for FP4+. The listed time is 5.5 minutes, which is on the short side.

 

Scott