Developing Verichrome Pan Film

[gth]

Verichrome 120 film expired 2004 ISO 125

Exposed at EI 100

Developer D-76

Development will be on Kinderman reel.

Any recommendation with regards to age etc.

It's 120 film so sorry if that bothers anyone.

/gth

[Keith Fleming]

gth,

My 1974 edition of the Kodak Darkroom Dataguide shows 5 minutes in D-76 at 68 degrees for "average contrast" in the negative. It was 3.5 minutes for "lower contrast" and 7.5 minutes for "higher contrast." That's the contrast you wish in the negative, not the contrast of the original scene. The Dataguide did not give times for D-76 (1:1).

You also might check Digitaltruth Photo's Massive Development Chart. Along the side of the chart is a link to older developing data for discontinued films.

Keith

[Bill Burk]

gth, from 1954, D76 for Verichrome is 16 minutes.

I don't think it's for the same film but interesting to note a longer time from the past.

I recently found a 100 speed film (APX-100) expired 1997 needs 22 minutes in D76 1:1 to hit 0.62 Contrast Index and only reached EI 80.

So I would expect you to go for the longer time Keith found...

If you went D76 1:1 a time I get the feeling a time "in the ballpark" of 16 to 22 minutes may work.

If you have a few rolls of the film you could do some tests... If you only have one roll, and it has important shots.... Keep looking for more advice.

Generally older film needs more developing time (because it loses contrast) and has less speed than fresh film.

[al olson]

Verichrome 120 film expired 2004 ISO 125

. . .
/gth

Is there a disconnect here? I thought that Verichrome film had been long since discontinued. I was not aware that it was produced as late as an expiration of 2004?

[Chauncey Walden]

Al, I think it was discontinued in 120 around 2002. I bought fresh film about then but haven't checked the "expiration" date. Wish I had bought more!

[gth]

Is there a disconnect here? I thought that Verichrome film had been long since discontinued. I was not aware that it was produced as late as an expiration of 2004?

Yeah, I screwed up in my original post..... I meant of course to say Verichrome PAN film..... sorry about that.... good way of asking a NO SENSE question... yeesh...

Although I managed to get the thread header right.... Sorry about the confusion...

[Jim Noel]

My experience with Verichrome both ortho and pan is that it loses very little with age. I would develop it normally in D-76.

[StoneNYC]

I think if it was expired in 2004 you don't really have to adjust the EI much if at all, or am I missing something. Just use the standard development times. I must be missing something...