underdeveloped neopan 1600@800 D76 1+1

[bowie]

Hello,
I have developed neopan 1600 exposed as 800 in D-76 1+1, 20degrees, 7min (including pouring in and out), agitation first 60sec, and then each 5sec in every 1min. The result: thin negative. What's wrong? The chemistry was fresh, I have also develped TXP 320 D-76 1+1, and it came out perfect as usuall.
Do you think I should use intensifier to improve underdeveloped neopan? It has been exposed correctly
thanks in advance for help

 

[mrred]

How fresh was the film? The faster the film the faster it ages and gets slower.

I noticed that is the exact time of the MDC. If that is where you got it, you should be treating it as a starting point and adjust accordingly.

 

[bowie]

Fresh stuff, expiration date June 2012, kept it in the refrigerator

BWT, any recomendations for neopan 1600@800 in rodinal?

 

[JMcLaug351]

Might be a long shot but how long a time was it from out of the refrigerator till exposure? Just thinking out loud.
JOHN

 

[mrred]

Most of my Neopan work was with Neopan 400, which I had great success pushing to 3200. I mostly used XTol, at that.

I would guess adding an extra minute to your D76 1:1 should give you the density you need.

I would not have a clue with rodinal outside of what MDC suggests.

You might want to give flickr a search, as people tend to post their developer times. It would ball-park you should expect.

 

[ic-racer]

First step, of course, is to determine if the negatives are under-exposed, under-developed or both.
Since you probably did not expose a step wedge on a portion of the film, you have a challenging task. One trick is to look at the film leader and check the D-max. You can also try to print them and see how easy they print, maybe they are really Ok.

The way to tell for sure:
1) expose a portion of the film to a step wedge. If the slope is less then about 0.65, then you have under-development.
2) expose a frame to a zone 1 scene. If the density of that frame is less than 0.1 log-d, then you are under-exposing.

 

[bowie]

Might be a long shot but how long a time was it from out of the refrigerator till exposure?

at least one night

I would guess adding an extra minute to your D76 1:1 should give you the density you need

In the Neopan 1600 data sheets one can find as follows:
1600@1600 -> D76 1+1 -> 9 min
1600@800 -> D76 1+1 -> 7 min

I have just tried Neopan 1600@800 developed 8min + time for pouring in and out. The negative looks excellent!! Seven minuts is too short