T-Max 400 in D76 1+1 - mottling problem

RobC said:

Kodak changed their formulation of D76 a while back so that the chemicals could be packaged together in one bag. ID11 is still in two bags and is closer to the original ID11/D76 formulation but I believe Ilford farm out the production ID11 and possibly Kodak too so although we like to believe these are very old tried and tested formulas, there are always subtle changes taking place which we're not told about. They are brand names rather than fixed formulas. If you want fixed formulas you have to mix your own from individual chemicals.

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Which D76?

Xmas said:

Which D76?

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I don't know, I just heard that they combined it into one bag instead of two like ID11 is. It was discussed in a recent topic which I can't find now.

RobC said:

I don't know, I just heard that they combined it into one bag instead of two like ID11 is. It was discussed in a recent topic which I can't find now.

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http://www.lostlabours.co.uk/photography/formulae/developers/devD76_variants.htm

Just coming back to the agitation thing. Since those are highlights where you are getting mottling it is possible that without sufficient agitation you could get developer exhaustion in those areas which could look like that. Possibly a combination of not mature developer and some developer exhaustion.
So I would use the Kodak agitation routines as well as leaving the stock to mature for 24 hours before using.

Have you tried cleaning the negs with pec-12 and rescanning?


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Uneven development is most always from insufficient agitation.

I have often used 1 roll in a two roll rank, film roll on the bottom, empty reel on top. Only enough developer for one roll. Agitate 30 sec,12 inversions , upon inversion. the two every 30 sec. This is extremely agressive and I never had anything but perfection. You can also roll the same set up. Bill Pierce wrote it up in Modern Photography early 60`s & still works. If it did not work, roller film developing in drums would not work, but it does.

BEWARE OF UNDER AGITATION. TIS A KILLER. FIRST 30 SEC ARE CRITICAL.