Bad Film Or Bad Washing?

[haryanto]

I buy lot 10 pack of 25 Delta 100 Ilford, that expired in dec 08, got this problem as attachment,
I shoot with that delta 100 and tmax, when washed the film the water a bit high temp about 29C, I also dev TMX 100 and washed at the same time but has no problem, anyone knows about what happened , many thanks

 

[Ian Grant]

29°C is rather high for B&W films, it might soften the emulsion slightly and if your water's not that good could lead to particles adhering to the film. Tmax's hardening might be slightly different.

Looks like a wash problem though rather than a problem with the film itself, maybe you should be filtering your wash water.

Ian

 

[haryanto]

I already filtered my tap water 2 filter 0.1 micron ( I forget what specification of my filter), yeah it's possible that kodak hardened differently from ilford, thanks for quick respond Ian

 

[JBrunner]

It looks like dirt to me, some before exposure, and some after.

 

[haryanto]

all of my delta100 about 15 sheet got the same problem, but the tmax is not same location shooting n same time loading, thanks for ur comment Brunner

 

[JBrunner]

all of my delta100 about 15 sheet got the same problem, but the tmax is not same location shooting n same time loading, thanks for ur comment Brunner

Have you examined the negs with a strong loupe? That could reveal a lot. Dirt and debris are pretty recognizable compared to processing or emulsion defects.

 

[Ian Grant]

If the film was softened in the washing it would be more prone to dust etc at the drying stage. But it does look like dirt/dust. If it's a neg scan then any problem tends to be accentuated.

Ian

 

[haryanto]

yeah I already examined with 10x loupe, if the dirt or debris cause it, the tmax will got the same problem, because i loaded my film holder at the same time and with the same changing bag, i always get dust in my film but never liket that, n never got any dirt in my holder or my changing bag, always clean both before loading film

 

[Ian Grant]

Two tips, never load film in a changing bag and never wear a woollen sweater when loading film.

John Blakemore, the British photographer, always wears a fisherman's smock, this helps him keep his negs dust free, in fact he now wears one all the time

Ian