HP5 exposed at ISO 100 - what to do?

[rob_x2004]

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Never tried the PanX.

On the Rodinal you would have to laugh, I started out at the times on the box which if I recall are around sixteen, eighteen mintes. Maybe if I lived closer to Bern I could have slipped the negs into the accelerator to shoot some stuff through them.

Anyway I brought test strip developments back down in minute intervals to six minutes and looking at them figured that about twelve and a half was probably about right for me, so now work off base 13.

For 400iso I am on 11.

[Mark Antony]

Yeah I understand that.

 

If you say the amount of development is time by concentration, then what I was driving at was reduce development to account for the over exposure. I am not sure reducing concentration is always the answer.

 

Less development. Maintain contrast, agitate. Obvioulsy within time temp concentration mix. Whatever range you can maintain I reckon.

.

 

I know what you are driving at, shorter dev times in-order to compensate for high contrast/over exposure.

 

But I'm afraid it doesn't work that well because short dev times should be avoided because of the lack of control.

Case in point Ilford Pan F is quite contrasty (I use it at 25 ISO+1 Stop). Dev time in Rodinal at box rating (50 ISO) is 5min, so if you over-expose of shoot in sunny conditions you may end up needing a time of 3min.

This is just far to little time to control agitation and could give problems with streaking but will certainly give high contrast negs that will be hard to print.

 

Take that same film/exposure combo and develop it in Rodinal 1:100 for 15 mins sparing the agitation will yield normal contrast.

Better still do what a photographer friend of mine does:

Take PanF expose it at 25 the stand dev (no agitation) for 1 hour at 1:200.

his negs (120) have a tone which is incredible highlights are held shadow detail is well defined.

While lower concentration is not a panacea for all uses, it does at least give you a level of control.

 

next time you shoot slow film in very bright conditions shoot 1 roll deliberately at +2 stops and stand dev it 1:200 Rodinal for an hour then shoot your second roll normally and process it with the shortest dev time you can Rodinal 1:25

You will be amazed!!

The Above is Adox 25 on a sunny day Rodinal 1:100

[telewatt]

......Better still do what a photographer friend of mine does:

Take PanF expose it at 25 the stand dev (no agitation) for 1 hour at 1:200.

his negs (120) have a tone which is incredible highlights are held shadow detail is well defined..........

 

..normal you should have problems with "clouds" and "shifting" of the borders of shadows and highlights..?..

 

regards,

Jan

[Mark Antony]

..normal you should have problems with "clouds" and "shifting" of the borders of shadows and highlights..?..

regards,

Jan

 

Not sure what you mean Jan, but if you are taking about adjacency effects, or the heightening of micro contrast between areas of shadow and highlight, then no I haven't seen those issues.

But I don't truly stand dev myself just very dilute dev over a long time with some agitation.

The guys I know who stand dev do it for 1-2 hours at 1:200-1:300.

I can't comment on that, it's too extreme for me especially with the 35mm format.

here is a good thread on it:

http://photo.net/bboard/q-and-a-fetch-msg?msg_id=008De0

Mark

[simonpg]

I would suggest you have the film pull processed for 100asa metered exposures even though it is only 2 stops.

 

See the link below, which is from Ilford's web site - they talk about 400asa-3200asa metering and processing. But no reference to over exposing it - so I think there would be less harm in pull processing it than not (although developing for the nominal 400asa rating should not cause much of a problem). Read the fact sheet and discuss it with your lab.