[Leica] Film exposure error - how to correct it

[dankhong at gmail.com (Dan Khong)]

I would develop for ISO 400. 

Sent from my iPhone

> On 16 Aug 2017, at 5:21 PM, Peter Dzwig <pdzwig at summaventures.com> 
> wrote:
> 
> All,
> 
> I put my M3 back in to use over the vacation. I was exposing the film in 
> it as
> ASA400 assuming that I had one of my usual films in it.
> 
> HOWEVER ( :-( ) I found that I had a roll of 125 ASA FP4+ in it when I 
> came to
> the end of the roll. When I started using it I had noticed that I had 
> already
> exposed some 10 frames. So I have 10 frames exposed at 125 ASA and 25 - or
> thereabouts - exposed as 400 ASA. Most of the shots taken when I was 
> assuming it
> was 400 were exposed in the region of f8 - f16 at 1/500th.
> 
> I send film to Ilford to process. My question is: how should I tell them to
> develop it?
> 
> I think I have the following options:
> 
> (i) DON'T - just bin it and write it off to bad luck!
> 
> (ii) Develop it as (say) 200 ASA, accept that some will be under-exposed 
> and
> that the rest will be over exposed and sort it out when I scan the film 
> and play
> with it in PS or NikFX (or whatever). The short exposure times on the 400 
> ASA
> shots may help as they will be on he darker side.
> 
> (iii) Develop it as one or the other (125 or 400 ASA)
> 
> Any other thoughts/recommendations?
> 
> Peter
> 
> PS I know that I should shoot a whole roll before i forget what the film 
> is and
> go off on autopilot :-)
> -- 
> 
> ===========================================================
> Dr Peter Dzwig                
> 
> 
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information