[Leica] Film exposure error - how to correct it

[Peter Dzwig]

Thanks Nathan.

Peter

On 16/08/2017 12:31, Nathan Wajsman wrote:
> As someone else has suggested, you should probably decide based on the relative importance of the images. Also, assuming that you are going to scan the negatives, I think it is easier to deal with underexposed than overexposed images, which would imply developing for 125 and dealing with the underexposed images at the scanning stage.
> 
> Cheers,
> Nathan
> 
> Nathan Wajsman
> Alicante, Spain
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>> On 16 Aug 2017, at 11:21, 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				
>>
>>
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-- 

===========================================================
Dr Peter Dzwig