Does anyone know of reliable reciprocity failure correction data for Ilford FP-4 Plus black and white film. There is receint (2003) data on HP-5 Plus from Howard Bond. Ilford's own data sheet, besides being too short, contends (unconvincingly) that its single correction plot applies to all its black and white films. Howard Bond did tests for HP-5 Plus, and other films, in 2003. But has anything been done since, or ever, on FP-4 Plus, which requires it more.
Additionally, does anyone have any information on development reduction to accommodate for the increased exposure given these films in reciprocity failure correction?
tnx
Warren
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