Response to Ilford HP5+ exposed @ ISO 200..Do I develop this film at 200 or 400?

If you have experience with HP5+ at ISO 400 and have a development time you are comfortable with at that ISO, then cut your development time about 15% for ISO 200. As mentioned above, this assumes a normal (or high) contrast range of the scene. If the contrast range of the scene was low (completely overcast day, etc.) then you might want to use your normal ISO 400 development time. There really are no "standard" development times because of differences between enlargers (diffusion vs. condenser), agitation technique, etc.

[ Previous | Next ]