Log an enlargement change before reusing an exposure

Record the physical setup

Note the projected image size, enlarger height or relevant scale, lens aperture and paper. ILFORD’s exposure-testing guidance warns that changing enlargement requires exposure adjustment. Keep the old record intact instead of writing a new size beside the old time as though nothing else changed.

Evidence: Manufacturer guidance

Make a fresh test

Use the important image area to evaluate the new setup following the paper instructions. Compare a processed proof before making the full batch. Label the new print version with its dimensions so someone repeating the session knows which settings belong together.