Digitaltruth Photo

Is there any tips of how to develop an ilford FP4+ film when it's exposed on the wrong side. I mean, I had the film wrong side up on the cassette so that the non emulsion side got exposed. I'm using D 76 developer at 20 celsius.

Process as normal; nothing you can do to chemically reverse shooting through the base.

It probably wont be as bad as you think; perhaps a bit soft depending on what you were shooting.

You have nothing to loose...

I think you should develop for at least 50% longer time as there is the anti-halation layer you have gone through and it would cut down the light reaching the sensitive silver emulsion.

I second the longer development time as the negative will be underexposed. The first sheet of film I ever shot I had the exact same thing happen, and I couldn't comprehend what had gone wrong. The negs were really thin.
If it's an important shot, shoot one more sheet the same way and test with 50% more, like earlier stated, and based on that - use your best judgement.

The only thing which will be accomplished by developing longer is increased contrast. Ypu may want to try it to rescue the film for maybe at least youwill retrieve the highlights and mid-tones.