Hi, I just gotten my hands on a box of shanghai films 100 4*5. Wonder if anyone gotten the data about the film.(I tried to find online, but there isn't any reciprocity data on the film)
On long shutter, the film result is quite bad. I suspect that it could be due to film reciprocity failure. I gotten some badly underexpose photos on just 30 second exposure while it doesn't have the same problem on my FP4.
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