Andrew, I'm interested to see a reciprocity chart. I'd like to have a starting point to apply to the X80, for which no reciprocity data has been presented, as far as I can tell. Thanks.
Here it is. Sorry, it's not clear and in Chinese...but pretty easy to figure out. Column one is metred exposure. Column two is compensated time. Column three is development time % decrease. The chart goes up to 100 sec metred. I've used it in the field, and it works fine. I have it on my phone.