Catlabs X80 and Shanghai GP3- Same Film?

paulbarden said:

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.

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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.

Andrew O'Neill said:

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.

Click to expand...

Thanks very much!

Thanks for posting this.

Although the table is huge it's linear; exposure is logarithmic, so many of the rows are not useful (for example, there is little practical difference between 90 seconds and 95 seconds). I've put together a version from this table in stops and half-stops from 1 second to 2 minutes: the table only goes to 100 seconds so I've had to extrapolate the value for 120 seconds.

Useful, hopefully others will find it.