Critical error when creating BPM (DSLR data)

I should further clarify: the error is regarding generation of a master flat.

"flat field calibration cannot be performed correctly"

This occurs both in the creation of a BPM, and also if I ignore the error and simply try and integrate the data.

The flat frames are at ISO 100 (same as all the other data) and shutter speed of 1/1oth sec.

So are your bias frames also of the same ISO?

Yes, all the frames are same ISO, same camera.

As an update: I just re-ran the calibrate step but simply checked the "create BPM" box and left everything else as is, i.e. created the other masters at the same time. Everything went perfectly and applied the masters and bpm to all the lights. Don't know if it's a nikon z7 specific thing or a temporary quirk but happy everything is working!

Thanks Vincent for your consideration.

Well, difference would be that you unchecked the create masters? That could be a "bug", as in that it should then warn it can't make a bpm without proper calibrated flats.

Great it works now though! 🙂

I notice in the upcoming new version notes some changes that should help the program run better with sensors like on the z7. I'll keep playing with it and try a different set of data to see if I can find something repeatable that might be useful to you. But as you say, great it works!

Thanks again.

Hi James, @jtphoto,

Thanks for sharing this, do let us know if something odd happens regarding ISO with your Z7 frame. Perhaps upload the data then to our upload server and let us know, so we can test it 😉

Mabula