Hallo Phil,
with version 8.61 of ExifTool you introduced the new feature that allows to increase and to decrease numerical tags.
Thanks for this feature.
I played with it, selected (accidentically) FNumber for my tests and found the following:
exiftool -exif:fnumber+=-3.0 d:\t1.jpg
Warning: Must be a positive number for FNumber - d:/t1.jpg
1 image files updated
In my case ExifTool really decreased the value from 8.0 to 5.0, but the warning could be misunderstood.
I suggest that this warning is always given in case of decreasing a number (with a negative value).
This is done also in cases where the resultvalue is a valid positive value.
Is this an error?
Thanks in advance
Herb
Hi Herb,
Yes, thanks. This looks like a bug in my validation. I'll fix this.
- Phil
Hello Phil,
thanks for the correction in version 8.62.
Best regards
Herb