Götz Echtenacher said:
“maybe it should rather be named “focal length grouping” but the fact is that it says “grouping” and not something else”
Indeed, and I v usefuly understand that now, but previously I misleadingly understood something else, so it’s not just being pedantic. Needless suffering!
“you can give RC more precise data (from a good alignment) and then tell it to apply this rigidly to certain images”
So that is possible, to rigidly specify, and RC obeys?
Steven Smith said:
“RC is not trying to calculate each one”
but doesn’t it still have to do that in order to
“takes and average of the lens distortion from all the photos”?
All great info, understanding improving - thanks.