Quote Originally Posted by LJH View Post
It's for HP5+.

And it is more than 20%, as you have reciprocity failure on reciprocity failure.

But my point was, it is not an accurate graph, particularly for shorter exposures.
Well ok - lost that in the thread I guess. But no matter, I'd bet (a small amount) of money that one could barely tell the difference visually between 4, 5 and 6 second exposures.