Originally Posted by
Dave Humphries
Hi Sam,
To clarify (if not for you, then for others new to the game); the Lens profile corrections and the Perspective corrections are for two different things (causes) - they just happen to be in the same area of controls (in ACR and LR), because they both affect image geometry.
Personally, I always have Lens Profile corrections enabled, even if I can't actually see the effect, ditto the CA (Chromatic Aberration) on the Color tab - even if converting to mono, it may well make the image that bit sharper if it is on.
You decision to apply the vertical adjustment manually was wise, as was the decision not to over do it and make them all stand dead vertical.
I like the latest version best for that reason, although in that; the sky seems a little too pale now.
and
Depending how it was applied, I wonder if the vignette was responsible for the apparent inversion of shading in the sky (e.g. if you were applying one that lightened the corners and edges of the shot), it could have overwhelmed the slight natural shading there.