I had an early Christmas present arrive today in the form of a new (to me) 70-200 f4 L zoom. Possibly not the best day to try it out, but I have often thought this single tree might look good on a grey day ... which is how today has turned out. Can't really tell if the lens is sharp though!
I could buy the Canon tripod ring for it ... only £130, might try one of the alternatives!
Looks better Large against a Black Background.
I spent a while trying to sort out what I had done to either Lightroom or Photoshop as I couldn't get photographs to go to PS from LR and be editable when they arrived ... turns out it is a known bug from the most recent update! There is at least a work-around :-)