I have Lightroom CC (Ver 2015.1.1).
In the Develop module, under Effects, the Dehaze slider is not active. It matters not whether the picture is jpg or raw. The slider is visible in the Effects section but is greyed out, and is not usable. Does anybody know how I activate the Dehaze slider?
What Process version are those images set to?
Dehaze filter only works with 2012 (Current) process. You find that in the Camera Calibration section in the develop module.
Try to update those files to the 2012 (Current) Process.
Let us know if that helps
Thanks Akash, that worked a treat. Problem solved!