PS CS6: Why is filters / distortion / polar coordinates greyed out?

MixPix

I'm New Here
May 2, 2015
13
0
rgphotographic.blog
I am trying to create a circular pano but find that "filters / distortion / polar coordinates" is greyed out. Anyone know why? Is it an image size problem? I am on a iMac with High Sierra.
 

Photorex

EOS RP
Nov 19, 2016
259
44
Are you probably working in LAB mode? Or do you have 16 bit mode active?

Try RGB mode or 8 Bit.

Frank