The imported layer is not grayscale

[Ahmed_S_Nassar (Asn)]

Hello guys!
I have an issue whenever I import a heightmap unreal says it’s not grayscale and I’m sure it is grayscale and it is 16bit format as well. Doesn’t matter how many pics I try it isthe same issue
even I got graycale pics from so many sources but still the same issue
my question is is there any other format to take in mind about grayscale like the RBG White and black colors?

Have a good day…

[AtomR]

I don’t know if you corrected this problem. But I corrected this using gimp by setting the image > mode > grayscale

Image > precision > 16 bit perceptual gamma

and export png with 16bpc GRAY

Hope this helps