Monday Daily Xpress Big One

[omani]

17a;not a clue:
I have; h*l*t*n*

Any help appreciated with thanks in advance

[emeritus]

Half-tint
Half-tone

What is the clue ?

[dannyk13]

Halftone

[Psybbo]

half tone

[slaney]

Hesitant?

[dannyk13]

For Emeritus. CLue:- Conversion of image into series of different sized dots by photographing it through a fine screen.

[emeritus]

Thanks Danny

[slaney]

Ah well - I thought "not a clue" was the clue :)

[grasscarp]

so did I slaney

[JandyAF]

Just shows how important it is to give the full clue!