i want to add text box on a layer that has a photo background
Click image for larger version. 

Name:	bleed v1.jpg 
Views:	193 
Size:	168.1 KB 
ID:	1480
because adding text onto a photo is often too hard to read
but it would be GREAT if the background fill of the text box would be partially transparent
and allow the underlying image to bleed through
how ???