Grayscale image is turned to RGB

[kirantpatil]

Hi,

I tried to use density-conveter on grayscale image and output images are in RGB. I mean now it bit depth is 24 bits compared to 8 bits in original image.

How to retain the grayscale image bit depth ?

Thanks.

[patrickfav]

Do you have test images? What options did you use (From whicht to which compression, ...)?