Pixel Pressed.

Special effect filters in photography may be exciting, but I've found that they don't always work very well, as evidenced by the above examples of sepia pixels, color correct, B&W pixels, pixel expansion, and 3-D pixels.  I've avoided these since I got those photos developed years ago.  The one on the bottom left especially makes me cringe.  Don't make the same mistake I did.  Only use filters if you need to.