Photo Effect Studio has some wonderful filter or effect for your photograph, such as what above said, Pencil sketch, Pen sketch, Color sketch, etc.
The function of 'batch convert' is simple and practical, for example, you selected 'Pencil Sketch' from mainmenu--B&W, the Pencil sketch panel will appear, it has a 'Show batch convert' button, click it then dropdown the batch convert panel, Please select a folder with photos to convert, and select a folder to save the works, finale click the 'convert' button. Now, You can have a rest while it working.
All effect or filter panel has 'batch convert' function except 'ColorAdjust'.
The Pencil sketch, Pen sketch is wonderful, but It has a pity for 'Pen and Ink' effect. Sometimes, the effect is not perfect.