I have a Janome 8900 and it has a 1/4" setting on the touch screen. It produces a 1/4" seam with smaller stitches. The default setting is 3/8" on that machines. The advantage that I see to the foot is that it does have a dam on the side that you butt your fabric to. I also have another 1/4" foot for another machine that doesn't have the dam on it but if I run the fabric along the edge of the foot I get 1/4" seam. That machine doesn't have any adjustments on where the needle is so the presser foot is narrower for the 1/4" seam. I like using a 1/4" foot but if adjusting your needle gives you 1/4" seam by using the edge of your current foot I'd probably just stick with that.