I took my Elan 7e down to the camera shop last week and hooked it onto a sigma 20mm wide angle, it has an f/stop of like 1.8 and used it was 300 bucks. Let me tell you it was cool! It let in tons of light, and was just right not too extreme. It is Sigma's high end line i can't remember the code though DL maybe? Anyways its really nice, and it will save you a couple bucks.