A1? Isn't that a consumer camera? Letus is a universal lens adapter, you just need an adapter ring for your camera. I use the EX-1 as a personal preference. I also believe the express card is a better format, I can import the cards directly into my Mac Book Pro. The EX- 1's options for shutter angles are more robust. In the end, content is king. If you have a good story the difference between the cameras is nill.