I'm curious what most shooters out there prefer in terms of aspect ratios. Many cameras out there let you choose from a wide range of aspect ratios while shooting and I've been wondering what people actually use. I personally prefer the 4/3 (3:4) ratio because it's close to what I need for 8x10, 11x14 and 16x20 inch prints (my most common print sizes) and it's perfect for the iPad (which has a 3:4 ratio screen). If I owned a camera that had the option of selecting a 4:5 ratio then I might choose that since it's perfect for 8x10 and 16x20. I know some people like the 3:2 ratio since it's the exact ratio needed for 4X6 inch prints (the most popular print size in the US). Of course, back in my medium format film days I loved the 1:1 ratio.