This is a commercial shooting, which requires both video shooting and photography. I suggest 5D3 and a DV. Small dv is not expensive, and the shooting effect is quite good. However, in order to look more "professional" at the wedding, it's best to buy a shoulder-type (there are also grades below 10 thousand, and there is no pressure to take wedding photos. If the budget is tight, it will be better to switch to 6D, which is not as good as 5D3, but it is also very good. Although SLR can shoot video, I don't think it is necessary. Although it is said that shooting video with SLR rarely burns CMOS, it is not without it. After all, the 5D3 fuselage costs more than 10,000 yuan. If it's a wedding, in case the machine breaks down, photos and videos can't be taken. I'm afraid it won't be such a good job It's no joke that people pay you to shoot.