My second camera is a Canon 5D MKIII, but if you’re thinking about investing in a full-frame DSLR at this moment I would recommend the Canon 5D MKIV since it is a newer model with quite a few improvements and a higher resolution. I love my 5D MKIII and the 5D MKIV is even better. The Canon 5D MKIII may be les expensive though and more budget friendly if you want to save some money. The 5D MKIV has a full-frame CMOS 30.4 megapixel sensor and it shoots 4K video. It has all the features you can find in a modern full-frame camera and it shoots up to 7.0 fps. Get the best offers for the MKIV at the link above.