Which high-end full-frame camera should I buy? This roundup contains the majority of current full-frame camera offerings available. Full-frame cameras have image sensors as large as a frame of 35mm film, and for good reason: larger sensors offer the potential for better image quality, low light performance, and dynamic range. If you want a drastic upgrade to the image quality of your phone, or portraits with superior subject to background separation, it’s hard to beat what full-frame offers.
Articles: Digital Photography Review (dpreview.com)