Best full frame DSLR 2015: Canon vs Nikon vs Sony

We rate the best pro DSLR cameras, and there are full-frame DSLRs for enthusiasts too

Comprehensive controls
High image quality
No flash
97% viewfinder coverage

The 6D is Canon's answer to the D610 and is the least expensive model in the company's full-frame DSLR range. Its 20.2-megapixel sensor may sound outclassed, but there are hidden depths. Image quality is superb and photos impress with a three-dimensional feel that's the result of the larger sensor's ability to create shallow depth of field effects. However, the 6D's real trump card is price. It's one of the cheapest routes to a new full-frame DSLR, and though its autofocus system and continuous shooting speed are nothing special, you do get integrated Wi-Fi and GPS. If you can do without a built-in flash, the 6D is decent value.

Read the full review: Canon EOS 6D

Nikon Df

9. Nikon Df

Nikon goes back to the future with this beautifully retro style statement

Sensor: 35.9 x 24.0mm CMOS | Megapixels: 16.2 | Autofocus: 39-point AF, 9 cross-type | Screen type: 3.2-inch, 921,000 dots | Maximum continuous shooting speed: 5.5fps | Maximum video resolution: N/A | User level: Enthusiast/expert

Covered with manual controls
Petite, stylish body
No video recording

Given the Df is arguably the most stylish new full-frame DSLR available, you might be surprised it's this far down our list. Well, that's not due to its looks, which are designed to emulate Nikon's classic FM-series 35mm film SLRs. The retro styling also extends to an extensive array of traditional controls, whilst the surprisingly compact weatherproof body adds further appeal. But despite great low light performance, the sensor's 16.2-megapixel resolution is now hard to justify next to more pixel-packed rivals, and the Df wont record video. Don't expect these drawbacks to keep the price down, either, as style doesn't come cheap.

Read the full review: Nikon Df

Sony Alpha A99

10. Sony Alpha a99

An intriguing alternative to a traditional DSLR, but also a risky investment

Sensor: 35.8 x 23.8mm CMOS | Megapixels: 24.3 | Autofocus: 19-point AF, 11 cross-type | Screen type: 3-inch articulating, 1,229,000 dots | Maximum continuous shooting speed: 10fps | Maximum video resolution: 1080p | User level: Expert

Detailed, low noise images
Articulating screen
Disappointing AF system
Ageing SLT technology

Canon and Nikon don't quite dominate our selection, as Sony's Alpha a99 has some compelling features like 10fps continuous shooting and an articulating screen. SLT technology means you get live image preview in the camera's electronic viewfinder and it also enhances video autofocus performance. Image quality is very good, however the autofocusing system struggles to keep up with the competition and the selectable AF points are clustered around the centre of the frame. But more concerning is the future of the A-mount system in general, as Sony is now focussing on compact system cameras based around the E-mount standard.

Read the full review: Sony Alpha a99