Comparing the cameras in Sony's a7 full-frame interchangeable lens mirrorless camera series can be confusing. For one thing, the models have similar names like a7 II, a7S and a7R. Each of the models also has its own strengths.The latest Sony a7R II still sounds a mouthful.

: The best portrait lens you can get your hands on right now for Sony's FE mount is this one. You won't look back.

The Sony A7R II is the second generation of a series that set out to prove how serious a compact system camera can be. With a full-frame sensor, the range has offered image quality similar to some of the very best DSLRs, such as the Nikon D810 and Canon 5DS R . All this remains true of this series.

Fantastic resolution; Great higher ISO performance; Effective OIS

No flash unit; Limited battery stamina

Sony has had ambitious plans for the camera market ever since it bought Konica Minolta's camera business in 2006. But after some initial excitement there were only sporadic periods of activity, and the attention of many photographers and industry observers waned somewhat.

High-resolution full-frame sensor; Small; weather-sealed body; High-end video features including in-camera 4K recording

Menu needs streamlining; Video record button awkwardly placed; Relatively limited range of lenses

Sony has had ambitious plans for the camera market ever since it bought Konica Minolta's camera business in 2006. But after some initial excitement there were only sporadic periods of activity, and the attention of many photographers and industry observers waned somewhat.

The camera is used for landscape, floral and 'things found' abstract work, often in low light for which its noise:iso ability and resolution is ideal. The 16 to 35 lens is fantastic and I can hardly fault the 70 to 200 G series zoom, but being able to use Leica, Petzval etc. as well is the clincher.

Easy To Use; Excellent In Low Light; Fast Shutter Speed; Good Sized Screen; Great Resolution; Rugged

The Sony Alpha A7R Mark II is the World's first full-frame camera with a 42.4 megapixel backlit CMOS sensor, which should deliver improved noise performance. The camera also offers internal 4K video recording, plus a 399-point hybrid AF system, and an updated design compared to the 36 megapixel A7R...

Excellent image quality possible; 5-axis image stabilisation system; Impressive noise performance considering high resolution; Improved range of high quality lenses available; Includes 2 batteries and a charger in the box; Extended ISO range; 4K video recording; Wi-Fi and NFC; Sony PlayMemories...

5fps continuous shooting could be too slow for some; USB3 would speed up image transfers

"I am fortunate enough to own a Sony A7RII. I made my pre-order early with Henry's and very glad I did so! The Sony A7RII is a truly stunning piece of equipment. In my few weeks of owning this camera, I have nothing but amazing things to say about it.

The camera is the best of both worlds. It can shoot high resolution pictures and 4k video in one tiny package. There are some drawbacks like poor selection of native lenses, the jello effect with videos and some autofocus issues, but the positives outweigh the negatives of this camera.

Superb image quality very good high iso performance. Great camera exceeds my expectations. Front dial/on offswitch ergonomics could be improved.

Easy to use; Compact; Build quality

Battery life