For photography purists, Canon's 5DS R DSLR delivers outstanding stills at a whopping 50.6 megapixels.

Beautiful 50.6MP stills; Excellent optical viewfinder; Good low-light performer; Affordable alternative to medium-format

Expensive for casual use; Video only up to 30p; Focusing issues in video recording; No built-in wireless

We take a closer look at the highest resolution full-frame DSLR to date in our Canon EOS 5DS R review

Super-high resolution; Robust, weather-sealed body; Excellent autofocus

Relatively limited ISO range; Enormous, difficult to handle raw files; Fixed LCD screen

Canon has long lagged behind Nikon in the race to create SLRs with higher and higher megapixel counts, with Nikon owning the crown since the 2012 release of the 36-megapixel D800 . But Canon retakes the lead with its new EOS 5DS R ($3,899.99, body only) and 5DS .

Highest resolution in class; 5fps burst shooting; Full-frame image sensor; Dual memory card slots; 61-point autofocus system; Intervalometer and time lapse support; Sharp rear display; Solid control layout; Medium and Small Raw capture modes; 1080p video

Limited to ISO 12800; Not a true OLPF-free design; Omits in-camera Wi-Fi and GPS; Lacks built-in flash

With more than double the resolution of its 5D Mark III sibling, the Canon 5DS and 5DS R has set a new record for full-frame DSLRs with their 50.6-megapixel CMOS sensors. The 5DS ($3,699) and 5DS R ($3,899) are built around the same body, controls and most features of the 5D Mark III.

Highest resolution full-frame DSLR; Excellent image quality; Extensive feature set; Optical low pass filter cancellation for sharper images; Weather-sealed body

Potential for moiré under certain conditions; No Wi-Fi; GPS or HDMI out; Lacks headphone jack for audio monitoring

Shutterbug was fortunate enough to secure a loan of a pre-production version of the much-anticipated EOS 5DS R DSLR for testing and we were off and running with it as soon as it arrived.

The 5Ds vs. 5Ds R decision is not an all or nothing one in regards to moiré. It is a more or less decision and the same regarding image sharpness. If you are shooting images of subjects that are likely to induce the moiré pattern and do not have time to work on mitigation in the field (such as when...

Camera still in testing phase..... preparing to print a 17" x 32" enlargement to evaluate Canon's "medium format quality" statement. Will update when I have more information.

Great motorized mirror retraction system......tests indicated 1/2 sec; delay eliminated all mirror bounce/vibration. Camera works great....once I get used to all the control button locations....(after owning a 5D for 8 years !

Have not gotton thru the 521 page manual...; been relying on the abbreviated manual

A fantastic upgrade over my old 5DmkII. Fantastic image quality. Same great user interface. Nice usability improvements (mirror pre-fire, better live view performance etc) Highly recommended for landscape and studio use!

Simply a wow camera. My pros: (1) So much pixel details! (2) Even more details! (3) Menu can be customized as you wish My cons: (1) Poor value for money when you consider my following points below: (2) 6D which came out years ago had onboard WiFi, where did it go

The Canon EOS 5DS R is the top of the range full-frame 50.6 megapixel Digital SLR from Canon, and sits above the Canon EOS 5DS , with a low-pass cancellation filter designed to maximise the sharpness of the sensor.

50.6 megapixel full-frame sensor; A low-pass cancellation filter for improved resolution; 5fps continuous shooting; Fast focus and shutter response; High quality 3.2inch screen; Mirror vibration control system; USB3.0 will speed up image transfer; Customisable picture style options; Excellent build...

Care needs to be taken to get the best out of images; Lacks Wi-Fi; We were unable to shoot as many images in continuous drive mode as suggested