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

The Canon EOS 5DS R is a 35mm full-frame digital SLR camera with a 50.6 megapixel sensor, the highest number of megapixels ever seen in a full frame sensor, and and a low-pass cancellation filter that maximises the sharpness of the camera's sensor (the only difference between the 5DS R and the...

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 ($2,699.00 at Amazon) . Both cameras share the same 50.6-megapixel full-frame image sensor, with the EOS 5DS R enjoying a slight edge in resolution thanks to an additional filter that offsets the effect of its optical low pass filter (OLPF). Longtime Canon users will feel right at home with it, as its body and controls are the same as you'll find in the EOS 5D Mark III, but we're going to stick with the Nikon D810 ($2,499.00 at Amazon) as our Editors' Choice in this class of D-SLR. The D810 doesn't pack as many pixels, but its ISO can be pushed higher and it's a good deal less expensive. Design and FeaturesIf you've picked up a 5D Mark III ($2,790.00 at Amazon) , you've picked up the 5DS R ($3,899.00 at Amazon) . It's a bi...

The Canon EOS 5DS R offers the most resolution you'll find in a full-frame SLR, but its high ISO capabilities are limited.

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

The image files this camera produces are just stunning. Unbelievable detail with good L lenses. Since I have the 5D Mk III also (and have had the Mk II and Mk I), the ergonomics are essentially unchanged.

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

The Canon EOS 5DS R delivers slightly more resolution and sharpness than the regular 5DS model at a very slight increase in the risk of producing unwanted moire effects. In reality these effects actually proved difficult to create on purpose out in the field, and as they can be largely removed.

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

Ten years ago Canon launched its 12.8MP EOS 5D, a camera that opened the door for many enthusiasts to shoot with a full-frame sensor. Fast-forward a decade, and Canon has continued the 5D line with the launch of the S and S R models.

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

The Canon 5DS R, the highest-resolution EOS body to date, is an all-around striking camera that captures some seriously impressive, incredibly detailed photographs. The higher resolution sensor does make shooting technique more crucial though, and the video features and ISO range are limited...

Phenomenal resolution and sharpness; Fine Detail Picture Style is like in-camera Unsharp Mask; Excellent print quality; Decent high ISO performance; Improved normalized dynamic range compared to 5D Mark III; Decent burst speed with good buffer depths; Built-in intervalometer & timelapse movie mode

AF speed tested closer to consumer-level DSLRs; Dynamic range lower than competing models from Nikon & Sony; Lack of OLPF means subject to more aliasing artifacts with some subjects; No 60p video frame rate; No headphone jack; Timelapse video is only 1080p