http://www.shutterbug.com/content/canon-eos-5ds-r-dslr-first-look-review-full-resolution-test-images

http://www.focus-numerique.com/test-2274/reflex-canon-5DSR-bruit-electronique-12.html

Samples

• http://www.photographyblog.com/previews/canon_eos_5ds_canon_ef_70_200mm_f2_8_photos/
• http://www.photographyblog.com/previews/canon_eos_5ds_canon_ef_17_40mm_photos/
• http://www.photographyblog.com/previews/canon_eos_5ds_sigma_24mm_35mm_50mm_photos/

Full test at

http://www.focus-numerique.com/test-2274/reflex-canon-5DSR-presentation-caracteristiques-1.html

http://petapixel.com/2015/06/15/review-canon-5ds-5ds-r-nifty-fifties/

While the 50.6 megapixel sensor is capable of delivering the highest image quality from any Canon EOS camera to date in terms of out-and-out resolution, it does limit it versatility, with the 5fps burst shooting rate not proving fast enough for sports/action/wildlife photography, and the expanded ISO range of 50-12,800 limiting what the camera can do in more testing low-light situations. And as we've discovered after shooting thousands of images with the 5Ds and a variety of older and newer lenses, only the latest and greatest lenses together with careful technique are good enough to get the absolute best out of that 50 megapixel sensor.

• http://www.photographyblog.com/reviews/canon_eos_5ds_review/
• http://www.photographyblog.com/previews/canon_eos_5ds_zeiss_otus_85mm_photos/

And lab samples at

http://www.imaging-resource.com/news/2015/06/23/canon-5ds-r-5ds-first-shots-production-sample-lab-shots-are-now-available

and

http://www.dpreview.com/articles/8388055339/production-canon-eos-5ds-and-5ds-r-added-to-studio-test-scene

First impressions

http://www.thephoblographer.com/2015/07/02/first-impressions-canon-5ds/

The Canon EOS 5Ds and 5Ds R show us a level of detail that we've never seen before in a DSLR camera. The announcement of the 5Ds and 5Ds R brought high expectations and the arrival of these cameras offered few surprises. The Canon 5Ds promised to perform amazingly and it has delivered on that promise.

http://www.the-digital-picture.com/Reviews/Canon-EOS-5Ds.aspx

Samples

http://www.imaging-resource.com/PRODS/canon-5ds-r/canon-5ds-rGALLERY.HTM