Re: Thinking of "downgrading" from Sony A7 to Nikon D7100...: Sony Alpha Full Frame E-mount Talk Forum: Digital Photography Review
![High ISO Comparison: Canon 5Ds R Vs. Nikon D810 Vs. Sony a7R Vs. Pentax 645Z - Camera News at Cameraegg High ISO Comparison: Canon 5Ds R Vs. Nikon D810 Vs. Sony a7R Vs. Pentax 645Z - Camera News at Cameraegg](https://www.cameraegg.org/wp-content/uploads/2015/05/iso-12800-5ds-r-d810-a7r-645z.jpg)
High ISO Comparison: Canon 5Ds R Vs. Nikon D810 Vs. Sony a7R Vs. Pentax 645Z - Camera News at Cameraegg
![Amazon.com : Sony a7R Full-Frame Mirrorless Digital Camera - Body Only : Compact System Digital Cameras : Electronics Amazon.com : Sony a7R Full-Frame Mirrorless Digital Camera - Body Only : Compact System Digital Cameras : Electronics](https://images-na.ssl-images-amazon.com/images/I/710k6C9nCeL._AC_UL600_SR600,600_.jpg)
Amazon.com : Sony a7R Full-Frame Mirrorless Digital Camera - Body Only : Compact System Digital Cameras : Electronics
![Nikon D7100 review - high ISO & auto-focus tests, compared with the D7100 - featuring 51 autofocus points, no low-pass filter, 24 megapixels - Underwater Photography Guide Nikon D7100 review - high ISO & auto-focus tests, compared with the D7100 - featuring 51 autofocus points, no low-pass filter, 24 megapixels - Underwater Photography Guide](http://www.uwphotographyguide.com/images/nikon-d7100.jpg)