This is the camera that put my 50 mp Canon 5DS into retirement. It's not just the additional 10 mp you get with the a7riv, it's also the superior quality of Sony's lenses, the superior dynamic range of the sensors, and the amazing Sony focal systems. I've shot everything from landscapes to sports to fashion with my iv. It never disappoints and routinely amazes---detail and tonal contrast is better than anything I've ever used before. With the Sony 70-200 mm G lens, the iv does a superlative job at just about everything. My Canon bodies and lenses are now a back up system. There's a steep learning curve with the iv, and of course, the raw files are huge and cumbersome, but it's all worth if if image quality is your goal.
This is my go to camera for fashion portraits! It always gets the shot and I am amazed at the low light performance at such high resolution. This camera does take some time getting used especially if your coming from a non-R series Sony camera. It’s ergonomics is 100x better than the previous models therefore making a battery grip obsolete. These are my thoughts this camera has never failed me and I hope to use it for years to come!