Sony A7R IV vs. A7R III: An extra 20 megapixels isn’t the only difference

The Sony A7R IV is turning heads with its 61-megapixel full-frame sensor. But just how much has it improved over its predecessor, and do you really need it? Here's how the two models compare.

from Digital Trends https://www.digitaltrends.com/photography/sony-a7r-iv-vs-a7r-iii/
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