The first estimated list of Sony a7 IV specs is shared. The features shared by a reader at SAR are simply put together in the comparison table: Sony A7R III, Sony A7R IV, Sony A7 III and Sony A7 IV. Of course, we have to say that the Sony A7 IV specs are well guessed.

On the other hand the Sony a7 IV will be a serious update that is aimed at Sony a7 II and a7 owners, and it will have the same sensor as Sony a7 III, the same body as Sony a7R IV, real time tracking, 4K30P, dual UHS-II SD card slots, and not much more. Check out the Sony a7 iV specs below.
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https://www.dailycameranews.com/2019/11/first-rumored-sony-a7-iv-specs/