Reasons to upgrade!
One: Improved auto focus with new modes including bird eye detection.
Two: Increased resolution from 24MP to 33MP with no loss of high ISO capability.
Three: Improved ergonomics. Same body shape and size of the A7SIII, A7RIV, etc.
Four: CF Express Type A slot allows for faster clearing of the buffer and longer burst shooting.
Five: New file modes including HEIF and 4K 60p.
Six: Colors more closely match the new cameras such as the A7SIII and A1.
Seven: Includes a new web cam mode better ease of use as a streaming camera.
Eight: Front facing screen for vloggers.
Nine: S-Cinetone and focus-breathing compensation for video shooters.
Ten: New Menu, Sensor, LCD and EVF.
Ten.5: Very convenient duel native ISO of 3,200.
One: Costs $500 more than it’s predecessor the A7III possibly more depending on sales.
Two: Image quality of the two cameras very similar especially for stills.
Three: Only one card slot supports CF Express Type A.
Four: Resolution increase minimal in practice. See chart below.
Check back as these lists may be subject to change or upgrade as I learn more about this brand new camera.