Are You Ready to Be First In Line? Sony a7R IV Preorders Go Live at 10:00 ET. Start Here! More Information...

The just-announced Sony a7R IV becomes available for preorder at 10:00 ET today. I like what I see. Many of the feature updates of the a7R IV show that Sony is listening and this model promises to be quite impressive.
 
Here is the Sony a7R IV compared to the Sony a7R III from a specifications perspective.
 
Highlight Sony a7R IV Features
 

• 61MP Full-Frame Exmor R BSI CMOS Sensor
• BIONZ X Image Processor & Front-End LSI
• 567-Point Phase-Detection AF System
• UHD 4K30p Video with HLG & S-Log3 Gammas
• 5.76m-Dot Tru-Finder OLED EVF
• 3.0" 1.44m-Dot Tilting Touchscreen LCD
• Up to 10 fps Shooting, ISO 100-32000
• 5-Axis SteadyShot INSIDE Stabilization
• 240MP Pixel Shift Multi Shooting
• Bluetooth & Wi-Fi, Dual UHS-II SD Slots

Here is Sony a7R IV visual comparison to the Sony a7R III. Notice the changed controls?
 
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Sony Alpha a7R IV Mirrorless Digital Camera: B&H | Adorama | WEX
 
Sony VG-C4EM Vertical Grip: B&H | Adorama | WEX