You can see the full specs, MTF graphs and image samples on Samyangs product page. Preorder should be online soon at BHphoto.
Samyang writes:
The new tiny lens is designed for landscape and astrophotography photographers. Thanks to its compact size and light weight with minimized coma and short minimum focusing distance, you can enjoy photography day and night. This lens provides outstanding corner-to-corner image quality from maximum F1.8 aperture and smooth and natural-looking bokeh. The new features of Focus Hold Button and LED indicator maximize the usability for capturing the night sky.
In a surprising move Sony announced two small updated version of their current A7rIII and A7rIV cameras. In both cases the cameras get a small “a” suffix.
So what’s new?
LCD resolution has changed from 1.44 million dots to 2,359,296 dots
They both support USB 3.2.
The Sony logo under LCD monitor has been removed
There are also small changes in their battery life
What to Do with Your New “Nifty Fifty” Fast Prime Lens (Explora).
My Base Settings for Sony Mirrorless Cameras – a7R IV, a1, a7C, a7S III, a6000, a6600, a9 II (TheSnapChick).
Tamron 70-300mm f/4.5-6.3 Di III RXD lens review with samples (Christopher Frost).
Sony FX3 The REAL Pocket Cinema Camera (Armando Ferreira).
Sony 50mm GM test at DC.watch
50mm GM test at Xitek.
Sony FE 100-400mm f/4.5-5.6 G Master OSS review (DigitalCameraWorld).
Sony a1 Photographing Wolves With The 200-600mm G Lens (PhotoPXL).
Crispy Quality. Sigma 35mm F2 DG DN Contemporary Review (ThePhoBlographer).
What Makes the New Tokina 65mm T1.5 Cinema Vista Lens So Sweet? (Explora).
Test Tamron 17-70mm F/2,8 Di III-A VC RXD : un zoom APS-C performant et stabilisé pour hybrides Sony (Lesnumeriques).
Pergear 10mm f/8.0 (inkl. vs. Samyang 12mm f/2.0) | Review [Deutsch] by Toby Horn. The Northrups call it: DSLRs are DEAD!