See also Sony Image Stabilization.
Sony is unlikely to take this advice, but here goes with the top five* things Sony can do to take its full-frame mirrorless lineup to a much more credible level.
- Deliver a 36 - 56 megapixel mirrorless camera with an EFC shutter (zero vibration), so that peak image quality can be reliably achieved. Bonus points for a medium format sensor.
- Add a lossless-compressed 15-bit file format. Keep the 11+7 bit format for those who want it, but deliver ultra high image quality for those who want it (and make the electronics ultra clean, so that it really does matter).
- Deliver cameras with robust high strength lens mounts, not the toy-grade build of the current lineup that is seeing replacement products! Bonus points for weather sealing.
- Deliver 5-axis sensor image stabilization in this high-resolution camera.
- Deliver a 4MP EVF, built-in.
- Make the camera larger (somewhat): the buttons are too small and fiddly compared to a Nikon D810. A7R with gloves (cold) means taking gloves off. No fun.
- Aggressively move the lens lineup forward, perhaps by paying Zeiss to extend the Loxia line quickly and with ultra high performance lens designs (Zeiss Otus grade, but half the price and near-perfect f/2.8 designs).
- Bonus points: near-zero blackout time, add 4K video, remove Sony crapware from menus, add a “My Menu”, offer raw-only shooter mode (eliminate all JPEG cruft, have right proper raw histogram).
None of this is particularly difficult, but it would yield tremendous credibility.
* Five or even three improvements are enough, provided that #1 is fixed.