Some differences may be important to you, some may not.
As an A7R2 shooter who hasn't kept abreast of all the improvements, I was surprised to read that the A7R5 has an anti-dust shutter mechanism, where the "Shutter is closed to protect the sensor". Is that true ?
Yes the r5 has that anti dust mechanism which basically closes the shutter completely when off. I will say it's amazing that i have yet to see any dust in my photos ever since i got the r5. That feature is really handy for when you are changing lenses. That's another reason I wanted the r5 so badly besides the crazy good af for portraits which always nagged me on the r3! 😀
zeitlos wrote:
Is the af of the A7R IIIA better than the one of the A7 III? Or are they the same?
The AF systems in each are very similar in performance. (I have both cameras) The edge I'd say would go to the A7III. I notice it especially with fast moving subjects as my hit rate is a little better. But I'm usually shooting with the R3 - it's a joy to use and that sensor is hard to beat.
Not sure about the a7r3, but I still use an a7r2 for family portraits and landscapes/cityscapes. It's a fantastic camera that can be had for a bargain. For my use, upgrading wouldn't be of much use.
DBLA wrote:
The AF systems in each are very similar in performance. (I have both cameras) The edge I'd say would go to the A7III. I notice it especially with fast moving subjects as my hit rate is a little better. But I'm usually shooting with the R3 - it's a joy to use and that sensor is hard to beat.
Yes. The A7iii focuses a little bit faster than the A7Riii.
I think it's also worth mentioning that the focusing area of the A7Riii does not quite cover the whole frame. Sometimes, if you shoot in portrait orientation and your subject has their eyes near the top of the frame... it's outside the area of PDAF coverage, so focussing there isn't quick and reliable like you're used to. It's the only mark against it in my view. The A7iii and all subsequent R models had AF points covering the entire frame, essentially. But for the A7Rii and iii it doesn't quite cover the farther ends of the frame.
I have used the A7RII with the Zeiss Loxia lenses for years.
I bought an A1 2,5 years ago mainly for wildlife, but sold the A7RII with the intention to use it for all photography.
Fast forward, and I bought a new A7RIII, the A1 is now limited to wildlife and birding.
I have also had the A7RIV for a short time.
I personally favor the 42mp sensor above the 61mp or 50mp stacked sensor for general photography, such as cityscapes, landscapes, portraits. The colors and tonality in the images are more natural to my eyes than especially the 50mp stacked sensor, that delivers great detail and clarity, but somehow lost some of the subtlety and aesthetics of the 42mp A7RIII. So much so, that I returned to the A7RIII for use with the Loxia lenses.
So in summary, the A7RIII is still a fantastic camera when it comes to imaging.
I used to have 2 A7r3's and the only real reason to have the current versions is if you really need the benefit of the newer AF capabilities. For landscape and any work where you don't need lock on AF etc it is still an excellent choice and I think the 42mp sensor is really the sweet point for 35mm sensors