Not sure I can add anything worthwhile to this thread, but I will post my non-technical, far-from-great photographer view anyway.
First, I couldn't help comparing this camera to my old Sony HX400, as that is the camera I have had since 2005 (well, four models of them ). I have been in Mexico a week now with my new RX10m4. The first few days out, I thought I should have saved myself a thousand dollars and just bought a new HX400. The new camera is much heavier and I kept moving it slightly as I 'clicked'. I didn't think my photos were all that much better than the smaller Sony. I also had trouble with the macros. If I get as close as I used to with the 400, it is too close and I have to back off. A few times, I backed off so much I had to extend the lens to get closer, it was easier than trying to find the best spot by moving myself in and out. I have learned to hold the camera by supporting the lens with my left hand and have improved stability. I used to hold the 400 on the sides and didn't have to support the lens. The vast majority of my subjects (except macros) have been a minimum of 30 ft. away, but I have a series of shots of a Golden-cheeked Woody shot at approximately 25 ft. and I am going to post some of those. The first posted photo shows the original shot; only the size has been altered. the second post is that same shot cropped, but not sharpened. You can see a blurriness to both. I believe that is due to me moving. Photos 3,4 and 5 are original (only size changed), then cropped, and the third is cropped and sharpened. Now, I can see that more detail does show with the new camera, and if I ever get a chance for closer shots, I feel they can compare to the Cannon slr I have (Cannon D7, D70? Sorry can't remember and I am aboard our sailboat in Mexico right now, so can't check). The Canon doesn't work for me for birding; especially birding during travels. I need to be able to take macros and distance shots without having to change lenses; hence the bridge camera. I am not sorry I got this camera, I just need some time to adjust. If I ever return to writing a blog, I would be happy with posting images taken with this camera. I am posting another image to this, it is an Allen's Hummingbird shot with my HX400; it is not altered except size. It was probably about 15 ft. away.