I own and use the Sony A9 (ILCE-9/B) since August 2017 and had sufficient time for testing, with landscape, nature and street photography. I mostly used the Zeiss Batis 85mm. In summary, I can say that this is a really strong camera, and it better be at with this price! Is the camera perfect? - No! Is it worth the money? This depends on your needs, since it is not necessarily superior to the newly released and cheaper a7riii.The specs are of the a9 are probably widely known by now: Full frame with a 24MP sensor, 20FPS (with certain lenses at least), and 693 focus points. I'll go right into my review, and compare the camera with my previous camera, the Sony a7r (not: a7r ii ). It feels very nice in the hand because of a slightly extended grip. The camera has an ingenious joystick, which can be used to set the focal point. The a9 is slightly heavier than the a7r, about 200gr. As often advertised by Sony, the battery life is extended in comparison to the a7 line, which I can confirm. A great achievement by Sony is the super high quality of the viewfinder, which comes close to an optical device. New is also a touchscreen, which I occasionally use to set the focal point. Professionals will appreciate the second memory slot, of which only one is high-speed.But now to the pictures and the 20fps. This speed can only be achieved with newer lenses, of which I have none. I used my Zeiss Batis 85mm, Sony Zeiss CZ 35mm f2.8 and the 70-200mm f4 which reach 15fps. This speed opened up a new photography world since I can now focus on shots in movement. The a7r was good for landscapes, if not outstanding. For everything that moved, she was very stubborn, and the AF was often wrong. With the a9 I move in new spheres. With 85mm, I was able to photograph bird's noses, from which water pours off, or sauces in Asia snack, which splash on the plate. It's fun, I shoot differently, the pictures shot with Continous AF (extended range) have a high hit rate of> 80%. While photographing, the viewfinder always remains on, there is no timeout while taking the picture (only a green frame flickers briefly). A good feature is the automatic Eye Focus (only for humans), which can be assigned to one of the customized buttons. The camera is therefore also a fantastic portrait camera. I was a bit worried about the a9's performance for landscape photography, especially due to the lower resolution compared to the a7r and the resulting loss of the ability to crop. And yes, I miss it, but in return the hard drive is not cluttered with huge files. The a9 has a better dynamic range and better low light abilities than the a7r. A photo with iso6400 has no visible noise. Crazy. Another great development is the electronic shutter, which functions completely silent. That was one of the reasons that I got the a9 - finally, I can take pictures unobtrusively during presentations, without bothering others.What bothers me with the camera? The menu is better than the a7r's, but still confusing (a freely programmable slot is now helpful to bring together the most important functions). I'm hugely annoyed that the a9 PlayMemory apps do not run on the camera (I am not talking about the app for the ipad but the apps on the camera!) and I miss useful programs such as Lightshaft or Smooth Reflections which I both really liked. The omission was probably done to underline the �pro claim for the a9, but for me it means that I miss out on fun and useful functions. Bah! Furthermore, it is annoying that while transferring the burst data from memory to the memory card the whole camera is locked. The transfer can take quite some time with some dozens of pictures, especially with Jpeg (with raw it goes faster - that is probably owed to the software routines of the software, while raw is forwarded without processing), and it sucks that not even the menu is accessible. Also, the built quality is not perfect � it feels of high quality, but in terms of all weather sealing, etc. is not comparable to the pro bodies of the competition (e.g. the covers of memory cards and ports are not weather sealed).In conclusion: The a9 is a speed monster, and photographers who want this will appreciate the a9's main feature. The AF is the best I ever used during 25 years of taking photos with many brands. The resolution of 24.2MP seems adequate for sports photography (it should also be noted here that the competition in sports cameras has less powerful sensors). However, if you want to crop a lot and are hunting for the last pixel detail, the a9 will probably not be your ultimate dream. I personally am very satisfied with the landscapes abilities of the a9. With it, I have a great, modern and quite expensive high-end camera in my hands � but regarding the price, it also needs to be said that the price is equal or even a bit lower than the competition (we are talking about the D5 and 1DXii). Anyhow, with a price above 4k this camera ranges in the pro league, and I sincerely hope this is also reflected in Sony's customer service � let's se. As summary for the body, I'll rate it four stars at this stage.