If you still need an example that with a budget of estimated 9.5 million dollars even with a "normal" full format mirror-less cinema picture on a professional level can be produced, the current Hollywood production "The Possession of Hannah Grace" (Sony Pictures Entertainment) confirms this.
Here is the trailer:
The horror thriller "The Possession of Hannah Grace" was shot entirely on Sony A7SII. For this Executive Producer Glenn S. Gainor used Hawk 65 anamorphic lenses which produce a 2.40:1 image with a 1.3 factor on the 16:9 sensor of the Sony Alphas final.
And here the making-of:
We find it especially interesting how the 8 bit signal of the Sony Alphas was handled. As is well known, the Sony Alpha 7SII neither records internally nor externally in 10 bits. The best quality is obtained at the HDMI out with 8 bits 4:2:2 and a higher quality codec in combination with an external monitor recorder.
Looking at stills from making-of, it seems that Atomos Shogun Flames for the external 4.2:2 recording was used for the most part. However, the Sony Rig doesn&t seem to be much more compact than with "normal" cine cameras and also in the critics& eyes, the unconventional film-technique didn&t seem to get a bonus.
Maybe from a technical point of view a cinema recommendation anyway ...