We love the size and some of the features of the Sony FS5 video camera, but the video codec and bit-rate is completely inexcusable to us.
Then there was the issue of not being able to record internally and also use the SDI or HDMI output at the same time. The recently released firmware 1.10 has helped in this area in that you can now do both but you lose the video image on the built-in display. Better but still not ideal.
Some users are reporting issues with the LCD brightness inaccurately reflecting the true brightness of the scene. Other users are reporting blocking and noise, for example:
Sony has shown more willingness to release firmware so it wouldn’t surprise us if there are some more improvements coming. We will stick with the Sony FS7 which is much larger than the FS5 but it produces much better image quality and it has more features.