Bests & Worsts Reviews from Amazon

First Impression: 1. Low light performance is very good (I compare it with my Nikon D800 Video performance). 2. Auto White balance is giving me a very nice skin tone under low light 2700K 3. 4K + MP4 dual recording mode is very handy, like having RAW+JPG in my D800. 4. BOSS Image stabilization is amazing, beyond standard optical image stabilization. 5. Audio quality (built-in mic) is superb. 6. Digital zoom is very long range and usable. Especially with BOSS image stabilizer. 7. WIFI remote control with android is very good (fast image update), disadvantage is, the HDMI output cannot be use in this mode. The not so good: 1. LANC is no longer supported (Multi connector does not support A/V accessories). Didn't try yet, but it is said so in the manual 2. Touch screen LCD is not sensitve, difficult to access the menu. Hope to be like Iphone or Galaxy S5. But not quite. 3. As mentioned above, on remote WIFI operation, no output from HDMI. Meaning cannot use Smartphone remote control for LIVE HDMI output application (which I use a lot) 4. The EVF is a nice addition, but too tiny for my eyes. Probably because I get used to my D800 viewfinder.... Will update later when I get chance to use it! In summary, very happy with this purchase, and highly recommend it... Update #1: After using it indoor and outdoor, this is my impression: 1. 4K is really amazing. I can see the different between Full HD highest, and 4K 100Mbps. It is crystal clear, crisp and noticably better in video performance. I think I will never use the dual rec mode, as the MP4 is near to useless. The only downside is, rendering 4K (with Premiere CC 2014) is taking so long (with my core I7 Haswell, 512GB SSD, 16MB ram). 2. The Sony Zeiss optic is really good. The combination of 1/2.3 inc CMOS, 4K 100 MBps and the good optics is really delivers.... 3. The built-in Microphone is respectable and useful. It has good frequency response, good clarity and sensitive enough to be usable in normal environment. 4. For $1K 4K, it is absolutely worth it. Having shoot Video with DSLR (Nikon D800 with good glass), I think I will only use the Nikon on long static performance using Tripod (like Piano recital, etc). For active movement, I will use this Video, especially in a well lit environment. The low light is good, but for serious recording, the noise is still noticable, and using Neat Video in Premiere CC take forever (long rendering time). 5. The downside. The remote Android app is not usable. After taking 3 minutes clip, the video in Smartphone getting out of sync (lag) and becoming erratic, and end up crashing. For short shot it is ok, but really it is no practical use for me. Happy Easter! Update#2: I think this need SONY attention, to be updated in new Firmware: As I use (almost always) the 4K 100Mbps format, it consume SD space so fast. I use new Transcend 128GB UHS-1 (which can record without any problem) BUT, when it saving approx. 50GB (out of 128GB capacity), there is message pop-up saying no more space for XAVC-S. I cannot record 4K 100Mbps anymore, but when I switch to other format, it still keep going. So I suspect that, there is 'bug' in VTOC that assumes max SD capacity is 64GB (as said in the manual, the max SD capacity is 64GB). I am about to buy the 256GB card, so SONY.... please fix this with firmware upgrade!!! And there is already 512 GB SDXC card available, do not restrict the max size.... Update#3: 2 months later: * I still like this camcoder. In fact, I like it more and more as I get use to it. * After so many recording cycle (Record and Re-format), I can use the whole 128GB Transcend without any problem (I am now only use 4K 100Mbps exclusively) * Try the 64GB KomputerBay, amazingly it works for 4K 100Mbps without problem. BUT the 128 GB KomputerBay, does NOT work. It simply refused to Initialized the SD Card (for 4K). * I take a lot of low-light video with amazing result. As long as it is in the wide angle side, and not to dark (extremely dark is not recomended), My definition of low light is recording inside Church with standard lighting. On the telephoto side, it is still acceptable. * White Balance is AMAZING. I like it even better than my Nikon D800 (auto white balance). Skin tone is almost perfect. Happy shooting!