I was reading the forum for quite a long time, although only now signed up. Here comes one long post. I am sharing my experience with jumping the trains of brands.
Now to the point:
I am completely blasted out by people who stand by canon and are ready to turn away from their families if they will go other way. Same goes to people who talk more about their beautiful transition from their dslr to mirrorless and their continuous talk about all that deeptsh*t on either mpx, or fps, or crop factor, or log vs raw or any damn thing. Heats me up sometimes to quit the conversation. More you think and more you talk about, more shots you miss and less you actually know and can do on the field, studio or anywhere it happens you like to use your dslr for whatever reason bumped in your head.
I have a very wide spectrum of jobs to do. It is from sports to portraits, to wildlife, to landscapes and video. Sometimes it is my choice, sometimes it is my job. Someone pushed my brain out of my skull and I rented out a7s and a7ii to see what will happen as I'm shooting video with atomos ninja2 mixed with portraits and whatever comes my way. Well, prices for adaptors alone just made me think twice on this shady deal... But I thought I have 2 weeks, 2 cameras and one adaptor, so let me dig it in, in the end of the day strongest love in your life happens to be with the individual you hate the most, perhaps...
At the time I had 5d3 and 7d2 for all my work and they worked pretty good but I had my own issues with 5d3 being slow pedestrian as I stepped in some senses down, in others up, but from 1d4 a while ago. Mushy video that feels more like upscaled 720P was doing my head in, plus shooting some gigs I grasped in-between dilemma: 7d2 couldn't make it any good past 10000 iso and I needed it, but 5d3 was slow as heck in every direction. In the end 7d2 and heavy edit made it happen and everyone was happy, but 5d3 was under consideration.
So these two sony full frame mirrorless are pretty good I must say. Menues and general usage, feel of the camera etc is very hard to deal after you've spent most of your time with actual dslr and their logic. Jumping to nikon was way much easier for me, but that's a different story. Talking about DR it is a tat better sometimes somwhere in the testing environment. OOOOOH how people with grey cards in their little room get my head in... Not shooting anything but their keyboard with perfect exposure and WB... Basically it is a difference most noticeable in this kind of environment.
For video a7s shines but in terms of detail and iso performance it is better at a cost of constantly changing batteries. Pretty impractical unless you are always near the plug. For pictures 12mpx is not enough at all, how damn clean this picture would be, it is just does not retain enough information. Feels like we are backed up quite a good few years. A7ii is good but quite similar to 5d3 in loads of aspects, it's just hard for me to throw out of the window superior focusing system, extremely good and native and logical interface, very good feel in my hand and collection of native lenses just for few mpx more and possibilities that I do not need and can't use. I did eventually but my decision was a bit different.
Basically I didn't even bother taking them out on the gig I was shooting. Just... No. Filming some music was good and fun but I didn't have loads of batteries so most of the job my 7d2 and 5d3 did. Looking at sony lenses choices I feel like giving up on photography, maybe even life. I am not a sony hater by any means, but what there is on the market is extremely overrated towards the working environment. The logarithmic focusing wheel is a... Just made me swear while I tried to pull focus while shooting video. You are always hoping and jigging the wheel to get to the point and speed varies from time to time...!!! They are definitely on the right path and they are making bigger steps so far to make someone who has enough money invested into canon system to think on switching but in reality it is a bloody time to fix up this damn 5d3! Well...
I got really lucky with the price I sold my 5d3 and at the same time I found preowned 1dx in a very good condition. I ended up investing about 20% on top of what I got from my sale and I am glad I did what I did. Dirty bi*ch HDMI is not clean and it is a bit of a... But what I noticed is that 1dx is actually doing very good job on getting sharp enough and flat enough alli video to dig it in compared to what 5d3 did with apple pro res 4:2:2 and ninja. Anyway there was only 8 bit out with 5d3 if I am correct... It looked almost the same at least, just colour correction is slightly more aggressive able. So on video side 1dx actually does not disappoint me at all and gives much better low light performance compared to 5d3. It is not 1dc, but oh well oh well... Different story all the way in.
AF is spot on, there is nothing to say here really. I was impressed how good it performed in low light with AF. Where 7d2 would focus hunt a little bit, this one would bite the sh*t out and get the job done before I even realise that. 18mpx is not 22, but with a good glass it all works more than fine for what I do. Now there is 5ds out and it should be good, but if you need good high iso in real life working situation it was hard for me to find another match...
Well I steamed that off and hopefully someone could benefit or even disprove what I just said.
And thanks for the whole forum full of nice stuff that helped me out over the years I was shooting. Here was my first ever post.