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Hi guys! I am totally new to this forum. I tried to find a thread treating my issue but haven't found one, so I decided to start a new topic. I have been using Oly MFT (since 2011 OM-D M5, since 2016 OM-D M1MII) for years and I was quite happy with it, especially with its packed-size and "travellability"! Nonetheless, I started to look around for another (better) solution and rented a Sony A7 IV for 1 week on a dive-trip in the mediterranean sea - the result KNOCKED ME OFF!!! I am sure all of you guys already using a FF mirrorless can only laugh of me :-) So, I took the decision to upgrade my gear to a fullframe, mirrorless cam and started searching different options. I am currently struggling between the 3 models: NIKON Z7 SONY A7R IV SONY A7R III I wonder if anyone of you could give me a clue why I should prefer the A7R III or Nikon to the A7 IV (except the additional price-step to take and the higher noise)...! :-) For those of you who'd like to read some pros and cons about the 3 candidates, just read on. For those of you who can give me a hint, feel free to scroll down and type your answer - THANKS!! I've read several forums and comparisons about advantages and disadvantages, some of which I'd like to share with you! Nikon Z7 I have had "hands-on" in a camera-shop. Good "look and feel"-feeling, but nothing really better than the SONY. + proven manufacturer + high-quality products + sensor quality + quick cardslots (XQD) + menu-structure a bit more well-thought than the Sony (not necessarily from my personal point of view, though) + quite a fair price - currently only a few lenses available (except F-mounts with adapter) - generally one or two steps behind in developing mirrorless cams - "only" 1 cardslot (although I cannot imagine this really being an issue in everyday use...) Sony A7R IV I was able to do a 1-week-live-testing with a rented equip. and I was absolutely convinced of this baby! :-) + successfully selling and developing mirrorless fullframes since 2013 + incredibly high pxl: 61MP + rocket-fast autofocus (provided using a GM-lens) + picture quality + highest resolution of viewfinder (5.6 MP vs 3.6 MP on the Z7 and A7R III) + very wide variety / choice of lenses (all possible lengths, types and price-segments) - due to the very high density of pxls on the sensor (50% more pxls on the same area 36x24mms), slightly more noise - ... and maybe some erratic colors (I haven't been able to confirm this issue => anyone an idea?) - the cardslots are not working very quickly, despite the fact that both slots are UHS-II SDXC - Sony is not very known (as far as I know) as a manufacturer in the PHOTO-segment (more in the movie industry) Sony A7R III I have not yet been able to see it live, but I was told that for my purposes, it would serve almost as well as the A7R IV with some compromises. However, its price is remarkably lower... Compared to the A7R IV: + remarkably less pricey + noise and color accuracy are told to be a bit better => can anyone confirm this?? - less resolution (42MP vs 61MP) - viewfinder less resolution (3.8 MP vs 5.6 MP) - slower autofocus Thanks for reading, folks!!

I'm interested to find out the Wetpixel community's views on current (and older) full frame cameras for underwater use. If you had the choice of any one full frame still camera on the market and expense, current lens ownership, housing choice etc. were no object, which would you chose and why? When responding, please ignore space/size/weight as a selection criteria as all full frame system housings and ports all seem ultimately pretty much the same in terms of weight and bulk. The weight of the camera itself seems to be largely irrelevant! My purpose on this is just to get an idea of what people are thinking. It has no purpose beyond this and I must confess that I am personally very happy with my current choices. Several recent discussions have raised some interesting ideas however, and I think it is a topic that would be useful to explore? Thanking you all in anticipation.