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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 am Selling a Housing from the Company Easydive (Leo 3 WI). The Housing fits a lot of different cameras, only a different tray for the camera is needed. So it is future proof if you consider upgrading later on. The housing is at the moment configured for a Sony A7 R III AND Sony A7 III. I used the housing with a sigma 15mm on metabones adapter. The housing is working totally fine and was not used very much. I’d like to sell it, because for my type of photography and using it doesn’t fit to my camera handling. I bought the housing in the beginning of 2021! For other configurations, another extension ring might be necessary https://www.easydive.it/en/underwater-housing/mirrorless/leo3-wi.224.html The standard Buttons are: on the front: Autofocus and shutter on the back: Movie Record Aperture up and down Shutter Speed up and down ISO up and down switch button (to get access to an additional button layout) off Button The depth rating of that setup ist 150 (!) meters. The set includes: Housing (Price New: 2590€) (including 1 battery and a charger and 1x Nikonos 5 connector) additional manual Optical Trigger (159€) 2x Ballheads attached to the housing (52€) Display protection Foil(10€) Tray / Handle with another ball head (63€) spare battery (58€) Bajonett Protection Plug (18€) Developer Kit (87€) (for updating housing for other cameras) Firmware Upgrade (for an addional camera. Original set for A7R III, A7III was added as an addition) (150€) Housing Price new complete: 3.186€ Offered price: 2.350€ Dome port bundle additional (will sell separately if housing is sold): Dome port 160mm acrylic (499€) Extension ring 15mm (140€) Port Protection Cap (18€) Price new: 657€ Price now: 500€ Price complete bundle: 2.750€ also included but done as DIY: Monitor hood small (original one would be ~ 57€) Monitor large (~45°) (not available commercially) (not in the picture) Hood for Dome port (not in the picture) The article is located near Hamburg (Germany). Pickup and Paying Cash is possible. Shipping is possible. Paypal via bank transfer or paypayl is possible. send me a PM or an email: julian.muehlenhaus@googlemail.com

I am selling my Nauticam NA-A7RIII housing and accessories. It is practically brand new, I used it only a few times, MINT CONDITION and original packaging. It has a Nauticam Vacuum Valve installed and comes in a nice case. $3,000, retails for $3,240. I have a port adapter and several focus gears available as well that I am willing to sell individually or as a package deal. Each item is either brand new or used it only a few times, MINT CONDITION and has original packaging: Nauticam N100 to N120 35.5mm Port Adaptor II (for NA-A7IV) $475, retails $525 ** NEVER USED ** Nauticam C100IS-F Focus Gear for Canon EF 100mm f2.8L Macro IS USM $189, retails $210 Nauticam SC15-F Focus Gear for Sigma 15mm F2.8 EX DG Diagonal Fisheye $198, retails $220 Nauticam C1635II-F Focus Gear for Canon EF 16-35mm f/2.8L II USM (for use with 21270) $265, retails $295 Entire package $4,000. Individual priced items listed listed above. Please let me know if you have any questions. Buyer pays all fees and shipping

It's a long shot, but I'm interested in picking up a housing for my Sony A7R III. I'd prefer Ikelite due to budget restrictions but I'm open to other options. If you have something, please PM me. Thanks!