Robin.snapshots

I modelled up a zoom gear for the sony 28-60 in a nauticam n100 housing. I used it for several dives and it has worked without issues for me. Model consists of 2 parts: TPU ring which fits around the zoomring on the lens and the gear itself which I printed in PETG 28-60 zoomgear.stlTpu Spacer.stl

Yes, @Davide DB mentioned something like this: https://www.easydive.it/en/underwater-housing/dslr-mirrorless/leo3-wi-universal-underwater-housing.224.html Which can also hold different camera's, is considerably cheaper and has substantially more depth rating.

It sure looks like it

60mm to 70mm float arm adapter for Nauticam accessory: . I recently got a mount for a nauticam bayonet on a 70mm float arm. I didn't want to upgrade my float arms to the nauticam ones so I made a simple adapter to mount it on a generic 60mm float arm. Printed in TPU, printing with 5 perimeters worked well for me. Nauticam bayonet 70mm to 60mm float arm adapter.stl

Set consisting off: 2x Inon z330 2x Inon ballmount 1x Nauticam ballmount 2x optical cable Inon -> sea&sea connector 1x retra LSD optical snoot 1x funnel snoot and reducer 8x eneloop pro batteries 3x neoprene covers 1x spare battery cover and O rings Asking €1100,- Pickup or EU shipping from The Netherlands

Underwater housing set consisting of: -Seafrogs salted line gen 3 for a6xxx with standard port -Neoprene protective cover -Tray with handlebar and trigger WA: -6” domeport optical glass -6” frogports USA shallow domeport aluminium Macro: -Long macro port with 67mm thread (for Sony 90mm or 50mm) -Flat short port with 67mm thread Gears: -Samyang 8mm focus gear -Sony 16-50 zoom/focusgear -Sony 10-18 zoom gear Ports can be sold separately if desired Asking €700,- for the full set. Pickup / shipping to EU from the Netherlands

For sale: AOI UCL-03 Underwater Close-up Lens for Action Camera & Phone Condition: good as new, used a handful of times. Glass in good condition Asking price: €175,- Pickup from the Netherlands or shipping within EU at buyers expense/risk

The AOI mount also vignettes in 8:7 but considerably less than the Backscatter mount. cropped to 16:9 (or 9:16 for that matter) both mounting options work fine. So if filters are desired, I would definitely opt for the Backscatter mount.

A general rule of thumb underwater is to get as close as possible to the subject. Less water in-between means more contrast and overall better image quality. Getting closer will also mean more strobe light on the subject, but as you want to start with natural light, this is not a consideration yet. Fisheye lenses are quite common for underwater photography as they tend to give a wider field of view (getting you closer) and sharper corners in the smaller domes like the 6" seafrogs one. For reefscapes I would consider the Tokina 10-17mm fisheye lens first. This lens is not a native Sony lens so will need an adapter for a Canon or Nikon mount depending on the one you get. This is an excellent wide angle lens for underwater use and a versatile option because of the zoom range. For larger animals like sharks, getting close is not always an option. So a slightly tighter lens like the Samyang 12mm will get a bit more of them in the frame. There is also the Sony 11mm option mentioned before, I haven't tried that one but I guess that falls in the same category. Another lens to consider here is the Sigma 16mm f1.4 dg dn. This lens is not as wide as the other options but performs well underwater for natural light shooting and is an excellent lens for land photography. Being rectilinear lenses in a 6" dome, these options will all suffer from a lack of corner sharpness. This is not really a problem for things like sharks as the corners are usually blue in these situations. I personally preferred the Samyang for photographing people and things with straight lines like wrecks. Being rectilinear it doesn't have as much distortion a fisheye would have. Here's an example of a model shot in a pool with the samyang: null To illustrate what I mean for reefscapes. Here is a shallow reef shot with natural light on the Samyang: Notice the big drop in corner sharpness with this combination. A fisheye would handle this a lot better.

Hi Jallie, Feel free to send me a personal message. I am in The Netherlands and selling a full set of Salted line housing + ports and have some lenses available as well. As for lenses, what are you planning to photograph? I have used the Samyang 12mm AF and it works great in the 6" dome but I would not like that one to be my only wide angle lens.

Yes in 16:9 or 9:16 there is no noticeable vignetting with both mounting options on GoPro 12

When shooting RAW there is only wide mode (full sensor) available and as such I haven’t shot anything else than wide mode (photo and video) which was the recommended setting. Cropping will yield perfectly usable pictures but is an extra editing step and throws away resolution. This is fine for most users as they will probably use 16:9 or 9:16 which both work well. The lens is still a great product at a good price point and can be very small because of this limitation. The issue I have is with the lack of transparency and false advertising. The lens is sold with the claim of “Razor Sharp Focus From Corner To Corner" which is simply not true. The reason I started this thread is that I wanted to know wether there was a difference in mounting options. I had hoped the vignetting to go away with a better fitting mount.

The tokina 10-17 will work in your current Seafrogs dome if you have the 6” version. Another option I liked in that is the Samyang AF 12mm f2.0

Yes the vignetting is always there in 8:7 format. Backscatters response was to crop the image to 16:9 where it works just fine. I find it a bit misleading for a lens to be advertised as "sharp corner to corner" and then having to crop the corners off. In the meantime, I have tried a friends AOI mount which does sit closer to the port than the backscatter mount. The vignetting with the AOI is considerably less but still present.

After some searching online I found that photodiox has an E mount extension tube set that includes a 7mm. I expect the lens to work without vignetting on FF in the 55 port with that one. With a cmc-1/2 it will be underwater corrected and I expect cheaper in total than the other options.