It will be interesting to see how this new 7Artisans compares to the Canon 8-15 + Metabones underwater. Certainly a significant price saving for those that do not already have the Canon. It should also yield a slightly smaller setup with a less extension needed. At $450 USD I am tempted to give it a try behind my 140 dome.

This, and other native Sony FE (zoom) fisheye lenses, look great, since they are smaller compared to the adapted Canon 8-15mm. The question to me is, however, whether they accept TCs and if yes, whether they provide acceptable IQ...

While it's tiny, it's a prime lens so you will not get the flexibility of a fisheye zoom and TC

Looks like the aperture will require a gear of some sort

36 minutes ago, Grantmac said:

Looks like the aperture will require a gear of some sort

It has an A setting on the aperture ring allowing it to be controlled from the camera.

I missed that, was listening to the review with half my brain.

A funny video and crazy use of video with an AF demonstration 😁

I have been testing the 7Artisans 10mm fisheye in the pool today between the rain and lightning storms we have been having for over two weeks in South Florida. All the rain water is clouding the pool and causing algae blooms..

The camera used is the 66mp Sony A7R VI, Marelux housing, Marelux 140mm dome port with the sun shade and 20mm port extension. Using the 20mm pushes the lenses closer the the port glass than I would like and with a 30mm extension the port shade vignettes noticeably. I am hoping Marelux will offer a 25mm extension which may work with the shade in place or at least greatly reduce vignetting. At some point I will try the 30mm extension with the shade removed. All images are full frame and shot at ISO-320, A-priority, at F/8, F/11 and F/16 for splits. When the lens is set on A for aperture control from the housing (without a gear) the lens reverts back to F/2.5 when shutdown and turned back on.

For a bit of size reference the pool light is 15cm (5.91 inches) across and the closes shot is with the port touching the pool light. Like with all fisheye lenses shooting a flat wall the center is sharp and the edges and corners are soft. The pool jet (round white plastic) is 5.5cm (2.17 inches) and the closest image is touching the jet with the dome glass. The pool thermometer is 1.5cm (0.59 inches) across where it says patten pending.

It is clear to me that as reported by YouTubers the lens is quite sharp and is clearly a great budget choice for an AF lens V the AF zooms.

Build quality also seems good and the lens is a bit on the heavy side.

Rumour also has it that Sony are going to be releasing a 10-? zoom fisheye sometime very soon.

Since (from what I understand) the projection on this is skewed closer to a rectilinear do you think it would benefit from a larger dome?

Added to that does anyone think it would de-fish with less correction than say the 8-15mm lenses while retaining corner sharpness?

Reviews above water are impressive.

Edited September 12Sep 12 by Grantmac

Based on my tests with the manual version, it needs a full hemisphere dome for proper alignment. You can order a custom one, but I don't know of any off the shelf full domes. The Sony fisheye seems a much better option.