Hi guys.. after years of service I’ve sold all of my Nauticam plastic dome ports 3.5 and 4.33 and I’m looking to upgrade to a glass dome in the next future.. still had my old oly EM1MK2…

Someone with M4/3 camera have used the zen dp100 n85 with the Olympus fisheye? I know it’s better than the Nauticam 140mm for CFWA… but it’s still good also for classic wide angle photography?

I know it needed 30mm extension ring, but I’ve also the 20mm extension in my rig.. it’s possible to mount the 8mm also with 20mm extension for more CFWA use?

I’m also evaluating the idea of adapting a tokina 10-17… if someone has done it, where you have find the correct zoom ring for that??

Sorry for the many questions….

Thanks!!

I used the Zuiko 8mm fisheye some time ago with Zen DP170 and Nauticm 140 domes. I belive also DP100 will work very good, but never used it by myself. Zuiko 8mm is a great and very sharp lens, but I soon exchanged it with adapted Canon 8-15mm and Tokina 10-17mm&0,71x speedbooster that provide also excellent IQ on MFT and offer more flexibility because of zoom...

My wife is using Tokina 10-17mm&0,71x speedbooster with Zen DP100 (the bare N120 version without extension) plus 20mm N120 extension with Oly EM1II. Zoom gear is from Nauticam.

This setup is not cheap, but incredibly compact and flexible and offers great IQ.

The setup requires a Nauticam N85/N120 34,7mm adapter, that is now discontinued (also Canon and Tokina are now discontinued, but are likely available second hand). I guess there are other Nauticam N85/N120 adapters available that can be used, in case the original is not available second hand, better ask at Nuticam which one might work...

There is a long tread about adapted fisheyes on MFT (including Tokina) in the old forum:

https://waterpixels.net/wp-archive/topic/61629-canon-ef-lenses-on-mft-cameras/

Edited October 19Oct 19 by Architeuthis

4 hours ago, FabioGal73 said:

Hi guys.. after years of service I’ve sold all of my Nauticam plastic dome ports 3.5 and 4.33 and I’m looking to upgrade to a glass dome in the next future.. still had my old oly EM1MK2…

Someone with M4/3 camera have used the zen dp100 n85 with the Olympus fisheye? I know it’s better than the Nauticam 140mm for CFWA… but it’s still good also for classic wide angle photography?

I know it needed 30mm extension ring, but I’ve also the 20mm extension in my rig.. it’s possible to mount the 8mm also with 20mm extension for more CFWA use?

I’m also evaluating the idea of adapting a tokina 10-17… if someone has done it, where you have find the correct zoom ring for that??

Sorry for the many questions….

Thanks!!

I used the Zen100 with the Panasonic 8mm fisheye it worked pretty well. This gallery was shot with the 8mm Panasonic and Zen DP100 dome- apart from 3 or 4 images. :

https://aus-natural.com/Underwater/Rowley%20Shoals/index.html

the 34.7mm has the advantage of working with the zoom knob on the adapter, it works but is a little slower than the housing zoom control when lenses are mated with the speedbooster version. You could also 3D print a gear to use with the housing zoom control.

The 34.7 is unfortunately discontinued. If you can't find a second hand one you should be fine using a 55mm N85-N120, but I expect the zoom control won't be positioned properly for the Nauticam zoom gear, so likely will need a 3D printed gear,

I use a custom 3D printed gear with my OM-1 and Canon 8-15. It would be a relatively simple matter to convert it to use on the Tokina lens. That system is very flexible, the Canon 8-15 is equivalent to an 8mm fisheye plus a 14-28mm FF equivalent rectilinear at least in terms of reach, very flexible setup that focuses down to the dome glass. I will say the rig gets rather heavy with the adapted Canon 8-15 and 140mm dome which I have. I expect the Tokina/Zen dome would be a bit lighter.

Like Chris, I'm using I'm using the Panasonic version of the 8mm with the Zen100. Actually the Zen100 was Chris' and I bought it off him.

I've only used it for one dive trip so far but was very happy with it. It's a very compact combination too, good for travelling.

Hi guys!!! Thanks a lot for the advices and the beautiful photos… 👍

It’s very interesting the idea of having a fisheye zoom lens adapted to our system… maybe I can finally sell the Wwl-c that is a little narrow with 130* for my taste...😅

the canon way it’s really expensive and bulky, the tokina seems more reasonable in size/cost, but the discontinued adapter it’s a pain in the ass… it’s pretty rare and impossible to find in EU… I don’t know if I want to go in that route with the metabones the n85-n120 ecc ecc… in the past I own the tokina 10-17 with a canon 650d and I didn’t remember a lot of quality… maybe with a smaller sensor it’s better!

On the other side in the last 12 years I own both the m4/3 fisheyes… but always with plastic dome ports.. the quality of the Olympus lens it’s top notch!

After looking at your shots I can say that the small zen dp100 is very good also for casual wide angle… 👍👍

Thanks!!

I have used both the Panasonic and Oly 8mm lenses in the Zen 100 and Nauticam 140 domes. The 140 might allow you to open up slightly and maintain corners, but the 100mm is more true to the M43 size benefits and is fine.

6 hours ago, FabioGal73 said:

Hi guys!!! Thanks a lot for the advices and the beautiful photos… 👍

It’s very interesting the idea of having a fisheye zoom lens adapted to our system… maybe I can finally sell the Wwl-c that is a little narrow with 130* for my taste...😅

the canon way it’s really expensive and bulky, the tokina seems more reasonable in size/cost, but the discontinued adapter it’s a pain in the ass… it’s pretty rare and impossible to find in EU… I don’t know if I want to go in that route with the metabones the n85-n120 ecc ecc… in the past I own the tokina 10-17 with a canon 650d and I didn’t remember a lot of quality… maybe with a smaller sensor it’s better!

On the other side in the last 12 years I own both the m4/3 fisheyes… but always with plastic dome ports.. the quality of the Olympus lens it’s top notch!

After looking at your shots I can say that the small zen dp100 is very good also for casual wide angle… 👍👍

Thanks!!

Yes the adapter is a pain, the 55mm adapter will work, but it does involve loading the lens from the front and placing the port over it. Actually the easiest way to do it would with Isotta as they use a larger port and only need a standard extension with zoom gear. Doesn't help you with Nauticam of course. The thing to consider is that the N85 Zen100 works with the Olympus and Panasonic fisheyes, but you need to use the N120 version with the Tokina or Canon, which of course requires the adapter, but 34.7mm is too much extension. so there is no way to do both options with the same dome with Nauticam parts.

I seem to recall that Wolfgang ( @Architeuthis ) obtained a custom 30mm N85-N120 adapter at some point from a European supplier which might be an option for you?

8 hours ago, Chris Ross said:

Yes the adapter is a pain, the 55mm adapter will work, but it does involve loading the lens from the front and placing the port over it. Actually the easiest way to do it would with Isotta as they use a larger port and only need a standard extension with zoom gear. Doesn't help you with Nauticam of course. The thing to consider is that the N85 Zen100 works with the Olympus and Panasonic fisheyes, but you need to use the N120 version with the Tokina or Canon, which of course requires the adapter, but 34.7mm is too much extension. so there is no way to do both options with the same dome with Nauticam parts.

I seem to recall that Wolfgang ( @Architeuthis ) obtained a custom 30mm N85-N120 adapter at some point from a European supplier which might be an option for you?

This 30mm N85/N120 adapter was made by https://www.unterwasserkamera.at/shop/catalog/en/

(I have it still here and do not need it any more. In case someone is interested, I can send for little money...🙂

)

Edited October 20Oct 20 by Architeuthis

I am very fond of using a fisheye for CFWA, and especially a zoom fisheye, although it is a bit complicated on the micro four thirds system at present. Although I recently tried to go back to M43, I didn't particularly enjoy the experience after having used a Nikon for several years, and have gone back to Nikon. But, during my brief recent affair with the M43, I did find that using a Lumix 12-32 lens and a WWL-C worked well and was fairly compact, which to me, is the raison d'être for that system underwater.

Granted, it is not the same as a fisheye, but offers something close, is compact and offers zooming without the port adapter and zoom ring complications associated with using the Canon lens on M43.

Just a thought.....

11 hours ago, JohnD said:

Granted, it is not the same as a fisheye, but offers something close, is compact and offers zooming without the port adapter and zoom ring complications associated with using the Canon lens on M43.

Just a thought.....

This is true for Nauticam, but most of the issues to my mind stem from the N85 port which IMO is too small. It becomes a lot simpler on Isotta who use a 102 mm port and you only need a simple and cheap 40mm extension with zoom knob to use the Canon lens and they have a zoom gear you can use directly. Combine that with the 4.5" glass dome and you have a nice compact system.

11 hours ago, Chris Ross said:

This is true for Nauticam, but most of the issues to my mind stem from the N85 port which IMO is too small. It becomes a lot simpler on Isotta who use a 102 mm port and you only need a simple and cheap 40mm extension with zoom knob to use the Canon lens and they have a zoom gear you can use directly. Combine that with the 4.5" glass dome and you have a nice compact system.

Good point. I have lived in the Nauticam ecosystem for so long, I sometimes forget about how things work with other options.

22 hours ago, JohnD said:

I am very fond of using a fisheye for CFWA, and especially a zoom fisheye, although it is a bit complicated on the micro four thirds system at present. Although I recently tried to go back to M43, I didn't particularly enjoy the experience after having used a Nikon for several years, and have gone back to Nikon. But, during my brief recent affair with the M43, I did find that using a Lumix 12-32 lens and a WWL-C worked well and was fairly compact, which to me, is the raison d'être for that system underwater.

Granted, it is not the same as a fisheye, but offers something close, is compact and offers zooming without the port adapter and zoom ring complications associated with using the Canon lens on M43.

Just a thought.....

Thanks..

I own the WWL-C with the Panasonic 12-32…. I use it for the first time last August in raja ampat and enjoyed the ability to zoom a lot… excellent with the sharks and other shy fishes… the quality is good but I’ve to admit that the fixed 8mm with also the plastic 4.33 dome port have an image quality a ton better.. I think it’s the Panasonic 12-32 that is a really cheap lens, maybe with another zoom lens would be better… 🤷🏻‍♂️🤷🏻‍♂️ I also found the 130 degrees a little limiting when I wanted to put the sun in the frame.. 😅

On 10/19/2026 at 3:36 AM, FabioGal73 said:

Hi guys.. after years of service I’ve sold all of my Nauticam plastic dome ports 3.5 and 4.33 and I’m looking to upgrade to a glass dome in the next future.. still had my old oly EM1MK2…

Someone with M4/3 camera have used the zen dp100 n85 with the Olympus fisheye? I know it’s better than the Nauticam 140mm for CFWA… but it’s still good also for classic wide angle photography?

I know it needed 30mm extension ring, but I’ve also the 20mm extension in my rig.. it’s possible to mount the 8mm also with 20mm extension for more CFWA use?

I’m also evaluating the idea of adapting a tokina 10-17… if someone has done it, where you have find the correct zoom ring for that??

Sorry for the many questions….

Thanks!!

The ZEN Underwater DP-100-N85 port was made for the Panasonic 8mm not the Olympus 8mm. It is I believe the only 100mm port for Nauticam made in N-85. The difference between the length of the two lenses is about 28.3mm. The closest extension is a 26mm for the 2X tele converter. The combo of the zen 100 and 26mm extension may work but it would need to be tested before making a purchase. I reviewed the ZEN 100 port in UWPMAG.COM back issues issue #79 using the Pany 8mm.

I also reviewed the Olympus 8mm fisheye in the Nauticam NA140 dome in issue #97. The 140mm with Oly/OM 8 requires a 17mm extension while the Pana 8mm is used without extension but vignettes a bit in the corners.

The photo is the Panasonic 8mm in an Ikelite housing system.

For me personally I'd just get a 140mm N12O Howshot dome and the N85-120 converter. Mainly because you can expand into other lenses or housing manufacturers down the road.

I believe there are adapters to use N120 ports on almost any housing.

2 hours ago, Phil Rudin said:

The ZEN Underwater DP-100-N85 port was made for the Panasonic 8mm not the Olympus 8mm. It is I believe the only 100mm port for Nauticam made in N-85. The difference between the length of the two lenses is about 28.3mm. The closest extension is a 26mm for the 2X tele converter. The combo of the zen 100 and 26mm extension may work but it would need to be tested before making a purchase. I reviewed the ZEN 100 port in UWPMAG.COM back issues issue #79 using the Pany 8mm.

I also reviewed the Olympus 8mm fisheye in the Nauticam NA140 dome in issue #97. The 140mm with Oly/OM 8 requires a 17mm extension while the Pana 8mm is used without extension but vignettes a bit in the corners.

The photo is the Panasonic 8mm in an Ikelite housing system.

Hi phil.. thanks for the advice… in the zen underwater n85 port chart they say that the oly 8mm behind the dp100 n85 is good with the Nauticam 30mm extension ring… 😅😅 ah.. I read your review!! 😉

2 hours ago, Grantmac said:

For me personally I'd just get a 140mm N12O Howshot dome and the N85-120 converter. Mainly because you can expand into other lenses or housing manufacturers down the road.

I believe there are adapters to use N120 ports on almost any housing.

Did you use the howshot dome port with the 8mm Olympus? 😅

It has been a while, but I have used the Oly 8mm with the DP100 and a 30mm ER. I believe it is listed on the Zen port chart. The Nauticam 140 dome gives better corner results. But I have not used either of those for quite a few years.

4 minutes ago, JohnD said:

It has been a while, but I have used the Oly 8mm with the DP100 and a 30mm ER. I believe it is listed on the Zen port chart. The Nauticam 140 dome gives better corner results. But I have not used either of those for quite a few years.

I confirm it’s in the zen port chart… I’m still undecided between the Nauticam 140 and the zen dp100… maybe can be possible and easier to find the 140mm also used… the zen only new from my dealer… fortunately and unfortunately I’ve a lot of months before coming back underwater … 😅

3 hours ago, Phil Rudin said:

The ZEN Underwater DP-100-N85 port was made for the Panasonic 8mm not the Olympus 8mm. It is I believe the only 100mm port for Nauticam made in N-85. The difference between the length of the two lenses is about 28.3mm. The closest extension is a 26mm for the 2X tele converter. The combo of the zen 100 and 26mm extension may work but it would need to be tested before making a purchase. I reviewed the ZEN 100 port in UWPMAG.COM back issues issue #79 using the Pany 8mm.

I also reviewed the Olympus 8mm fisheye in the Nauticam NA140 dome in issue #97. The 140mm with Oly/OM 8 requires a 17mm extension while the Pana 8mm is used without extension but vignettes a bit in the corners.

The photo is the Panasonic 8mm in an Ikelite housing system.

The Zen port chart includes the Olympus 8mm and they recommend the 30mm extension with the DP100. The port chart has disappeared from the Zen website in the past few days, but you can get it on the web archive here:

Zen N85 port chart

My Panasonic 8mm review using Zen 100 was published a year before the Olympus 8mm was even released.

I had moved on to the NA140 & Olympus 8mm for the 2017 review.

Edited October 23Oct 23 by Phil Rudin

20 hours ago, FabioGal73 said:

Did you use the howshot dome port with the 8mm Olympus? 😅

It uses the same extensions as the Nauticam

I went with the Zen 100, Nauticam 30mm extension and Olympus 8mm fisheye for my setup when I first purchased about 4 years ago. It is a little soft in the corners, but you seem to get that with most wide angle set-ups, apart from the really high end stuff. Overall I am really happy with it. I now use it with an OM1 mk2. Attached are a few shots from my Red Sea trip in June this year taken with the set-up. I have included some where you can see the softness in the corners, but there are no issues if the corners are blue water.

Edited October 26Oct 26 by Traystar

13 hours ago, Traystar said:

I went with the Zen 100, Nauticam 30mm extension and Olympus 8mm fisheye for my setup when I first purchased about 4 years ago. It is a little soft in the corners, but you seem to get that with most wide angle set-ups, apart from the really high end stuff. Overall I am really happy with it. I now use it with an OM1 mk2. Attached are a few shots from my Red Sea trip in June this year taken with the set-up. I have included some where you can see the softness in the corners, but there are no issues if the corners are blue water.

Thanks a lot !!!! This help me!!!

For the corners softness on those shots for me seems pretty good!! The 4.33 acrylic don’t have any better! 👍👍👍👍

4 hours ago, FabioGal73 said:

Thanks a lot !!!! This help me!!!

For the corners softness on those shots for me seems pretty good!! The 4.33 acrylic don’t have any better! 👍👍👍👍

You're welcome.