On 11/3/2025 at 10:52 PM, Pietro said:

Autofocus feels a bit faster, and I found it slightly easier to focus with diopters and on distant subjects.

Also, when using diopters, I didn’t notice any significant differences as magnification and working distance are almost the same.

Would you Upgrade from Sony 90 to 100mm because of the better AF and Bokeh?

I would be also interested what

@Alex_Mustard thinks?

On 11/5/2025 at 11:14 PM, Gudge said:

I designed and 3D printed a spacer for my Sony 90 macro and it works well, there a quite a few people who are happily using it now. Here's the STL for it below. I haven't got access to the Sony 100 macro but if someone can give me the following dimensions for the Sony 100 I can produce a design and upload the STL for it to Waterpixels for anyone who wants to download and print it:

• Diameter of focus ring

• Width of gap

• Diameter at bottom of gap

Sony 90 Spacer.stl

Thank you so much for the file! I printed it out right away!

On 11/7/2025 at 5:28 AM, Nate Hsu said:

Yes, that's correct!

For the 100mm lens alone:

• Nauticam N100 to N120 35.5mm Port Adaptor + Nauticam N120 Macro Port 87

For the 100mm lens + TC2.0:

• Nauticam N100 to N120 35.5mm Port Adaptor + Nauticam N120 Extension Ring 25 + Nauticam N120 Macro Port 87

Did you test the configuration underwater? 35.5 + 87 (without TC)?

How does it fit?

On 11/4/2025 at 10:00 AM, Architeuthis said:

Thank you for this valuable info (better nor keep the old 105 macroport)...👍

Did you test already the 1.4x TC?

(The current portchard says that the 125 macroport needs an additional N100 30II extension to accommodate lens&TC. It is not stated that the old N100 30mm extension, that is delivered along with WACP-C and many have already, will work also (some incompatibility?))

I asked at Nauticam USA whether the "old" N100 30mm extension, supplied e.g. along with the WACP-C (#37401), would also work together with the N100 macroport 125 to house the Sony 100mm macro & TCs (as stated above, the portchard mentions only the type II extension (#37430))...

The answer was positive:

"Thank you for reaching out. And you are right, the first generation N100 ER 30 works for the same purpose."

I've shot over 3000 underwater images with the Sony 100mm now.

It is definitely the best macro lens that I have tried on my Sony. And arguably the best macro lens on the market.

That said it is small gains over other options, rather than this being a whole new world. AF better, especially tracking and difficult subjects. Sharpness excellent, but not that different. Bokeh more attractive. The 1:1.4 range makes it very versatile - you can definitely do so much with the lens and MFO-1. Works very well with MFO-3, SMC-3 and EMWL-160 (although I find I get a bit more camera shake than with 90mm - despite stabiliser - need to check settings). The most impressive thing to be me is the performance with teleconverter. AF is amazing with TC.

Edited Wednesday at 05:53 AM1 day by Alex_Mustard

On 11/9/2025 at 3:13 PM, Michi said:

Would you Upgrade from Sony 90 to 100mm because of the better AF and Bokeh?

I would be also interested what

@Alex_Mustard thinks?

Yes I will upgrade because af and versatility without diopters, overall is better than 90 ;)

14 hours ago, Alex_Mustard said:

I've shot over 3000 underwater images with the Sony 100mm now.

It is definitely the best macro lens that I have tried on my Sony. And arguably the best macro lens on the market.

That said it is small gains over other options, rather than this being a whole new world. AF better, especially tracking and difficult subjects. Sharpness excellent, but not that different. Bokeh more attractive. The 1:1.4 range makes it very versatile - you can definitely do so much with the lens and MFO-1. Works very well with MFO-3, SMC-3 and EMWL-160 (although I find I get a bit more camera shake than with 90mm - despite stabiliser - need to check settings). The most impressive thing to be me is the performance with teleconverter. AF is amazing with TC.

Thank you for this helpful Feedback! I will order one!

8 hours ago, Pietro said:

Yes I will upgrade because af and versatility without diopters, overall is better than 90 ;)

Thanks for your advice!