I use Marelux R5 and RF100, and as far as I know, the macro lens length of Marelux and Nauticum macro dome is different. Therefore, will the image quality be affected when marelux macro dome port combined with MFO-3 wet lens? （I have no experience using wet lenses）

As long as you are using the recommended Marelux macro port the MFO-3 wet lens should work the same. I have used wet closeup lenses from several manufactures on both Marelux and Nauticam with like results.

On 8/22/2025 at 11:06 PM, yiheng said:

I use Marelux R5 and RF100, and as far as I know, the macro lens length of Marelux and Nauticum macro dome is different. Therefore, will the image quality be affected when marelux macro dome port combined with MFO-3 wet lens? （I have no experience using wet lenses）

Note that the MFO3 is used with flat ports not dome ports

12 hours ago, Phil Rudin said:

只要使用推荐的 Marelux 微距镜罩，MFO-3 湿镜应该也能达到同样的效果。我在 Marelux 和 Nauticam 上都用过几个品牌的湿近摄镜，效果都差不多。

Thank you for your reply. I can use it with confidence

On 2025/8/23 at PM11点54分, Phil Rudin said:

只要使用推荐的 Marelux 微距镜罩，MFO-3 湿镜应该也能达到同样的效果。我在 Marelux 和 Nauticam 上都用过几个品牌的湿近摄镜，效果都差不多。

Ask you additional questions:

If I plan to use the nauticam EMWL system or MWL system in the future, can purchasing the "marelux extension Nauticam to Marelux" and combining it with the nauticam recommended lens port give me the best distance?

(For example, using "marelux Extension Ring 20"+"nautical macro port"+EMWL/MWL instead of "marelux macro port"+EMWL/MWL)

Or is there a way for me to achieve the exact same distance as Nautiam on Marelux?

Thank you very much

The Nauticam port chart recommends the 105 flat macro port for the Sony FE 90mm lens. This port works with all accessories including the EMWL #3 and bayonet mount. With Marelux the Sony 90mm uses the flat macro port 97 which has the same 67mm threads which will allow the bayonet mount and the EMWL #3 to be used. I don't see any reason why the EMWL should not work the same on Marelux as it would on Nauticam. Adapting a Nauticam port to Marelux is not going to be the same. I use the Nauticam SMC-1 on the Marelux 90 macro ports and the results are the same with Sony or Tamron 90mm macro lenses.

Edited August 30Aug 30 by Phil Rudin

15 hours ago, Phil Rudin said:

Nauticam 镜头接口表推荐索尼 FE 90mm 镜头使用 105 扁平微距镜头接口。该接口兼容所有配件，包括 EMWL #3 和卡口座。Marelux 镜头使用索尼 90mm 镜头的 97 扁平微距镜头接口，该接口具有相同的 67mm 螺纹，因此可以使用卡口座和 EMWL #3。我认为 EMWL 在 Marelux 上的工作方式与在 Nauticam 上完全一致。将 Nauticam 镜头接口适配到 Marelux 上效果肯定不一样。我在 Marelux 90mm 微距镜头接口上使用了 Nauticam SMC-1，使用索尼或腾龙 90mm 微距镜头时，效果相同。

OK, thank your suggestion😄