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Nauticam Mid-range Focus Optimizer 3 - MFO-3 - 81503

https://www.seatech.co.nz/web/image/product.template/29295/image_1920?unique=bcd7514

$ 1,182.99 1182.99 NZD $ 1,182.99

$ 1,028.69

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Manufacturer: Nauticam
Port Fitting: M67

Stock Code: NAU-81503

Introducing our newest Water Contact Optic, the Mid-range focus optimizer or MFO-3. The MFO-3 is designed to elevate your macro shooting experience by eliminating any noticeable focus hunting while ensuring crisper, sharper and more vibrant images.

Included in the box

  • Front and rear rubber caps
  • Neoprene bag
  • M67 Spacer ring
  • Cleaning cloth

Comparison with MFO-1 and SMC-3

81503 MFO-3 81501 MFO-1 81203 SMC-3
Dimensions (OD x H mm) Ø 84 x 114.2mm Ø 70 x 26mm Ø 70 x 32mm
Weight in air 602g 218g 307g
Buoyancy in water Negative 120g Negative 150g Negative 215g
Lens FOV / Converted FOV(*1) 23°/38°
Max. Magnification (*1) 0.9X 1.2X 2.3X
Working distance (*1) 0-1500mm 108-1005mm 46-98mm
Lens construction 4 elements in 3 groups 3 elements in 2 groups 3 elements in 2 groups
Lens coatings Anti-reflection Anti-reflection Anti-reflection
Mount thread M67 M67 M67
Depth rating 100m 100m 100m
*1. Tested with Nikon Nikkor Z MC 105mm f/2.8 VR S Macro lens

Compatible Lenses (More coming soon)

Lens Sensor format Lens FOV. Max. Magnification Working distance Converted FOV.
Canon RF 100mm f/2.8 L Macro IS USM (with Modified Aperture) FF 24° 0.9X 0-1490mm 40°
Canon EF 100mm f/2.8L Macro IS USM FF 24° 0.9X 0-1490mm 40º
Nikon NIKKOR Z MC 105mm f/2.8 VR S Macro FF 23° 0.9X 0-1500mm 38°
Nikon AF-S VR Micro-NIKKOR 105mm f/2.8G IF-ED FF 23° 0.8X 5-1490mm 38°
Nikon AF-S Micro NIKKOR 60mm f/2.8G ED DX 26.5° 0.5X 0-1500mm 45º
Sony FE 90mm f/2.8 Macro G OSS FF 27° 0.8X 0-1500mm 45º
Fujifilm GF 120mm f/4 Macro R LM OIS WR Medium Format 25.7° 0.9X 15-1500mm 43º
Olympus M. Zuiko Digital ED 60mm f2.8 Macro M43 20° 0.5X 0-1500mm 33º
OM System M.Zuiko Digital ED 90mm f/3.5 Macro IS PRO(Normal macro mode) M43 14° 0.7X 0-1480mm 23°
Canon EF-S 60mm f2.8 Macro USM APS-C 24.5°


Panasonic Lumix S 100mm f2.8 Macro FF 24°


To be tested later

  • Canon EF-S 60mm f2.8 Macro USM
  • Panasonic LEICA DG MACRO-ELMARIT 45mm F2.8 ASPH. EGA O.I.S.
  • Sigma 105mm F2.8 DG DN Macro Art (FE mount)
  • Panasonic Lumix S 100mm f2.8 Macro (L mount)
  • Sigma 105mm F2.8 DG DN Macro Art (L mount)


Dimensions OD 84mm × H 114.2 mm
Weight in air 602g
Buoyancy in water Negative 120g
Lens FOV / Converted FOV(*1) 23°/38°
Magnification (*1) 0.9x
Working distance (*1) 0-1500mm
Body construction Hard-anodized aluminum alloy
Lens construction 4 elements in 3 groups
Lens coatings Anti-reflection Coating
Mount thread diameter M67
Depth rating 100m
*1 Tested with Nikon Nikkor Z MC 105mm f/2.8 VR S Macro lens


  • 25101 M67 flip diopter holder for M67 macro ports (from SN A614741 onward)
  • 25108 M67 Double Flip Holder for M67 Macro Ports (from SN A397071 onward)
  • 83214 Bayonet Mount Adaptor for SMC/CMC
  • 83250 M67 to Bayonet Mount Converter II
  • 87501 Flip Holder for EMWL

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