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Mid-range Focus Optmizer 3
Mid-range Focus Optmizer 3
Mid-range Focus Optmizer 3
Mid-range Focus Optmizer 3
Mid-range Focus Optmizer 3
Mid-range Focus Optmizer 3
Mid-range Focus Optmizer 3
Mid-range Focus Optmizer 3
Mid-range Focus Optmizer 3

Nauticam Mid-range Focus Optmizer 3

The Nauticam MFO-3 compresses the full-frame macro lens to an equivalent 60mm, breaking through the focal length limitations of underwater photography. It enables wide-angle macro shooting without the need to change lenses, enhancing the focusing speed and depth of field performance.
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Description

Nauticam once again demonstrates its commitment to underwater photographers with the introduction of the Mid-range Focus Optimizer 3 (MFO-3). As full-frame mirrorless cameras become the go-to choice for serious underwater imaging, a key limitation has emerged: the lack of close-focusing, wide-angle macro lens options—especially for blackwater photography. The MFO-3 is designed to solve that problem without requiring new camera lenses or ports.

Optimized for use with longer focal length full-frame macro lenses (such as 90mm, 100mm, and 105mm), the MFO-3 transforms these lenses into an approximate 60mm equivalent.  It also delivers significantly enhanced "focus-to-the-glass" performance while still offering ample working distance when needed. Whether you're capturing thumbnail-sized nudibranchs or grapefruit-sized frogfish, this water-contact optic delivers outstanding image quality—without the need to swap out your camera lens or port.

While it's an outstanding tool for blackwater, the MFO-3 is just as capable in a wide range of macro environments. And despite its larger physical size, it actually boasts a lower in-water weight than the SMC-3, making it easier to handle and balance in the water.


Mid-range Focus Optimizer 3 (MFO-3) Specifications

 Dimensions OD 84mm x H 114.2mm
Weight in air 602g
Buoyancy in water Negative 120g
Max Magnification (*1) 0.9x
Lens FOV/Converted FOV 23° / 38°
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


Introducing Mid-range Focus Optimizer 3 (MFO-3)


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 with MFO-3 (more coming soon)

Lens

Sensor

format

Lens FOV.

Max.

Magnification

Working

distance

Converted FOV.

Canon RF 100mm f/2.8 L Macro IS USM 

FF

24°

0.9X

0-1490mm

40º

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

23º

Canon EF-S 60mm f2.8 Macro USM

APS-C

24.5°

 

 

TBD 

Panasonic Lumix S 100mm f2.8 Macro

FF

24°

 

 

 TBD

Included in the box

  • Front and rear rubber caps
  • Neoprene bag
  • M67 Spacer ring for SMC/CMC
  • Cleaning cloth