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

Nauticam Mid-range Focus Optimizer 3 (MFO-3) Once again Nauticam shows how well it listens to the needs of underwater photographers. With the rising popularity of Full Frame Mirrorless Cameras for underwater imaging, the one disappointment has been the lack of good close focusing wider focal length macro lenses - particularly for blackwater shooting. The MFO-3 is designed to solve that problem and improve almost every aspect of this type of imaging with no need to buy another camera lens and port! Perfect for using long focal length full frame macro lenses (90mm, 100mm, 105mm, even 120mm)) while enabling enhanced focus to the glass performance and maintaining plenty of working room when needed. Not just for blackwater, you can go from a thumbnail size frogfish to grapefruit size frogfish without having to back too far away from your subject. Another game-changing water contact optic from Nauticam. In the chart below you will notice that although the MFO-3 has a larger form factor, it has a lower in-water weight than an SMC-3 for easy handling. 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 (with Modified Aperture) 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°       Panasonic Lumix S 100mm f2.8 Macro FF 24°