Inon 45° Viewfinder for Nauticam Underwater Housings

Inon 45° Viewfinder for Nauticam Underwater Housings

JAN code : 4562121439887

The Inon 45-degree viewfinder is a perfect solution for critical focus and tired eyes.

Newly designed straight type viewfinder based on full frame DSLR. High performance large prism. Magnification of this viewfinder is same as camera’s viewfinder.
Viewfinder body is made from corrosion resistant aluminum and FRP. Same mount system as existing Nauticam viewfinders.

The 45° Viewfinder is an interchangeable finder unit to extend the eye-point of the camera's viewfinder without changing the image size (x1.0) to see all finder image areas even through a mask without vignetting. The eyepiece is at a 45-degree angle to the camera's optical axis which helps to shoot lower subjects like a goby on the seabed. Also, the eyepiece is rotatable 360 degrees making it easy to shoot vertical composition from a low angle.

Compact and lightweight straight type viewfinder designed for full frame DSLR. Using a large prism having less light attenuation enables to see clearer and brighter viewfinder image even corners and to provide less visual variation with different eye positions. INON viewfinder provides unparalleled bright finder image to support fine focusing comfortably even dark underwater.

Specifications:

• Length/width/height:    91.5 x 57.5 x 81.0 mm/3.6 x 2.3 x 3.2 in.
• Weight [air]:    332 g/10.7oz
• Material/finishing:    Corrosion-resisting aluminum alloy/black rigid alumite, ABS etc.
• Lens material/finishing:    Optical glass/antireflection coating
• Lens construction    5 elements in 3 groups (plus high refractive total reflection prism x 1)
• Magnification:    1.0x
• Depth rating:    100 m/328ft

In the box:

• Inon 45° Viewfinder
• Lock Ring for Viewfinder Unit
• O-ring
• Eyepiece and Lens Cap

Compatible Nauticam housings - updated Dec 2025

[DSLR]

NA Housing（DSLR）
All models

[Mirrorless]

NA Housing [MIL]
Sony    α1II / α1 / A9III / A9 / A7RV / A7IV / A7SIII /
α2020 / A7RIV / A7RIII / A7II / A7
Nikon    Z9 / Z8 / Z7 / Z7Ⅴ / Z7II / Z50
Canon    R5C / R1 / R3 / R5II / R5 / R6III / R6II / R6 / R7 / EOS R
Fujifilm    XT5 / XT4 / XT3 / GFX100II / GFX100S / GFX100 / GFX50S
Panasonic    S1RII / S5II / S1R / S1H
Olympus    EM1X
 
Viewfinder Installation
Viewfinders are bundled with dedicated tool to remove preinstalled Nauticam viewfinder and install INON viewfinder for self installation. You can refer to instruction movie in addition to the user manual. If you do not have confident on self installation, please consult with your purchasing dealer for advice.

PLEASE NOTE: Installing INON viewfinder on other brand housing may void housing warranty. Please check warranty condition of your housing before purchase.