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.
Optically designed to suit to an EVF: electrical viewfinder of a full size DSLR camera providing wider viewing angle having minimal vignetting or blurred part even at corners. The viewfinder provides same magnification as camera’s viewfinder (1.0x) and extends its eye-point at 60 mm/2.4 in. not to have vignetting even through a mask. High quality optical components are carefully housed in a small, light yet durable body which is made from corrosion resistant aluminum alloy and FRP: fiber reinforced plastic.
Finder images through different viewfinder products

Left: Finder Window (waterproof glass without optics. Not able to see corners of finder image through a mask)
Center: Pick-up Finder (camera’s finder image is demagnifed to extend eye-point to see all finder image)
Right: Straight/45º Viewfinder (extending eye-point without changing finder image size enables to see all finder image without vignetting through a mask)

Specifications
Length/width/height** | 101.8 x 72.2 x 74.0 mm/4.0 x 2.8 x 2.9 in. |
Weight [air]** | 305 g/10.8oz |
Material/finishing | Corrosion-resisting aluminum alloy/black rigid alumite, PC etc. |
Lens material/finishing | Optical glass/antireflection coating |
Lens construction | 5 elements in 3 groups, high refractive porro prism x 3 |
Magnification/eye-point(u/w) | 1.0x, approx. 60 mm/2.4 in.[u/w], approx. 45 mm/1.8 in.[air] |
Depth rating | 100 m/328ft |
* Subject to change without prior notice.
** Including the eyecup without the lens cap.