This is why Fujifilm is different (X100VI viewfinder)

DSLR viewfinder types compared: Porro-mirror vs Pentaprism. Porro and Pentaprism DSLR viewfinders differ in mirror movement, viewfinder position, and body design. The Olympus E‑300’s Porro system has a lateral mirror path, an offset viewfinder, and a flat top, while the Nikon D90’s Pentaprism uses a direct mirror lift, central eyepiece, and a characteristic prism hump. The Pentaprism viewfinder is brighter and larger, whereas the Porro viewfinder is dimmer and smaller. #porroprism #porromirror #

Viewfinder - Full Game Walkthrough (No Commentary) - 100% Achievements

Align Any Telescope Like a Pro – Fast, Simple Viewfinder Setup

Viewfinder ( Chapter 1 | Level 2.1 | Gameplay and Tutorial )

DSLR Viewfinder Types Compared: Porro vs Pentaprism

Using the DW-3 Viewfinder with Nikon F3 for POV Shots

Why You Should Use the Viewfinder Instead of the Screen