That's very interesting. Just picked up an OM-4 the other week as my first film camera, I knew it was one of the first to have multi-spot metering but just assumed it was standard TTL technology.
Not sure if I'm mis-reading this a surprised reaction, but if so, using light reflected from the film inside the camera body _is_ the standard TTL technology.
Interesting. The parent thread in the linked forum said that other bodies used a different method, so I assumed that was the standard.
> Yep, it applies to almost every AE SLR ever made. Notable exceptions were cameras like the OM-4 that metered off the film during exposure, or others that meter off the closed shutter curtain before exposure. But the vast majority meter from the focus screen so are susceptible to light entering through the eyepiece.
https://mir.com.my/rb/photography/hardwares/classics/nikonfe....