Most useless photographic accessory

[GregY]

Those non-metered prisms they made for the Nikon F and F2.
It’s difficult to imagine abandoning the convenience of coupled TTL metering.

Not really....if you used Leica (M or LTM), Rollei, any large format cameras.......you're not afraid of using a hand held light meter. On top of that, the plain prism F & F2 just handle better.....

 

[benveniste]

Tripod adapter for my Pentax 110 SLR.

 

[Don_ih]

It’s difficult to imagine abandoning the convenience of coupled TTL metering.

I almost never meter anything, so it's pretty easy to imagine.