i've always thought it was beattie

but i've been hearing about POC

which one is better? whata are the diferences?

I would say in a static adapter the beattie is best as the POC is too grainy, however, the bokeh from the beattie is not so good.

I think most have had best luck from the Nikon D screen or the Canon Ee-s Screen

By my observations Canon EE-A and EE-S microlens focusing screens are one of the best not to mention they are almost 3x cheaper than Beattie.

I have EE-A OEM screen sample and EE-S consumer version and I think that OEM version is not so good as the consumer one as that OEM EE-A screen loses more light than EE-S but according to Canon`s specification sheet it should be vice versa.

I`m 95% sure that Beattie isn`t better than modern microlens screens from Canon.

Regs,
T