Hi chaps,

It could well be the case that the fairly thin black tshirt I'm using isn't quite dark/opaque enough but have had a few problems viewing the ground glass on my Sinar F2. Actually, it's a fair bet the tshirt isn't opaque enough. I'll get a decent dark cloth on pay day. But as a bid to get an even brighter ground glass, what are the options? I understand a fresnel screen is something worth considering? Is this something that replaces the ground glass or something additional?

Cheers!

Welly