First of all, let me say that I'm glad to find such a wealth of knowledge about 'all things film' on the APUG site. As a new member, I'll be stumbling around to find info concerning my new (old) purchase... a '45 Mini Speed Graphic (2 1/4 x 3 1/4) that must have been updated with a Graflok back. I've already purchased "23" 6x9 film backs that work nicely and still allow use of the ground glass, but here is the 'rub'... while the glass has been cleaned, it is still rather 'lifeless', so I'm thinking of upgrading to better glass. The question arises when I hear about fresnel & glass combinations being better, but since my old Graflex back only has space for one piece of frosted glass (2 1/4 x 3 1/4), I'm not sure if this type of upgrade is advisable or even possible. Any ideas about best (& BRIGHTER) glass replacement? Sorry if this has been covered in another thread...