> Emmanuel, The GX Prism finder will fit the following TLR Models - > Rolleiflex T, E2, E3, F, GX, FX and Rolleicord Vb. The GX version of > the prism has a slightly enlarged view size to accomodate the LEDs > in the GX viewfinder. While the prism is the same for the GX, SL66 > and System 6000 cameras the mounting hardware is different and thus > each family has its own version which are not interchangeable. David > If the GX prism fits the F, then it will also fit the Wide and the > Tele. todd Thanks to David and Todd. So, in short, GX and FX prisms fit the 1957-type of interchangeable TLR viewfinder, while SL66, SLX and 600x series have the same glass but different hardware. THis isperfectly clear, I'll immediately pass the info to my friend. -- Emmanuel BIGLER <bigler@xxxxxxxx>