Concerning the size of Mamiya TLRs

[Jarvman]

Anybody know a good way of visualising a 6x4.5 crop in-camera? I'm finding it difficult using the whole 6x6 groundglass screen. I was thinking of buying a spare screen and putting lines on there with permenant marker.

 

[benjiboy]

If the model you have takes interchangeable screens , the No.6 checker screen is a big help.

 

[Michel Hardy-Vallée]

Anybody know a good way of visualising a 6x4.5 crop in-camera? I'm finding it difficult using the whole 6x6 groundglass screen. I was thinking of buying a spare screen and putting lines on there with permenant marker.

Just put a piece of thin cardboard or dark paper over your screen. It will stay in place easily because the focussing screen is sandwiched under a thin sheet of metal, which is raised slightly above the screen.