Linhof SuperScreen Curvature

[david4]

How critical is preservation of flatness of Linhof SuperScreen to

focussing? Should the screen be replaced if it has curled? What

precautions or preventive measures can be taken to delay or avoid

curling of the SuperScreen? Would wedges work? Has someone found an

alternative that does not have a tendency to curl but provides the

advantages of the SuperScreen? I thank you in advance for your answ

[bob_salomon3]

It curves due to heat and non support along the long edges.

Some users put a match stick under the long edges.

 

<p>

 

Why does it happen? It isn't glass

[john5]

I have used Bob's sugestion for about 3 months and it works perfectly.

You might have to use a very thin rubber band under the match sticks

so that they do not fall out.

John

[david4]

The answers were helpful. I lacked matches but found that Q-tips, with

the ends cut off, served nicely....

[h._mark_weidman]

I have recently spent an inordinate amount of time trying to determine why my

Schneider 58mm Super Angulon lens consistently focuses in front of the

subject matter. This includes having sent the lens back to Schneider in

Germany for testing. Turns out it was the slightly warped Linhof Superscreen.

This does not say much German design and manufacturing which requires one

to put a $80 accessory on a $4,000 camera in order to see the subject clearly.