Film spacing question

[Gerry M]

I have a pre-war Super Ikonta 531A. It has 2 red windows near the bottom of the back. Current film has the frame numbers for 645 at the top of the backing paper, so they don't appear in the red windows. The bottom row of numbers (6X9?) that do show, the spacing doesn't coincide with the 645 frame numbers. How do you load and advance film w/o the correct frame #'s in the red window? To help illustrate this, I have attached a photo. Any help appreciated.

Thanks,

Gerry

 

[summicron1]

You use the 6 by 9 numbers, but you use them twice. Your first shot is with the "1" in the first window to which it comes, your second shot is with the "1" in the second window to which it comes.

Your third shot is with the "2" in the first window to which it comes. Your fourth shot is with the "2" in the second window to which it comes.

And so on.

 

[Gerry M]

That should give 15 frames, correct?

 

[mr rusty]

you learn something every day. I don't have a camera with 2 windows, but always wondered why some did...........