IR index on technika

[kub]

Hello,

Has anyone experimented with finding the IR focus index on technikas?
Or any tips on focus bracketing? I have done quite a bit of work with 35mm and MF but not sure what kind of scale to look for, say for 90, 150 and 210mm lenses. I'll have to tape something next to the track and mark it as I don't have the standard scales...

thanks

[Bob Salomon]

I think Marflex has 252 652-4401

[ic-racer]

Focus scales from Technica's poorer asian brother.

So, if the scale is fixed to the camera, you would need a separate red mark on the moving standard for each lens focal length. You could find the red mark's displacement from the "visible light" focus mark using math.

[kub]

thank you