Schneider-Kreuznach Center Filter IIIf

[islomane]

I've just found a Schneider-Kreuznach Center Filter IIIf. Can anyone tell me for which lens(es) it's intended?

[Dan Fromm]

IIIf? Are you sure? I found IIf for 35/5.6 Apo-Digitar XL and III, IIIa, IIIb, IIIc and IIId. No IIIf.

[islomane]

My eyesight is getting worse. As you suggest, it's a IIf, not a IIIf. Thanks for setting me straight.