Viewfinder for Apo-Telyt M 135/3.4

[miboss]

I just bought (second hand mint) a Apo-Telyt M 135/3.4 to complete my range of lenses in the sense that, when travelling, I can forget about bringing along my bulky DMR yet stay ready for those shots where a tele (180 on the M8) is needed. I feel pretty sure that I can manage focusing with the 1.25 viewfinder magnifiyer but I am less comfortable with the lack of framelines in the M8 VF. I have read that the field of view is approx. twice the focusing patch yet I would certainly prefer a separate VF (180 in this case). Does anybody know about the existence of such a device ?
Thanks in advance for your help

Michel

[robsteve]

Michel:

There was a 180mm finder for the Leica screw mounts.

[macusque]

TEWE make some zoom viewfinders that go to about 200mm.
I have one, though I don't use it anymore since I sold my 135 Apo.
And even then I preferred to use the internal viewfinder for framing (135 is about two times the rangefinder patch).

This is a link to a similar one selling on ebay right now.

[miboss]

Thanks Robert and Marco. I'll try to find the Leica VF and if not, the Tewe one.
You've been most helpful

Michel