Roger Hicks
Veteran
I cannot say that I find the 2.8 (90 mm) framelines considerably more reliable than the 135 framelines on the M9. It may have to do with the adjustment of the goggles.But then I am not much of a frameline-accuracy person. Too much wedded to the rangefinder concept I guess🙁 And I strongly dislike the blocking off of the outer parts of the viewfinder by the 2.8, It gives, as I said before, a tunnel vision. Especially with longer lenses I like to see the surrounding area in order to aim the camera more easily. Silly cheap indeed. But I paid 100 Euro for an as-new Hektor. Which is about the same quality as the 2.8, albeit slower.
Personal taste, I guess. With the 1.5x magnification of the 0.68x finder, I find it close enough to 1:1 that I keep both eyes open. I take your point about frameline accuracy, but quite honestly I'd forgotten that the M9 had a 135mm finder, as I've no occasion to use it; I was thinking of the M8, where a 135 frame (90 magnified 1.5x) is more accurate than an unmagnified 90 finder and a lot more accurate than no finder at all.
In response to ederek, I think I paid 300€ for mine, mint with case, box, paperwork, etc., from the first owner who bought it new in the 90s. And I sold my last one for about £200, I think.
Cheers,
R.