Leica E39 UVa II on 35mm APO Summicron-M - Vignette at f2?

[tdxxas]

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I'm about to acquire a 35 APO Summicron-M, and would like to get a protective filter for it. I wonder if anyone has experience with the Leica E39 UVa II on this lens, and whether it vignettes the extreme corners at f2.

Ordinarily, I'd go with a B+W MRC, but on my 50 Summicron they are enough thicker in the rim to enter the field of view at f2 and darken the corners. Only my older brass-rimmed Leica UVa I, with its 2mm rim, does not. But the newer, aluminum-rimmed UVa II and the 35 APO are both unknowns for me, and it's not clear that the thinner Leica-brand filter is either necessary or sufficient to avoid vignetting. Also, Roger Cicala, in his careful testing of UV filters, found the Leica brand filters to the marginally better than all the rest:

https://www.lensrentals.com/blog/2017/06/the-comprehensive-ranking-of-the-major-uv-filters-on-the-market/

(I know, I know, "Why would I put a filter on the front of such a high-performing lens?" Call me paranoid, but I just prefer a filter to a lens cap, and when I'm in the rare situation where I'm worried about reflections, I remove the filter.)

[TomB_tx]

Having bought a lot of well-used lenses, the ones that "lived" behind filters tend to have glass in much better shape. While I've encountered reflections in some lighting conditions with filters, I keep them on nearly all my lenses. (True: glass types and coatings used to be much softer, so may not be as important today.)

A bit of vignetting doesn't bother me - I used to dodge & burn a lot doing enlarging to add it.

[MarkP]

No, it does not vignette

[tdxxas]

2 hours ago, TomB_tx said:

A bit of vignetting doesn't bother me - I used to dodge & burn a lot doing enlarging to add it.

I too routinely burned in the edges in the darkroom, and when processing images in Lightroom, I typically either turn off Enable Profile Corrections or set Vignetting correction to something close none, and even then I usually add a bit of Post Crop Vignetting. So I like that effect. But, the kind of vignetting I'm talking about is a hard and rather ugly darkening that effects only the extreme corners and it's hard to correct.

[tdxxas]

1 hour ago, MarkP said:

No, it does not vignette

Thanks, Mark. I'll order the filter.