For those with 35mm Summilux V2 lenses

[pedaes]

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Might be of interest

https://omnarlenses.com/product/omnar-brass-e39-brass-rim-kit-for-35mm-summilux-v2-lenses/?_kx=MgCYhNrsBC6qI03IRkVH8_V0RbTLkgbAsFg8iFo2gsDSniXAgyZHCMmstCTAfDKR.XmqH25

[lct]

E41 then series VII filters have been chosen to avoid vignetting if i remember well so i would make sure that E39 filters can fit from this viewpoint.

[blackdot]

That price is silly. 

[pedaes]

8 hours ago, lct said:

vignetting

In the description they claim no vignetting and they are a reputable company. I do not have this lens and posted only for information as I know finding filters for this lens has been an issue.

[lct]

2 hours ago, pedaes said:

In the description they claim no vignetting and they are a reputable company [...]

Strong vignetting has been reported on another lens, the Omnar 42/4.5, so i will wait and see serious reviews of that expensive ring, if any.

https://www.35mmc.com/15/05/2023/omnar-lt42-45-barnack-leitz-summar-42mm-f-4-5-lens-review/

[pedaes]

Post #54 by @Crem in this Thread may provide answer for you after his testing

 

[lct]

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8 minutes ago, pedaes said:

Post #54 by @Crem in this Thread may provide answer for you after his testing

 

With E39 filters not really for me sorry but thank you for sharing 🙂

[Crem]

The manufacturer has repeatedly said it won't vignette when used with compatible filters. They are betting their reputation on that statement so I trust them on it. They clearly have a lot of skill in both optical and mechanical engineering. I'll definitely test it once I receive mine (and my lens back from DAG). Their latest Instagram talks about vignetting because they must be getting a lot of questions about it: https://www.instagram.com/p/DAGLphLoawA/

Copy and pasted the text below in case you can't read Instagram...

 

Filter info for the E39 Brass Rim kit by @omnarlenses for the Leica 35mm Summilux V2.

We have gotten a few questions about what filters work best with the E39 brass rim kits.
When designing the E39 Brass Rim kit, we procured a wide variety of 39mm threaded filters to test with.

We have found that genuine leica made E39 filters have a 35mm open glass diameter, and thus permit zero vignetting when used on our kits. Its these genuine Leica E39 filters we recommend (such as 13030, 13081, HOOAR..etc.)

Certain vintage E39 filters made by Walz and B+W, that also have 35mm open glass diameters.. appear to work fine also.

Filters that have smaller than 35mm open glass diameter (such as K&F, Heliopan, modern B+W Professional, generic/ off brand M39..etc), may or may not induce vignetting depending on the exact size of the open glass diameter in the filter.. We would recommend against using these filters with the E39 Brass Rim kits, as they could induce vignetting.

Something else to note:
We discovered thru the filter evaluation process, the existence of counterfeit/ fake branded Leica filters. 🤯
Leica has been made aware of these counterfeit filters.

These filters have Leica branding on them (and look somewhat like the real thing at quick glance), but when examined closely, differences between these counterfeit filters and the real filters become apparent. Probably the easiest way to tell if the filter is a counterfeit is measuring the open glass diameters with a pair of calipers. The genuine Leica made opens are 35mm, whereas the counterfeits are 34.35mm.
The counterfeits are also laser engraved (instead of machined) and have green coatings (whereas the genuine ones have more of a deeper blue coating).

We don’t know who makes these counterfeit filters (we obtained a few from someone locally who bought them off a popular auction website and had suspicions about their authenticity).

If you are in the market for a Leica filter for usage on these E39 kits, our recommendation is to buy directly from Leica to avoid getting these counterfeits that seem to exist out in the wild.

[Crem]

14 hours ago, lct said:

E41 then series VII filters have been chosen to avoid vignetting if i remember well so i would make sure that E39 filters can fit from this viewpoint.

As best as I can determine, they shorten the overall height of the lens with their custom front ring. I think I read something like 1.5mm shorter. So it boils down to the filter being very close to the front element and having to use specific filters with a very wide image circle. I've read up on the company a lot and I came away thinking they are very professional and intelligent. That's why I decided to give this a shot and trust them on their vignetting statements. We shall see once I am able to do some testing. I'm emailing DAG to see if he knows when my lens will come back to me. Sounds like the rings are shipping out tonight.

[pippy]

On 9/19/2024 at 4:19 PM, Crem said:

The manufacturer has repeatedly said it won't vignette when used with compatible filters. They are betting their reputation on that statement so I trust them on it......I'll definitely test it once I receive mine......

Do you have any Leitz e39 filters to hand, Crem? If so then could you replicate the test I undertook the result of which can be seen in post #48 of 'the other thread'?

I would be interested to see what happens with your lens / filter pairing as I can't imagine how there could be no corner cut-off unless, perhaps, the front element of my v2 is deeper set / further away from the front face of the non-filter-mount.

Philip.

Edited September 21, 2024 by pippy

[lct]

Simply dropping a Leica E39 filter onto my Summilux 35/1.4 v2 produces strong vignetting at any aperture. Below at f/16. No wonder why the v1's Leica filters were E41 and the v2's series VII.

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[Crem]

7 hours ago, pippy said:

Do you have any Leitz e39 filters to hand, Crem? If so then could you replicate the test I undertook the result of which can be seen in post #48 of 'the other thread'?

I would be interested to see what happens with your lens / filter pairing as I can't imagine how there could be no corner cut-off unless, perhaps, the front element of my v2 is deeper set / further away from the front face of the non-filter-mount.

Philip.

 

4 hours ago, lct said:

Simply dropping a Leica E39 filter onto my Summilux 35/1.4 v2 produces strong vignetting at any aperture. Below at f/16. No wonder why the v1's Leica filters were E41 and the v2's series VII.

@pippy I just ordered up the official Leica e39 UVa II filter. It should be here next week. DAG says my lens will be back sometime in the next week or two (I sent it in for 6 bit coding 2 months ago). Once I have everything I'll try what you said and report back.

@lct They claim the replacement ring shortens the lens (I think they said 1.5mm) so they must sink the filter closer to the front element. Especially since you said your test vignettes at all apertures. The only other idea I have is that maybe there are different versions of the Leica E39 filter? Is yours the latest?

I did a bit of research on the company before I ordered: It's sold by https://omnarlenses.com and engineered by https://skyllaney.com. The two main people behind it are Hamish Gill (owner of http://35mmc.com) and Christopher Andreyo. I've read 35mmc for years and the work I see done by Christopher looks very impressive.

You can see a bunch of their work on social media...

https://www.instagram.com/omnarlenses/

https://www.instagram.com/skyllaneyoptomechanics/

I also emailed with Skyllaney a bit about modifying my Steel Rim Reissue for close focus. Overall I got a good feeling about them. This is everything I know about the company and people behind the brass ring kit. Based on my research I felt like it was well worth the risk to try it out. 🙏

Edited September 21, 2024 by Crem

[lct]

I used a Leica 13410 UV/IR E39 filter for my pic above but whatever the filter i feel difficult to understand how an additional ring can shorten the lens in any way since there is no ring to replace on my German made v2 copy. Maybe i'm missing something though. I will wait and see what you think when you receive your ring with hope that i am wrong. Thank you for sharing anyway 😎

[Crem]

40 minutes ago, lct said:

I used a Leica 13410 UV/IR E39 filter for my pic above but whatever the filter i feel difficult to understand how an additional ring can shorten the lens in any way since there is no ring to replace on my German made v2 copy. Maybe i'm missing something though. I will wait and see what you think when you receive your ring with hope that i am wrong. Thank you for sharing anyway 😎

I believe I ordered a 13030. I’m not familiar with the 13410, but all I can guess is it has a slightly smaller image circle. I think they said the circle must be minimum 35mm. They say a lot of common filters like the B+W are less than that and incompatible. That’s my best logical guess as to what you experienced. It’s also possible I’ve been scammed. I’ll give it 50:50 odds 😂

[LocalHero1953]

Skyllaney is one of the best lens servicing and engineering companies in the UK. They serviced and 6-bit coded my Summilux M 75, and others here have used them. Like any such successful business, their website says they aren’t taking new work till 2025.

 They were also in the business of building classic Zeiss and Contax lenses into new bodies and M mounts, and made a repro of the first Bertele Sonnar. Reading between the lines, the business got a bit complex, so they have separated the new/rebuilt lens business into Omnar, while Skyllaney does the servicing.

 Other than as a customer, I know little about either business, but my experience so far is positive. I wouldn’t mind buying a Bertele Sonnar reproduction in M mount myself, if they ever get round to it again!

[Greenhilltony]

10 hours ago, lct said:

I used a Leica 13410 UV/IR E39 filter for my pic above but whatever the filter i feel difficult to understand how an additional ring can shorten the lens in any way since there is no ring to replace on my German made v2 copy. Maybe i'm missing something though. I will wait and see what you think when you receive your ring with hope that i am wrong. Thank you for sharing anyway 😎

That’s not adding a ring to your V2. It’s replacing the current clip-on ring for 12504 and other E39-compatible clip-on hood, with their products. Screw off three tiny screws around the clip-on ring and it’s ready to go.

[lct]

7 hours ago, Greenhilltony said:

That’s not adding a ring to your V2. It’s replacing the current clip-on ring for 12504 and other E39-compatible clip-on hood, with their products. Screw off three tiny screws around the clip-on ring and it’s ready to go.

What you call clip-on ring is a part of the 12504 hood if i understand well (pic). I don't see how replacing that part, or a part of it, by whatever ring can shorten the lens but again i may be wrong.

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[Greenhilltony]

5 hours ago, lct said:

What you call clip-on ring is a part of the 12504 hood if i understand well (pic). I don't see how replacing that part, or a part of it, by whatever ring can shorten the lens but again i may be wrong.

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It has nothing to do with the 12504 hood. It is marked in red and the screws I mention is marked in yellow, on this photo of German V2 from internet.

[Greenhilltony]

@lct also showing my V2 modded to a customized steel rim which accepts E43 filters. It replaces the part we are discussing. And installing the omnar E39 front rim is exactly the same procedure. Therefore it could be possible that they shorten the height of the rim so that some E39 filter won’t vignette.

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Hallo,

Look here: Leica M

[pippy]

16 hours ago, Greenhilltony said:

It has nothing to do with the 12504 hood. It is marked in red and the screws I mention is marked in yellow, on this photo of German V2 from internet...

 

16 hours ago, Greenhilltony said:

@lct also showing my V2 modded to a customized steel rim which accepts E43 filters. It replaces the part we are discussing. And installing the omnar E39 front rim is exactly the same procedure. Therefore it could be possible that they shorten the height of the rim so that some E39 filter won’t vignette...

Ah!

OK; I think I get the picture now.

I don't have the lens to hand at this very second (and, anyhow, our cat is fast asleep on my lap) but unless I'm (still!) mistaken there is a ring on the front of the v2 Summilux which can be removed(?) and the Omnar ring replaces this front part of the lens.

I hadn't thought about the Omnar ring working like this at all but this would also explain one part of their text as seen in the link posted in pedaes' opening post, to wit;

"An additional benefit of the E39 Brass Rim is that it reduces the height of the overall lens by 1.5mm from stock configuration when no filter is installed."...

I must have a look at that area on my own lens (when 'Scrap' gives me the chance...).

Philip.