summilux 35mm pre-asph.

35mm Summilux pre-ASPH (PA) v1 vs v2

Looking back after writing, this is long, sorry, I’m sure everyone will not agree, but it's my take till someone shows me differently. I’m been using a 35 Summilux pre-ASPH for going on 40 years. It is a very fun, versatile, creative and usable lens once you get to know it. (and I could qualify the 'it', with 'your example.')

I’ve had multiple examples of both versions (but not of its last ‘German’ years in production)

I had an earlier example of the v1 and later generation in the same serial number range as Erik's. Both are examples of one of the best made and most beautiful mounts Leitz ever made I feel. Optically both were flare prone, with that ‘Leica glow’ wide open. They were not the best optically (the later was better) till stopped down in the traditional classic way 2 stops and then some. The hood is much better than the v2, deeper and the squarish style helps.

I’ve had 3 examples of the v2. A couple early with the locking focus tab, and one from the early/mid-70s. The best of them optically was the earliest but used the later - my first one - for about 20 years as my ‘go-to’ 35mm lens before the ASPH came along. The v2 basic physical design was the same as the v1 with 2 differences; v1 chrome over brass mount was changed to the black anodized alloy metal (the very rare v1 in black was actually the same with alloy mount to accommodate the black anodizing). Leitz was moving in the mid/the late 60s to lighter and still very strong alloy lens mounts. The other difference was the front steel hood mount ring changed for the round clip-on hood for series filters, which Leitz was simplifying their filter catalog with for both R and M lenses at that time.

The v2 was always thought of (by every and anyone) as a slight upgrade in performance as far as my experience, up till the v1 became a ‘collector’s’ item in the 90s+. The extra ‘Leica-look’ (glow) collector’s seemed to value, along with the heavy brass mount, and out of production rarity, a justification for the higher price. The optical glass layout of both versions is the same, and Leitz always advertised both as having ‘exotic glass.’ Take them apart, except for the advancement in lens coatings, glass looks the same. As a Leica factory repressive told me in the early 70s, ‘ Leica did not have a policy of making optically inferior lenses with next versions. Optical changes were always for better optical quality.’ ('character' is another thing, some [like me] will always like their earlier versions)

The change in glass type from v1 and v2 seems to be one of those internet myths that took hold a few years ago. I would like to see some documentation on it, (respectfully) besides speculation, wishful thinking, and hearsay. The Leica technicians/history folks I trust have said no. If anything the advancements in lens coatings have improved the optical signature of the lens over its long production run.

The most important consideration that few folks talk about is the challenge and difficulty of assembling this lens imposed from the beginning. It has to be very exact, from paper to actual production. I remember Tom A. mentioning he had his v2 example factory (Midland) collimated to assure the best optical quality with this in mind. Having had as I said above a few examples of these lenses I can also say they were all generally good, but one v2 did stand out.

Optical performance variations in production examples are nothing new, even with Leitz/Leica. Some examples of the same lens are just better [or worse] than others on the test bench. In the mid-70s I was involved with a University research project that ‘hand selecting’ Leica (Leicaflex) lenses with the best optical quality of a production run (and they were then disassembled, collimated and sealed with nitrogen gas for as good as it could get). With the 35mm Summilux PA being one of the most difficult lenses to assemble for exactness, a challenging optical design to begin with, and the with the technology of the time, optical variations should not be any surprise, maybe more so than any other lens they made at the time (well maybe the original Noctilux is in that class, and shows the same degree of challenging designs). I've heard of the 35 Summilux described as 'a dog,' and 'all-bokeh,' shows there is an opposite side to the better examples too.

Erik’s V1 photo examples I’ve seen here are very beautiful and shows a lens that is one of those best examples (and a very good photographer also). Maybe one of THE best examples of the v1, because I’ve seen other v1 examples that, yes, could be very poor optically. The v1 did not have a good reputation for many years among professional photographers, and there was a reason for this (Jim Marshell went with v2 because of this I know). And to just throw a bit more ‘controversy’ into this mix… ;-) I talked to a very well known Leica Technician that said he felt the last German examples were the best ('in general' I'll assume) because the assembly technique there was better [than Canada], ouch.

So, if you have a good example; German, Canada, v1, v2, chrome, black, titanium, or whatever... hold on to it. An 'entertaining' lens in every way!
 
35mm Summilux pre-ASPH (PA) v1 vs v2


The change in glass type from v1 and v2 seems to be one of those internet myths that took hold a few years ago. I would like to see some documentation on it, (respectfully) besides speculation, wishful thinking, and hearsay. The Leica technicians/history folks I trust have said no. If anything the advancements in lens coatings have improved the optical signature of the lens over its long production run.

Agreed! ^^^ and an excellent summary dreamsandart.

Regards

Simon
 
Can you screw out the lens head (the optical unit) out of this one?

Erik.

I have 21670XX from 1966, it seems to be a very early V2 with black paint on brass infinity lock and you can unscrew the lens head from the mount...

It's good at full aperture and excellent from f2.0 onwards but, the optics do need a clean, I can see some faint haze. I must get it off to Malcolm Taylor one day soon.

Regards

Simon
 
So, if you have a good example; German, Canada, v1, v2, chrome, black, titanium, or whatever... hold on to it. An 'entertaining' lens in every way!

Excellent summary dreamsandart!
That sums up my experience as well. I had a V1 that looked hardly used but was a dog in terms of flare and it didn't resolved well (relative to the version 2 I had) wide open. I recently compared a V2 Canadian (friends) with a V2 German assembled and the resolution difference was quite noticeable across the frame till f4. I suspect like you said, both time and luck with assembly play a role.

I've had similar experience with M bodies. Some that I've had (M4 and MP) I couldn't keep out of the repair shop. My M6 and an M3 I sold to Michael B. just keep on chugging. Once you find a good one...hold on to it like you said!

(P.S. Good luck to your Tigers who are still in the hunt, 4 games back)
 
I enjoy the write-up of Dreamsandart very much and I thank him for his praise for my photographs, but I cannot agree with him.

I have not one, but two v1 silver chrome Summilux 35mm lenses, no. 1777220 and no. 2060691. They perform absolutely equal. I also have an aluminium 35mm f/1.4 Summilux in black with an infinity lock, no. 2221365. This one performs completely different and inferior too: the focus plane is not flat, but curved and the images show at the larger f/stops a glow not unlike Simons picture above. The coatings and the construction of the lens are completely different from the earlier versions.

However, I have seen results from later 35mm f/1.4 lenses of the same model, but without infinity lock, that were better.

Erik.
 
I enjoy the write-up of Dreamsandart very much and I thank him for his praise for my photographs, but I cannot agree with him.

I have not one, but two v1 silver chrome Summilux 35mm lenses, no. 1777220 and no. 2060691. They perform absolutely equal. I also have a black aluminium 35mm f/1.4 Summilux in black with an infinity lock, no. 2221365. This one performs completely different and inferior too: the focus plane is not flat, but curved and the images show at the larger f/stops a glow not unlike Simons picture above. The coatings and the construction of the lens are completely different from the earlier versions.

However, I have seen results from later 35mm f/1.4 lenses of the same model, but without infinity lock, that were better.

Erik.

Erik,

That is as may be but, and I am sorry, to go making statements that the V1 lens has more exotic glass is misleading and totally within the realms of internet hearsay as dreamsandart mentions in his post. You make nice pictures with your 35 Summilux but your comments on glass types are totally unsubstantiated. If the V1 lens had a different glass we all know that it would be all over the internet and public knowledge. Sorry...

Regards

Simon
 
Sorry Erik but that is not proof of different glass for V1 Summilux! It's a page from a Canon RF magazine with a picture and a patent number filed in 1959 for the (then) upcoming 35 Summilux lenses. There is obviously no mention of a V2 lens or a different glass type with the document.

Regards

Simon
 
Unfortunately the website is written by Fred m
He has published articles on what makes a wartime Zeiss sonnar 50 f1.5 in Leica mount genuine
The pictures he uses are not genuine wartime sonnars and the characteristics he lists to
Identify them are in error
I don't consider him a top notch source
Perhaps he's right on this one , but I have doubts

I think it has more to do with the brass mount ,
And precision machining of the early type
I had a type ii Canada 262xxxx that's was great back in the 1980's
Wide open it lacked contrast stopped down f2 it improved quite a bit
It was still sharp wide open at 1.4 the contrast made it seem not as sharp as stopped down

The f1.8 nikkor and canon lenses are only about a 1/4 or 1/3 stop faster than f2
The summilux is a full stop faster , tri x and the light is leaveing
 
I hesitated about writing this up and hoped not to ruffle feathers, but I’m just seeing this ‘glass change’ reasoning too often and felt I needed to step in with a different perspective.

To summarize in two words: ‘’production variations’

I think I’ve laid it out fairly easy to understand as for how this happens with the 35 Summilux v1 and v2. It wasn’t uncommon for a professional photographer to check a few examples of any one type of lens to find the best example back in my day. Leica was usually pretty good about this (after all, you did pay ‘list price’ back then, there were no discounts). My original v2 was given to me by the Leica Rep. to try out (he thought I’d like it better for my work over the Summicron I’d planned to get), and I was told if I didn’t like it he’d get me another to test.

Good, and not so good, some excellent, maybe more variation in optical quality than any other Leica lens. This is not to say there are a lot of not so good examples, Leica did a quality bench test of their lenses out of production, a few may have been borderline that were sold, but most were good to very good I think.

Erik, if you have two v1 examples that are that good, count yourself very fortunate. That beautiful solid brass mount was more expensive to make, one of the reasons Leitz was going to lighter, just as strong (maybe more so) and less time consuming to machine alloy, the change in lens mount material definitely gives a different feel to the handling. I also would not discount that better v1 hood as a factor in over-all optical quality, the 35 Summilux big weakness with that large front element has always been flare, which the v2 hood is pathetic at preventing stray light.
 
I think that the comments above from enasniearth, dreamsandart and michaelwj all make excellent points that we must bear in mind here. This kind of discussion also reminds me that we no longer have Tom A's reasoned and experienced input anymore and isn't that missed...

Erik, I enjoy seeing the pictures that you make with your 35 Summilux and TMY-2 combination, I just think that care needs to be taken with remarks that are made and cannot be proved, that is all. Lets put this glass discussion on the shelf until something more substantial comes along shall we?! 🙂

Kind regards,

Simon
 
While it's still (vaguely) relevant, I found a few shots from the V1 steel rim lens that I tried earlier this year. What amazed me was that the lens went straight onto my Monochrom and focused perfectly. On inspection I could see no evidence of machining or alteration at the rear either...

This is at full aperture:-

Leica 35mm Summilux V1 (steel rim) full aperture by Flat Twin, on Flickr
 
In this last shot from Simon I recognize a bit the same type of imaging that I know from my examples of the steel-rim. In my opinion this type of imaging differs quite a lot from the shot of the three boys above (great shot by the way).

Both examples of my steel rim lenses needed a correction of their roller curves, not for infinity, but for close-ups (1 meter and 65cm respectively), right in the middle of the picture. I think that many of these lenses needed this correction already when they left the factory and that the lenses were ment to be matched to specific bodies. This correction of the curve is a specialist job and is very time consuming. This necessary correction may count for the bad reputation of these lenses.

The lens that is used for the "Better Coffee" sign above seems to have a correct focusing curve. The Monochrome is very unforgiving in this respect.

Erik.

Correct focusing on coffee-cup of lens no. 1777220 @ full aperture (note the velvet bokeh in the background):

27703130871_67db449bf8_c.jpg
 
Thank you, cging, for this very interesting addition.

I find this an interesting note: "it should be clearly understood that many variations and modifications may occur to the skilled in the art, particularly after benefiting from the present teaching, without departing from the spirit and scope of the invention as defined in the appended claims"

Erik.
 
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