SKU: 50699407274

leitz 90mm f4 elmar m39 prototype 3 element lens eigentum der ernst leitz gmbh wetzlar 2

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Description

leitz 90mm f4 elmar m39 prototype 3 element lens eigentum der ernst leitz gmbh wetzlar 2Zeer interessante set van 2 Leitz 9cm f4 Elmar prototype lenzen met opeenvolgende nummers in Leica M39 schroefvatting. Het is niet precies duidelijk voor welke lens dit model werd gebruikt. In Vidom 12 (maandblad van de Duitse Leica Historica) op pagina 18 19 verwijst Willy Hahne naar de Leitz 90mm Elmar collapsible lens. James L. Lager verwijst echter in zijn boek "Leica An Illustrated History Volume II Lenses" op pagina 126 naar een prototype van de

Zeer interessante set van 2 Leitz 9cm f4 Elmar prototype lenzen met opeenvolgende nummers in Leica M39 schroefvatting.

Het is niet precies duidelijk voor welke lens dit model werd gebruikt. In Vidom 12 (maandblad van de Duitse Leica Historica) op pagina 18 / 19 verwijst Willy Hahne naar de Leitz 90mm Elmar collapsible lens. James L. Lager verwijst echter in zijn boek "Leica An Illustrated History Volume II - Lenses" op pagina 126 naar een prototype van de latere Leitz 90mm f4 Elmar 3 element lens.

Enkele verschillen tussen alle lenzen:

De lenzen hebben 14 diafragmabladen terwijl de latere collapsible lenzen slechts 10 diafragmabladen hebben.

De diafragmaring op de prototype lenzen heeft een compleet ander ontwerp vergeleken met die van de collapsible en standaard lenzen.

De lens in het boek van James L. Lager heeft een iets andere scherpstelverdeling en gaat tot 50m, 100m en 300m. De 2 aangeboden prototype lenzen en de lenzen in Vidom 12 gaan tot 50m en 100m terwijl de latere productielenzen de 50m, 100m of 300m schaal niet hebben.

De complete kop is anders vergeleken met standaard versies. De voorring heeft een ander ontwerp maar ook de gravering is anders. Het diafragma is dichter bij het voorste lensdeel gebouwd dan eerdere versies. De lens is ook gegraveerd met "Eigentum der Ernst Leitz GmbH Wetzlar".

Ongeveer 50 stuks van deze versie met de gravering "Eigentum der Ernst Leitz GmbH Wetzlar" en nog eens 50 stuks van de collapsible lenzen zonder gravering zijn gemaakt in de batch met serienummers tussen 1010001-1010100.

Zoals vermeld worden 2 identieke lenzen met opeenvolgende serienummers (1010051 en 1010052) aangeboden. Dit en het feit dat de lenzen een ander ontwerp hebben in vergelijking met de standaard lenzen, maken ze zeer interessant.

De lens met serienummer 1010051 vertoont behoorlijk wat gebruikssporen wat niet ongewoon is voor Leitz Eigentum lenzen. De lensdelen vertonen ook diverse krassen. De lens wordt geleverd met een Screw-M mount adapter, voorlensdop en 2 achterlensdoppen (de witte werkt niet zo goed). De lens wordt beoordeeld als A/B.

De lens met serienummer 1010052 komt uit een Europese collectie en is in veel betere staat dan die met nummer 1010051. De lensdelen hebben duidelijk minder gebruikssporen en de behuizing ziet zeer mooi uit zonder grote gebruikssporen. Deze lens wordt geleverd met een Screw-M mount adapter, voorlensdop en een M en M39 achterlensdop. Deze lens wordt beoordeeld als Mint-

De set wordt als geheel als A+ beoordeeld.

Om het verschil in ontwerp te verduidelijken, wordt de prototype lens op foto nr. 38 vergeleken met een standaard Leitz 90mm Elmar collapsible lens en op foto nr. 39 met de standaard Leitz 90mm Elmar lenzen. Let op dat deze foto alleen bedoeld is om het verschil tussen de lenzen te verduidelijken. Geen van de 4 standaard lenzen wordt aangeboden in deze verkoop. De 2 lenzen die op foto nr. 1 tot en met foto nr. 37 worden getoond, worden wel verkocht.

Literatuur:

Willy Hahne "Seltene Objektive: Vormodell Elmar 4/90 versenkbar (Zeldzame lenzen: Voorserie Elmar 4/90 collapsible)" Vidom 12 pagina 18/19
James L. Lager "Leica An Illustrated History Volume II - Lenses" pagina 126

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SKU: 50699407274

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★★★★★ 5
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Reviewed in the United States on May 6, 2026
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★★★★★ 4
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Color: Cooling Blue Cover, Size: Queen (Pack of 2)
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Reviewed in the United States on April 20, 2026
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Jonathan
Battle Creek, US
★★★★★ 5
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Color: Cooling Blue Cover, Size: King (Pack of 2)
I purchased these pillows because we were in need of new pillows, I previously had allswell pillows which were from walmart and they were good to start but now they tragically became very sparse and it started to effect my sleep so I saw these after careful review on other pillows and reviews I came across these and I saw some reviews and videos and I ordered them.. first they are king size we ordered they are perfect for the bed, they are plump and soft, they are memory foam which has always worked out for me for support and kept it’s shape these are great it did have a little smell I guess from packaging but other than that they are a huge upgrade from what we had before! I’m excited because they are cooling too! for the price point can’t beat it and this is coming from someone who was about to spend money on a purple pillow this will be good for now definitely buy it.
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Reviewed in the United States on March 28, 2026
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PilarC
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★★★★★ 3
Inconsistent
Color: Cooling Blue Cover, Size: Queen (Pack of 2)
Ive ordered two different batches of these pillows, the first was a 2 pack, the second batch was a 4 pack. The pillows that came in the 2 pack have a different quality to them. The memory foam feels thicker, takes long to depress and to spring back to form. It offers more resistance, a heavier odor (at the start), and was the pillow that I fell in love with. Things changed when I ordered the 4 pack a couple months later. There was an inconsistency between the foam in these two different batches. both sets of pillows are comfortable. The first batch being firmer means I had to remove more foam before it became comfortable but the 2nd batch being more springy, I was able to keep all the foam inside. I docked a couple stars because I’m not able to provide a consistent experience with these pillows across all three beds in my home. If you need a pillow, order a set and be happy. If you want a bunch of memory foam pillows throughout your house, maybe look elsewhere as these may not all be identical.
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Mari
Dallas, US
★★★★★ 5
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Color: Cooling Blue Cover, Size: Queen (Pack of 2)
These pillows are everything described on the site. They do retain shape and don’t flatten out after sleeping all night. They are nice and clean looking and comfortable. The fit on my king size bed is perfect cause I prefer the size to king size. Haven’t had to wash them yet but I have had other pillows with the same material inside and the wash ability is great.
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