VITREA WETZLAR · 35mm 1:1.4 · Nº 0114

VITREA

Order

Bench 02 · serial 0114 · your scroll opens the barrel

I — SEATED
II — SEPARATE
III — LIGHT PATH
IV — SEATED

ELEMENTS: 11
GROUPS: 4
COATINGS: 6
APERTURE: f/1.4
FOCAL: 35mm

Look inside the 35.

Eleven elements. One pair of hands.

Assembled in Wetzlar · forty lenses a year

AXIAL SEPARATION 0%

Every surface is on the sheet.

We publish the whole prescription — radii, glass types and coating runs — because a lens you cannot inspect is a lens you have to take on faith. Ours does not ask for any.

EL	GRP	GLASS	COATING	R (mm)
01	I	Aspheric crown	T-14 cyan	82.4
02	I	Crown	T-14 cyan	−214.0
03	I	Flint	T-9 amber	48.1
04	II	Cemented flint	T-2 violet	−37.6
05	II	Cemented crown	T-2 violet	121.9
06	III	Crown	T-9 amber	64.7
07	III	Aspheric flint	T-14 cyan	−88.2
08	III	Crown	T-9 amber	39.5
09	IV	Flint	T-14 cyan	−52.3
10	IV	Lanthanum crown	T-2 violet	96.8
11	IV	Field flattener	T-9 amber	−410.5

Forty lenses leave here a year.

BENCH 02 · WETZLAR

01
Melt
Glass is poured in 40kg pots and annealed for nine days. A pot yields enough for four front elements, or none.
02
Grind
Curves are generated, then hand-lapped against test plates until the interference fringes go straight.
03
Coat
Six coating runs per surface in a vacuum chamber the size of a wardrobe. The colour you see is the layer stack.
04
Seat
One person seats all eleven elements, shims the spacing, and signs the barrel. Their initials go under the mount.

25mm
SPEED
T1.5
EL / GRP
13 / 5
WAIT
14 months
35mm
SPEED
T1.4
EL / GRP
11 / 4
WAIT
9 months
75mm
SPEED
T1.4
EL / GRP
9 / 4
WAIT
11 months

The list is open. The queue is not short.

Join the list

VITREA WETZLAR · 35mm 1:1.4 · Nº 0114

VITREA

Order

Bench 02 · serial 0114 · your scroll opens the barrel

I — SEATED
II — SEPARATE
III — LIGHT PATH
IV — SEATED

ELEMENTS: 11
GROUPS: 4
COATINGS: 6
APERTURE: f/1.4
FOCAL: 35mm

Look inside the 35.

Eleven elements. One pair of hands.

Assembled in Wetzlar · forty lenses a year

AXIAL SEPARATION 0%

Every surface is on the sheet.

We publish the whole prescription — radii, glass types and coating runs — because a lens you cannot inspect is a lens you have to take on faith. Ours does not ask for any.

EL	GRP	GLASS	COATING	R (mm)
01	I	Aspheric crown	T-14 cyan	82.4
02	I	Crown	T-14 cyan	−214.0
03	I	Flint	T-9 amber	48.1
04	II	Cemented flint	T-2 violet	−37.6
05	II	Cemented crown	T-2 violet	121.9
06	III	Crown	T-9 amber	64.7
07	III	Aspheric flint	T-14 cyan	−88.2
08	III	Crown	T-9 amber	39.5
09	IV	Flint	T-14 cyan	−52.3
10	IV	Lanthanum crown	T-2 violet	96.8
11	IV	Field flattener	T-9 amber	−410.5

Forty lenses leave here a year.

BENCH 02 · WETZLAR

01
Melt
Glass is poured in 40kg pots and annealed for nine days. A pot yields enough for four front elements, or none.
02
Grind
Curves are generated, then hand-lapped against test plates until the interference fringes go straight.
03
Coat
Six coating runs per surface in a vacuum chamber the size of a wardrobe. The colour you see is the layer stack.
04
Seat
One person seats all eleven elements, shims the spacing, and signs the barrel. Their initials go under the mount.

25mm
SPEED
T1.5
EL / GRP
13 / 5
WAIT
14 months
35mm
SPEED
T1.4
EL / GRP
11 / 4
WAIT
9 months
75mm
SPEED
T1.4
EL / GRP
9 / 4
WAIT
11 months

The list is open. The queue is not short.

Join the list

Every surface is on the sheet.Everysurfaceisonthesheet.

Forty lenses leave here a year.Fortylensesleavehereayear.

Melt

Grind

Coat

Seat

The list is open. The queue is not short.Thelistisopen.Thequeueisnotshort.

Every surface is on the sheet.Everysurfaceisonthesheet.

Forty lenses leave here a year.Fortylensesleavehereayear.

Melt

Grind

Coat

Seat

The list is open. The queue is not short.Thelistisopen.Thequeueisnotshort.

Every surface is on the sheet.

Forty lenses leave here a year.

The list is open. The queue is not short.

Every surface is on the sheet.

Forty lenses leave here a year.

The list is open. The queue is not short.