Schneider-Kreuznach AF Tele-Xenar (Tele-Apogon) HFT 150mm F/4 PQS

Short telephoto prime lens • Digital era

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HFT Multi-layer High Fidelity Transfer coating is applied to the surfaces of lens elements. This anti-reflection coating boosts light transmission, ensures sharp and high contrast images, minimizes ghosting and flares. Learn more
PQ Professional lens with high quality optics and robust build. Meets the highest standards and provides excellent performance and flawless image quality unachievable with traditional optical technologies.
S A lens with Direct Drive Shutter which permits speeds up to 1/1000 sec.

Features highlight



Production details
Announced:December 2005
Production status: In production
Original name:Schneider-KREUZNACH AF Tele-Xenar 1:4 f=150mm HFT PQS Lens
Also known as:DHW Fototechnik Tele-Apogon 1:4 f=150mm HFT AF PQS Lens
System:Rolleiflex SLX/6000 (1976)
Optical design
Focal length:150mm
Maximum format:Medium format 6x6
Mount and Flange focal distance:Rolleiflex SLX [74mm]
Diagonal angle of view:29.4° (Medium format)
Lens construction:5 elements in 5 groups
Floating element system
Closest focusing distance:1.4m
Maximum magnification:<No data>
Focusing modes:Autofocus, manual focus
Autofocus motor:Micromotor
Manual focus control:Focusing ring
Focus mode selector:None; focusing mode is set from the camera
Manual focus override in autofocus mode:<No data>
Diaphragm mechanism
Diaphragm type:Automatic
Aperture control:Aperture ring (Manual settings + Auto Exposure setting)
Number of blades:<No data>
Built-in leaf shutter
Type:Electronically controlled Rollei
Speeds:30 - 1/1000 + T, B
Optical Image Stabilizer (OIS)
Built-in OIS:-
Physical characteristics
Maximum diameter x Length:⌀95×114mm
Filters:Bayonet-type VI
Lens hood:<No data>
Teleconverters:<No data>
Sources of data
1. Rolleiflex Hy6 user's manual.
2. Sinar Rolleiflex 6000-system: lenses and dedicated accessories booklet.
3. Rolleiflex Hy6 booklet (April 2008).


  • The lens is not compatible with Rolleiflex SLX, 6006, 6002, 6006 2 medium format film SLR cameras.

Manufacturer description

In German:

Braunschweig, den 19.12.2005 — Das neue AF Tele-Xenar von Schneider-Kreuznach ist mit seinen 150 mm Brennweite das klassische Porträtobjektiv im 6×6-Mittelformat. Die Brennweite umfasst etwa die zweifache Formatdiagonale und liefert somit die ideale Perspektive für klassische Porträts mit Kopf und Schulter. Darüber hinaus eignet es sich hervorragend für formatfüllende Ausschnitte oder Details aus etwas größerer Entfernung. Das AF Tele-Xenar ist ein sehr handliches Objektiv, mit dem auch ohne Probleme aus der freien Hand fotografiert werden kann. Exzellente Abbildungsleistung auch im Nahbereich durch „Floating Element“. Dank der PQS–Technik ist dieses Objektiv bis zu 1/1000 sek. blitzsynchronisiert.

Die Baureihe der PQ und PQS-Objektive ist das Ergebnis modernster Objektivkonstruktionen, innovativer Technologie und einer permanenten Optimierung. Alle Objektive arbeiten mit der von Rollei entwickelten einzigartigen Direct-Drive-Technik. Dabei werden die Blenden- und Verschlusslamellen im Objektiv von zwei Linearmotoren angetrieben und vom Mikrocomputer der Kamera mit höchster Präzision in 1/3 Belichtungsstufen gesteuert und kontrolliert. Die Übertragung der Steuerimpulse zwischen Kamerabody und Objektiv erfolgt über eine 10polige vergoldete Kontaktleiste, reibungslos, verschleißfrei und mit hoher Geschwindigkeit. Alle Wechselobjektive zum Rolleiflex 6000-System repräsentieren eine Objektivgeneration der Extraklasse die neben der Lichtstärke auch noch über den ganzen Verschlusszeitenbereich blitzsynchronisiert sind.

Zeiss und Schneider-Objektive zeichnen sich durch optimale Schärfe, Farbwiedergabe und eine hohe Brillanz aus.



Braunschweig, December 19, 2005 — The new AF Tele-Xenar from Schneider-Kreuznach, with its 150 mm focal length, is the classic portrait lens in the 6×6 medium format. The focal length is about twice the format diagonal and thus provides the ideal perspective for classic head-and-shoulder portraits. In addition, it is ideal for format-filling or details from a greater distance. The AF Tele-Xenar is a very handy lens, with which you can also take pictures hand-held without any problems. Excellent imaging performance, even at close range, thanks to the "Floating Element". Thanks to the PQS technology, this lens is up to 1/1000 sec. flash synced.

The series of PQ and PQS lenses is the result of the most modern lens designs, innovative technology and permanent optimization. All lenses work with the unique Direct Drive technology developed by Rollei. The aperture and shutter blades in the lens are driven by two linear motors and controlled by the camera's microcomputer with the utmost precision in 1/3 exposure steps. The transmission of the control impulses between the camera body and the lens takes place via a 10-pin gold-plated contact strip, smoothly, without wear and at high speed. All interchangeable lenses for the Rolleiflex 6000 system represent a top-class generation of lenses which, in addition to the light speed, are also flash-synchronized over the entire shutter speed range.

Zeiss and Schneider lenses are characterized by optimal sharpness, color reproduction and high brilliance.

Typical application


Slow 6x6 medium-format short telephoto prime lens • Apochromatic optical designProfessional model (Top class)

Apochromatic optical design

All glass elements in an optical system refract light in certain colors to a different extent. This leads to the effect that not all rays of light from a multi-colored subject are focused at a single imaging point – the result of this is chromatic aberration.

In this lens, the chromatic aberration is minimized by apochromatic correction.

A need for apochromatic correction arose with the increasing popularity of color film. Now, with high-resolution digital sensors, the need for superior control of chromatic aberrations is even more pertinent than when film changed from monochrome to color.

Professional model (Top class)

  • Designed for medium format cameras
  • Apochromatic optical design

Genres or subjects of photography (1):


Recommended slowest shutter speed when shooting static subjects handheld:

1/160th of a second

Frequently asked questions (1)

  • Is the AF Tele-Xenar HFT 150mm F/4 PQS lens compatible with teleconverters?

    Schneider-KREUZNACH AF-Longar 1,4x HFT, Schneider-KREUZNACH Longar 1,4x HFT and Rollei Tele Converter 2 x HFT were indeed available for Rolleiflex SLX-system lenses. "Rolleiflex 6000-System. Lenses and Dedicated Accessories" says: "Schneider Longar 1.4x HFT teleconverter: high-quality teleconverter extending the focal length of the basic lens by a factor of 1.4, specially matched with the wide-aperture Schneider lenses 80 mm f/2, 180 mm f/2.8 and 300 mm f/4. Also well-suited for all other telephoto lenses. The 1.4x Longar should not be used in conjunction with the Planar 80 mm f/2.8, since the exit pupil of the Planar would damage the entrance pupil of the converter. 2x Teleconverter HFT: designed for use with any of the standard, telephoto and zoom lenses, this converter doubles the focal length of the basic lens.".

Alternatives in the Rolleiflex SLX/6000 system

Sorted by focal length and speed, in ascending order

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35mm full frame

43.27 24 36
  • Dimensions: 36 × 24mm
  • Aspect ratio: 3:2
  • Diagonal: 43.27mm
  • Area: 864mm2


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Image stabilizer

A technology used for reducing or even eliminating the effects of camera shake. Gyro sensors inside the lens detect camera shake and pass the data to a microcomputer. Then an image stabilization group of elements controlled by the microcomputer moves inside the lens and compensates camera shake in order to keep the image static on the imaging sensor or film.

The technology allows to increase the shutter speed by several stops and shoot handheld in such lighting conditions and at such focal lengths where without image stabilizer you have to use tripod, decrease the shutter speed and/or increase the ISO setting which can lead to blurry and noisy images.

Original name

Lens name as indicated on the lens barrel (usually on the front ring). With lenses from film era, may vary slightly from batch to batch.


Format refers to the shape and size of film or image sensor.

35mm is the common name of the 36x24mm film format or image sensor format. It has an aspect ratio of 3:2, and a diagonal measurement of approximately 43mm. The name originates with the total width of the 135 film which was the primary medium of the format prior to the invention of the full frame digital SLR. Historically the 35mm format was sometimes called small format to distinguish it from the medium and large formats.

APS-C is an image sensor format approximately equivalent in size to the film negatives of 25.1x16.7mm with an aspect ratio of 3:2.

Medium format is a film format or image sensor format larger than 36x24mm (35mm) but smaller than 4x5in (large format).

Angle of view

Angle of view describes the angular extent of a given scene that is imaged by a camera. It is used interchangeably with the more general term field of view.

As the focal length changes, the angle of view also changes. The shorter the focal length (eg 18mm), the wider the angle of view. Conversely, the longer the focal length (eg 55mm), the smaller the angle of view.

A camera's angle of view depends not only on the lens, but also on the sensor. Imaging sensors are sometimes smaller than 35mm film frame, and this causes the lens to have a narrower angle of view than with 35mm film, by a certain factor for each sensor (called the crop factor).

This website does not use the angles of view provided by lens manufacturers, but calculates them automatically by the following formula: 114.6 * arctan (21.622 / CF * FL),


CF – crop-factor of a sensor,
FL – focal length of a lens.


A lens mount is an interface — mechanical and often also electrical — between a camera body and a lens.

A lens mount may be a screw-threaded type, a bayonet-type, or a breech-lock type. Modern camera lens mounts are of the bayonet type, because the bayonet mechanism precisely aligns mechanical and electrical features between lens and body, unlike screw-threaded mounts.

Lens mounts of competing manufacturers (Canon, Nikon, Pentax, Sony etc.) are always incompatible. In addition to the mechanical and electrical interface variations, the flange focal distance can also be different.

The flange focal distance (FFD) is the distance from the mechanical rear end surface of the lens mount to the focal plane.

Lens construction

Lens construction – a specific arrangement of elements and groups that make up the optical design, including type and size of elements, type of used materials etc.

Element - an individual piece of glass which makes up one component of a photographic lens. Photographic lenses are nearly always built up of multiple such elements.

Group – a cemented together pieces of glass which form a single unit or an individual piece of glass. The advantage is that there is no glass-air surfaces between cemented together pieces of glass, which reduces reflections.

Focal length

The focal length is the factor that determines the size of the image reproduced on the focal plane, picture angle which covers the area of the subject to be photographed, depth of field, etc.


The largest opening or stop at which a lens can be used is referred to as the speed of the lens. The larger the maximum aperture is, the faster the lens is considered to be. Lenses that offer a large maximum aperture are commonly referred to as fast lenses, and lenses with smaller maximum aperture are regarded as slow.

In low-light situations, having a wider maximum aperture means that you can shoot at a faster shutter speed or work at a lower ISO, or both.

Floating element system

Provides correction of aberrations and ensures constantly high image quality at the entire range of focusing distances from infinity down to the closest focusing distance. It is particularly effective for the correction of field curvature that tends to occur with large-aperture, wide-angle lenses when shooting at close ranges.

The basic mechanism of the floating element system is also incorporated into the internal and rear focusing methods.

Closest focusing distance

The minimum distance from the focal plane (film or sensor) to the subject where the lens is still able to focus.

Closest working distance

The distance from the front edge of the lens to the subject at the maximum magnification.

Magnification ratio

Determines how large the subject will appear in the final image. For example, a magnification ratio of 1:1 means that the image of the subject formed on the film or sensor will be the same size as the subject in real life. For this reason, a 1:1 ratio is often called "life-size".

Manual focus override in autofocus mode

Allows to perform final focusing manually after the camera has locked the focus automatically. Note that you don't have to switch camera and/or lens to manual focus mode.

Manual focus override in autofocus mode

Allows to perform final focusing manually after the camera has locked the focus automatically. Note that you don't have to switch camera and/or lens to manual focus mode.

Electronic manual focus override is performed in the following way: half-press the shutter button, wait until the camera has finished the autofocusing and then focus manually without releasing the shutter button using the focusing ring.

Manual diaphragm

The diaphragm must be stopped down manually by rotating the detent aperture ring.

Preset diaphragm

The lens has two rings, one is for pre-setting, while the other is for normal diaphragm adjustment. The first ring must be set at the desired aperture, the second ring then should be fully opened for focusing, and turned back for stop down to the pre-set value.

Semi-automatic diaphragm

The lens features spring mechanism in the diaphragm, triggered by the shutter release, which stops down the diaphragm to the pre-set value. The spring needs to be reset manually after each exposure to re-open diaphragm to its maximum value.

Automatic diaphragm

The camera automatically closes the diaphragm down during the shutter operation. On completion of the exposure, the diaphragm re-opens to its maximum value.

Fixed diaphragm

The aperture setting is fixed at F/4 on this lens, and cannot be adjusted.

Number of blades

As a general rule, the more blades that are used to create the aperture opening in the lens, the rounder the out-of-focus highlights will be.

Some lenses are designed with curved diaphragm blades, so the roundness of the aperture comes not from the number of blades, but from their shape. However, the fewer blades the diaphragm has, the more difficult it is to form a circle, regardless of rounded edges.

At maximum aperture, the opening will be circular regardless of the number of blades.


Excluding case or pouch, caps and other detachable accessories (lens hood, close-up adapter, tripod adapter etc.).

Maximum diameter x Length

Excluding case or pouch, caps and other detachable accessories (lens hood, close-up adapter, tripod adapter etc.).

For lenses with collapsible design, the length is indicated for the working (retracted) state.

Weather sealing

A rubber material which is inserted in between each externally exposed part (manual focus and zoom rings, buttons, switch panels etc.) to ensure it is properly sealed against dust and moisture.

Lenses that accept front mounted filters typically do not have gaskets behind the filter mount. It is recommended to use a filter for complete weather resistance when desired.

Fluorine coating

Helps keep lenses clean by reducing the possibility of dust and dirt adhering to the lens and by facilitating cleaning should the need arise. Applied to the outer surface of the front and/or rear lens elements over multi-coatings.


Lens filters are accessories that can protect lenses from dirt and damage, enhance colors, minimize glare and reflections, and add creative effects to images.

Lens hood

A lens hood or lens shade is a device used on the end of a lens to block the sun or other light source in order to prevent glare and lens flare. Flare occurs when stray light strikes the front element of a lens and then bounces around within the lens. This stray light often comes from very bright light sources, such as the sun, bright studio lights, or a bright white background.

The geometry of the lens hood can vary from a plain cylindrical or conical section to a more complex shape, sometimes called a petal, tulip, or flower hood. This allows the lens hood to block stray light with the higher portions of the lens hood, while allowing more light into the corners of the image through the lowered portions of the hood.

Lens hoods are more prominent in long focus lenses because they have a smaller viewing angle than that of wide-angle lenses. For wide angle lenses, the length of the hood cannot be as long as those for telephoto lenses, as a longer hood would enter the wider field of view of the lens.

Lens hoods are often designed to fit onto the matching lens facing either forward, for normal use, or backwards, so that the hood may be stored with the lens without occupying much additional space. In addition, lens hoods can offer some degree of physical protection for the lens due to the hood extending farther than the lens itself.


Teleconverters increase the effective focal length of lenses. They also usually maintain the closest focusing distance of lenses, thus increasing the magnification significantly. A lens combined with a teleconverter is normally smaller, lighter and cheaper than a "direct" telephoto lens of the same focal length and speed.

Teleconverters are a convenient way of enhancing telephoto capability, but it comes at a cost − reduced maximum aperture. Also, since teleconverters magnify every detail in the image, they logically also magnify residual aberrations of the lens.

Lens caps

Scratched lens surfaces can spoil the definition and contrast of even the finest lenses. Lens covers are the best and most inexpensive protection available against dust, moisture and abrasion. Safeguard lens elements - both front and rear - whenever the lens is not in use.