Third-party lens

Tamron SP 2X Teleconverter 01F

Teleconverter • Film era • Discontinued

Tamron SP 2X Teleconverter 01F

Specification

Production details
Announced:<No data>
Production status: Discontinued
Original name:TAMRON SP BBAR MC TELECONVERTER 2X 01F
System:-
Optical design
Magnification factor:2x
Maximum format:35mm full frame
Mount:Interchangeable mount
Lens construction:6 elements - 5 groups
Physical characteristics
Weight:250g
Maximum diameter x Length:⌀64.5×47mm
Weather sealing:-
Fluorine coating:-

*) Sources of data: Tamron lenses. Choose a Tamron high-performance lens for your SLR camera booklet ● Tamron lens catalogue. Adaptall-2 interchangeable mount system lenses ● Tamron lenses. Super Performance SP Series. ADAPTALL-2 Series booklet (December 1980) ● Tamron SP Series LD lenses booklet.

Manufacturer description #1

Doubles The Focal Length and The Magnification Ratio Whilst Retaining The High Quality of The Original Lens

The SP 2X flat-field tele-converter consisting of 6 elements in 5 groups and custom matched to Tamron's telephoto and most zoom lenses breaks through the traditional concept of tele-converters and multipliers.

Key features:

Outstanding Performance

The special optical configuration enables curvature of field to be reduced to the absolute minimum. Circumferrential light loss is also reduced and the high quality of the original lens is maintained.

Compatible with Large Aperture Fast Lenses

A large aperture fast lens can be used at its maximum aperture without introducing fall-off.

Doubles The Focal Length

and the magnification ratio broadening your photographic horizons. The maximum magnification ratio of the original lens can be doubled while retaining the long working distance.

Greater Depth of Field

The combination of the SP tele-converter and a Tamron lens having a minimum aperture of f/32 gives increased depth of field equivalent to f/64 for added sharpness.

Couples with All Lenses from F/2.5 to F/32

The effective aperture in use from F/5 to F/64 is indicated on the tele-converter.

Manufacturer description #2

The SP flat-field 2X tele-converter is a superior performance 5-groups 6-element converter specially designed for use with Tamron SP/Adaptall-2 zoom and telephoto lenses with a focal length of over 90mm. Each mount in the Adaptall/Adaptall-2 Interchangeable Mount System provides full meter coupling and faithfully reproduces all the functions of the lens and tele-converter combination.

Note: The SP Flat-Field 2X tele-converter is compatible with all Adaptall-2 mounts but is not suitable for use with Tamron wide-angle lenses or Adaptall Canon FD, Konica AR, Topcon RE, Minolta SRT, early Nikon AI and Minolta Super/X mounts.

Manufacturer description #3

This Tamron Tele-Converter doubles the focal length and macro magnification ratio while retaining the high performance characteristics of the lens with which you use it. Complete coupling is provided, even with the newest AE cameras; and large, fast F-stop lenses can be used in confidence at even their widest apertures. When you combine it with the Tamron SP 500mm F/8, for example, you have an astonishing ultra-telephoto 1000mm lens with a length of only 134mm (5.3")! This Tele-Converter may be used in conjunction with all Tamron fixed focal length lenses of 90mm or longer and with all Tamron zoom lenses except the SP 24-48mm, 28-50mm, SP 28-80mm and 35-70mm.

From the editor

This 2X converter, compatible with most Adaptall-2 mount lenses, provides very good optical performance. The 6 element, 5 group optical design is housed in a moderately long barrel which is about twice the length of conventional 4 element 2X converters. The flat field optical design minimizes off-axis aberrations; spherical and chromatic aberrations are also extraordinarily well controlled. Tamron's literature states that this converter is designed for lenses with a focal length of 90mm and longer. Nevertheless this converter performs well with all Tamron zoom lenses which have a stationary master group (the rearmost group of lens elements). This converter can also be used with many Tamron wide to tele zoom lenses for doubling macro magnification, and usually results in better off-axis macro performance.

Weight and dimensions are indicated for the Nikon F mount.

Compatible lenses (40)

Tamron SP 28-135mm F/4-4.5 28A [Adaptall-2] ⌀67Push/pull 1983 
Tamron 28-200mm F/3.8-5.6 Aspherical 71A [Adaptall-2] ⌀72 1994 
Tamron SP 35-80mm F/2.8-3.8 01A [Adaptall-2] ⌀62 1979 
Tamron 35-80mm F/2.8-3.5 QZ-35M [Adaptall] ⌀62Push/pull 1978 
Tamron SP 35-105mm F/2.8 Aspherical 65A [Adaptall-2] ⌀67Push/pull 1991 
Tamron 35-135mm F/3.5-4.5 40A [Adaptall-2] ⌀58Push/pull 1985 
Tamron SP 35-210mm F/3.5-4.2 26A [Adaptall-2] ⌀67Push/pull 1983 
Tamron SP 60-300mm F/3.8-5.4 23A [Adaptall-2] ⌀62Push/pull 1983 
Tamron 70-150mm F/3.5 CZ-150 [Adaptall] ⌀52 1976 
Tamron 70-150mm F/3.5 QZ-150M [Adaptall] ⌀52 1978 
Tamron 70-210mm F/4-5.6 158A [Adaptall-2] ⌀52Push/pull 1991 
Tamron SP 70-210mm F/3.5-4 52A [Adaptall-2] ⌀58 1979 
Tamron SP 70-210mm F/3.5 19AH [Adaptall-2] ⌀62Push/pull 1984 
Tamron 70-350mm F/4.5 CZ-735 [Adaptall] ⌀82 1976 
Tamron SP 80-200mm F/2.8 30A [Adaptall-2] ⌀77Push/pull 1985 
Tamron 80-210mm F/3.8-4 103A [Adaptall-2] ⌀58Push/pull 1981 
Tamron 80-250mm F/3.8-4.5 CZ-825 [Adaptall] ⌀62 1976 
Tamron 80-250mm F/3.8-4.5 QZ-250M [Adaptall] ⌀62 1978 
Tamron 85-210mm F/4.5 Z-210 [Adaptall] ⌀55 1973 
Tamron 85-210mm F/4.5 CZ-210M [Adaptall] ⌀55 1976 
Tamron 85-210mm F/4.5 QZ-210M [Adaptall] ⌀55 1978 
Tamron SP 90mm F/2.8 Macro 72B [Adaptall-2] ⌀551:1 @ CFD 0.29mPro 1996 
Tamron SP 90mm F/2.5 Macro 52B [Adaptall-2] ⌀491:2 @ CFD 0.39mPro 1979 
Tamron SP 90mm F/2.5 Macro 52BB [Adaptall-2] ⌀551:2 @ CFD 0.39mPro 1984 
Tamron 105mm F/2.5 CT-105 [Adaptall] ⌀52 1976 
Tamron 135mm F/2.8 CT-135 [Adaptall] ⌀55 1976 
Tamron SP 180mm F/2.5 LD [IF] 63B “35th Anniversary” [Adaptall-2] ⌀77 1988 
Tamron 200mm F/3.5 CT-200 [Adaptall] ⌀62 1976 
Tamron 200-500mm F/6.9 Z-500 [Adaptall] ⌀82 1973 
Tamron 200-500mm F/6.9 CZ-500 [Adaptall] ⌀82 1976 
Tamron SP 200-500mm F/5.6 31A [Adaptall-2] ⌀95 1984 
Tamron 300mm F/5.6 CT-300 [Adaptall] ⌀58Pro 1976 
Tamron SP 300mm F/5.6 54B [Adaptall-2] ⌀58Pro 1979 
Tamron SP 300mm F/2.8 LD 107B [Adaptall-2] ⌀112Pro 1983 
Tamron SP 300mm F/2.8 LD [IF] 60B [Adaptall-2] ⌀112Pro 1984 
Tamron SP 300mm F/2.8 LD [IF] 360B [Adaptall-2] ⌀112Pro 1993 
Tamron SP 350mm F/5.6 06B [Adaptall-2] ⌀82 1981 
Tamron SP 400mm F/4 LD [IF] 65B [Adaptall-2] ⌀112Pro 1988 
Tamron SP 500mm F/8 55B [Adaptall-2] ⌀82 1979 
Tamron SP 500mm F/8 55BB [Adaptall-2] ⌀82 1983 
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35mm full frame

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

Travellers' choice

Note

Among autofocus lenses designed for 35mm full-frame mirrorless cameras only. Speed of standard and telephoto lenses is taken into account.

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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

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),

where:

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

Mount

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.

Speed

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.

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.

Electromagnetic diaphragm control system

Provides highly accurate diaphragm control and stable auto exposure performance during continuous shooting.

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/ 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.

Weight

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.

Filters

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

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.