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Fifteen millimetres — the only dimension on this shelf

OM SYSTEM 1.4×, 15 mm of housing height

Fifteen millimetres thick, sealed on a metal bayonet, 1.4× for M.Zuiko PRO telephotos — the only converter on this shelf that publishes how much it adds.

OM System MC-14 teleconverter showing its slim housing and metal bayonet

OM SYSTEM 1.4×, 15 mm of housing height

Fifteen millimetres thick, sealed on a metal bayonet, 1.4× for M.Zuiko PRO telephotos — the only converter on this shelf that publishes how much it adds.

Magnification
1.4×, in the first bullet, named for sport, nature and wildlife photography. The intro above gives the cost of a 1.4× as one stop; the page does not repeat it
Lenses named as compatible
In the TITLE only — the M.Zuiko ED 40-150 mm and 300 mm PRO — and in none of the five bullets, which say merely "your compatible lenses". The intro above explains why the list matters more than the mount: a converter protrudes, and an unlisted lens can meet it with its rear element
Light loss in stops
Not published. Only the 169 € Viltrox on this shelf states the figure, and it states two stops for a 2×. A 1.4× costs one, by the arithmetic in the intro above, and this page leaves the reader to apply it
Autofocus limits stated
No limit, and a claim: the fifth bullet promises fast autofocus and stable handheld telephoto shots, with clear images at longer shutter speeds without a tripod. The buying advice on this shelf asks for the minimum aperture the body’s autofocus is specified to, and no page here supplies it
Added length
PUBLISHED: 15 mm of housing height, in the third bullet, described as particularly slim and said to fit in any camera bag. It is the only dimension published anywhere on this shelf, and it is the figure that decides whether the converter lives in the bag or gets left at home
Sealing
Dust- and splash-protected with a high-grade METAL BAYONET, in the second bullet, named for use in any weather and for travel in the open. The intro above asks whether sealing carries across the joint, and a sealed converter between a sealed lens and a sealed body is what keeps the chain intact
Published weight
Not published, as on all six converters here — on the one page that publishes a thickness
Amazon reference
B0FS25M28G (same reference on 6 Amazon marketplaces)
EAN
4545350054458
  • Fifteen millimetres of housing height, the only dimension published on this shelf
  • Dust and splash protection on a metal bayonet, so the sealed chain is not broken
  • The compatible lenses appear in the title and in none of the bullets

Best for: An M.Zuiko PRO telephoto used outdoors in bad weather, where 15 mm in the bag and a sealed joint both matter.

≈ $222 / £228 / 278 €
Check price on Amazon

Specifications

Magnification
1.4×, in the first bullet, named for sport, nature and wildlife photography. The intro above gives the cost of a 1.4× as one stop; the page does not repeat it
Lenses named as compatible
In the TITLE only — the M.Zuiko ED 40-150 mm and 300 mm PRO — and in none of the five bullets, which say merely "your compatible lenses". The intro above explains why the list matters more than the mount: a converter protrudes, and an unlisted lens can meet it with its rear element
Light loss in stops
Not published. Only the 169 € Viltrox on this shelf states the figure, and it states two stops for a 2×. A 1.4× costs one, by the arithmetic in the intro above, and this page leaves the reader to apply it
Autofocus limits stated
No limit, and a claim: the fifth bullet promises fast autofocus and stable handheld telephoto shots, with clear images at longer shutter speeds without a tripod. The buying advice on this shelf asks for the minimum aperture the body’s autofocus is specified to, and no page here supplies it
Added length
PUBLISHED: 15 mm of housing height, in the third bullet, described as particularly slim and said to fit in any camera bag. It is the only dimension published anywhere on this shelf, and it is the figure that decides whether the converter lives in the bag or gets left at home
Sealing
Dust- and splash-protected with a high-grade METAL BAYONET, in the second bullet, named for use in any weather and for travel in the open. The intro above asks whether sealing carries across the joint, and a sealed converter between a sealed lens and a sealed body is what keeps the chain intact
Published weight
Not published, as on all six converters here — on the one page that publishes a thickness
Amazon reference
B0FS25M28G (same reference on 6 Amazon marketplaces)
EAN
4545350054458

On the listing

Five bullets. Maximum reach, extending the focal length of compatible lenses by 1.4× and named for sport, nature and wildlife with sharp image quality; a robust design, dust- and splash-protected with a high-grade metal bayonet for any weather and for travel outdoors; compact and light, particularly slim at only 15 mm of housing height and said to fit in any camera bag; excellent image quality from multi-coated elements, with brilliant sharp images and detail to the edge of the frame even in difficult light; and easy handling, with fast autofocus and stable handheld telephoto shots giving clear images at longer shutter speeds without a tripod.

Fifteen millimetres, published

The only dimension anywhere on this shelf. Five other converters describe themselves as compact and leave it there. A figure the depth of a lens cap is a figure that decides whether the thing travels.

A metal bayonet, sealed

The intro above asks whether sealing survives the joint. A sealed lens and a sealed body with an unsealed converter between them is a sealed system with a hole in it.

The lens list, in the title

Two M.Zuiko PRO telephotos are named above the specification and in none of the five bullets, which say only “your compatible lenses”.

One stop, by the shelf’s arithmetic and not by the page

A 1.4× takes one stop. The 169 € Viltrox publishes its two; this page publishes none, and the figure still applies.

Availability

Between 278 € and 349 € on the German, French, Italian and Spanish Amazon stores when this page was last checked.

The American and British Amazon stores carry it too, priced in local currency. Those amounts are deliberately absent from the range above, which reads euro stores only.

Everything in this section is the figure Keepa carried on the day of the last update to this page. Availability and prices shift without notice.

Prices quoted in this text were read on 13 September 2026. The live price is at the top of the page.

More teleconverters

  • Sigma TC-2001 2× teleconverter with its Canon EF mount

    Sigma 2×, SLD glass, sealed — no lens list

    Three hundred and forty-nine euros for a sealed 2× converter with Special Low Dispersion glass — and five bullets that name no lens, no stop and no gram.

    Magnification
    2.0×, in the second bullet. A 300 mm becomes a 600 mm, and the maximum aperture moves two stops with it
    Lenses named as compatible
    NONE — and on a 2× converter that is the gap that matters most. The title gives the Canon EF mount and the five bullets give nothing: no list, no range, not even a phrase like "L-series above 135 mm". The intro above is explicit that makers publish a list rather than a mount specification because a converter protrudes, and that fitting one to an unlisted lens can mean contact with the rear element. The 169 € Viltrox on this shelf names five lenses and puts "only" in front of them
    Light loss in stops
    Not published. Two stops, by the arithmetic the intro above gives for every 2×: an f/2.8 lens works at f/5.6, an f/4 at f/8. The page does not mention it, and at 349 € that is a considerable omission
    Autofocus limits stated
    Autofocus is not mentioned at all, in any bullet — neither claimed nor qualified. On a 2× that turns f/4 into f/8 this is the specification a buyer most needs, and the page is silent
    Added length
    Not published. The fifth bullet says compact and light and gives no millimetres, where the 323 € OM SYSTEM publishes 15 mm
    Sealing
    Dust- and splash-protected, in the fourth bullet. One of three converters on this shelf to claim it
    Published weight
    Not published — on a bullet that calls it light. As on all six converters here
    Amazon reference
    B00NIHBM9U (same reference on 6 Amazon marketplaces)
    EAN
    0085126870546
    • Special Low Dispersion elements, named as a material rather than as a coating
    • Dust and splash protection, at the price level where this shelf starts claiming it
    • Not one compatible lens named, in five bullets, on a converter that protrudes

    Best for: A buyer who has already confirmed elsewhere that their lens accepts this converter, and who wants Special Low Dispersion glass in the joint.

    ≈ $369 / £330 / 349 €
    Check price on Amazon
  • Viltrox C-AF 2X II teleconverter with its aperture lever and USB port

    VILTROX 2× for Canon EF, exposure factor about 4

    A 2× converter for Canon EF that publishes both things this shelf asks for and rarely gets: the light it costs — two stops — and the five lenses it fits.

    Magnification
    2×, in the first bullet, doubling the focal length of Canon EF lenses. A 100-400 mm becomes a 200-800 mm, which is the reason anybody buys one
    Lenses named as compatible
    PUBLISHED, and published as a limit: the second bullet says it is compatible ONLY with L-series fixed focal lengths of 135 mm and above, plus the EF 70-200 mm f/2.8L, the f/2.8L IS, the f/4L and the EF 100-400 mm f/4.5-5.6L. The intro above explains why the list is the gate rather than the mount: a converter protrudes, and fitting one to an unlisted lens can mean contact with the rear element
    Light loss in stops
    PUBLISHED — an exposure factor of about 4, which the first bullet itself translates as the equivalent of 2 apertures. It is the only page on this shelf to state the cost, and it matches the arithmetic the intro above gives for every 2×: an f/2.8 lens behind it works at f/5.6, an f/4 at f/8
    Autofocus limits stated
    Autofocus is claimed — the third bullet says the lens autofocus function is supported, with improved performance, fast focusing and reliable subject tracking — and NO minimum aperture is stated. The buying advice on this shelf asks for exactly that figure, because an f/4 lens becomes f/8 here and some bodies stop focusing there
    Added length
    Not published. Seven elements in four groups is the optical construction, given twice; how much further forward the lens sits is not
    Sealing
    Not claimed. The 323 € OM SYSTEM, the 349 € Sigma and the 479 € Canon on this shelf all claim dust and splash protection; this one claims coatings against ghosting and flare instead
    Published weight
    Not published, as on all six converters here
    Amazon reference
    B08GC59HV2 (same reference on 6 Amazon marketplaces)
    EAN
    0086291917067
    • Two stops of light loss published, and translated into apertures on the page itself
    • Five lenses named, with the word "only" in front of the list
    • No minimum aperture for autofocus, on a converter that turns f/4 into f/8

    Best for: One of the five Canon EF telephotos named on the page, when 400 mm has to become 800 and two stops can be spared.

    ≈ $115 / £133 / 169 €
    Check price on Amazon
  • Canon Extender RF 1.4x in light grey with its two caps and pouch

    Canon 1.4× for RF, three-layer combination lens

    Four hundred and seventy-nine euros for a 1.4× extender sealed against dust, splashes and heat, with a three-layer combination lens — and six bullets that name no lens.

    Magnification
    1.4×, in the first bullet, named for press, nature and sports photographers. One stop, by the arithmetic in the intro above — which this page does not state
    Lenses named as compatible
    NONE. Six bullets, and the compatibility statement is that the lens design is optimised for the RF mount. The intro above insists that a converter is sold with an explicit list precisely because it protrudes, and the 169 € Viltrox on this shelf names five lenses with the word "only". At 479 €, this is the most expensive silence on the shelf
    Light loss in stops
    Not published. One stop for a 1.4×: an f/2.8 lens works at f/4, an f/4 at f/5.6. The page never mentions it
    Autofocus limits stated
    Not stated, and autofocus is not mentioned in any of the six bullets — on a device sold to press and sports photographers, for whom focus is the whole purchase
    Added length
    Not published, where the 323 € OM SYSTEM publishes 15 mm
    Sealing
    The fullest claim on this shelf: dust and splash protection AND a heat-repellent coating, in the third bullet, described as ready for extreme situations. Heat resistance appears on no other page here, and it belongs to a converter that will sit on a white telephoto in the sun
    Published weight
    Not published, as on all six converters here
    Amazon reference
    B08CNFXJR9 (same reference on 6 Amazon marketplaces)
    EAN
    4549292168044
    • Dust and splash protection plus a heat-repellent coating, the only heat claim on this shelf
    • A three-layer combination lens and high-refractive low-dispersion glass, both named
    • Not one compatible RF lens named, in six bullets, at 479 €

    Best for: An RF telephoto already confirmed to accept it, used in heat and weather where the sealing and the coating earn their price.

    ≈ $553 / £519 / 479 €
    Check price on Amazon

Elsewhere in the camera bag

  • Hama 49 mm UV filter in its black metal frame beside its plastic box

    Hama 49 mm, one coating layer per side, 3.4 mm frame

    Eight euros for a 49 mm colour-neutral UV filter with one coating per side, a 3.4 mm metal frame and a box — and a front thread that still takes a hood or a cap.

    Thread size
    49 mm, in the title — the smallest on this shelf, where the three others are 67 mm. Forty-nine millimetres is the thread of small primes and older kit lenses, and the buying advice above prefers the largest thread in the bag with step rings below it. This is the filter bought for one small lens
    Glass
    Optical glass in a black metal frame, in the third bullet, described as colour-neutral. No glass origin is named, where the 11 € K&F and the 13 € PROfezzion both claim Japanese optical glass
    Coating description
    COUNTED, and precisely: one coating layer on EACH SIDE — a two-fold coating, as the title has it. That is the lowest count on this shelf, against twelve layers on the PROfezzion and eighteen on the K&F, and it is stated plainly rather than dressed up
    Frame thickness
    3.4 mm, in the fifth bullet, described as a flat mount. Only two pages on this shelf publish a frame figure; the PROfezzion is 3 mm and the two others publish none. Thickness is what decides whether a wide lens sees the ring
    Material
    A black metal frame around a glass lens, in the third bullet. Black inside the frame is what stops light bouncing between filter and lens, and the colour is worth the mention
    Front thread provision
    YES, and it is the only page here that spells out what the front thread is for: the fourth bullet says further filters, a lens hood or a lens cap screw straight on. A filter without a front thread ends the stack; this one does not
    Stated transmission figure
    NOT PUBLISHED. The 13 € PROfezzion is the only filter on this shelf to give one, at 99.5 per cent minimum. With one coating layer per side, the loss here will be larger, and the page does not say by how much
    Amazon reference
    B00006JEAY (same reference on 6 Amazon marketplaces)
    EAN
    4007249700490
    • A published 3.4 mm frame and a counted coating — one layer per side
    • A front thread stated to take another filter, a hood or a cap
    • One coating layer per side, against twelve and eighteen elsewhere on this shelf

    Best for: A small 49 mm prime or an older kit lens that needs a lid over the front element, where a hood or a second filter still has to go on top.

    ≈ £7 / 8 €
    Check price on Amazon
  • K&F Concept 67 mm UV filter with its green-tinted coating catching the light

    K&F CONCEPT 67 mm, Japanese glass, 18 nano layers

    Eighteen layers of nano coating on Japanese glass for 11 €, with a claim to cut chromatic aberration — and a sales-rank citation where a seventh specification would go.

    Thread size
    67 mm, in the title, and the fifth bullet says it suits all lenses with a 67 mm thread, naming Canon, Nikon, Sony, Samsung and Fuji
    Glass
    JAPANESE OPTICAL GLASS, in the second bullet, credited with first-class light transmission, improved optical clarity and colour fidelity. The same claim the 13 € PROfezzion on this shelf makes; the 9 € Amazon Basics names no glass at all
    Coating description
    EIGHTEEN LAYERS of green anti-reflective nano coating, in the third bullet — the highest count on this shelf, against twelve on the PROfezzion and two on the Hama. The same bullet claims the coating blocks ultraviolet light, raises contrast and eliminates light haze at sea or in high mountains
    Frame thickness
    NOT PUBLISHED as a figure: the fourth bullet calls it an extremely thin filter and leaves it there. The 8 € Hama publishes 3.4 mm and the 13 € PROfezzion 3 mm, so the one page here claiming thinness is the one that does not measure it
    Material
    Not named for the frame. The glass is specified and the ring is not
    Front thread provision
    Not mentioned
    Stated transmission figure
    NOT PUBLISHED — which is the odd gap on a page that counts eighteen coating layers. Layers exist to raise transmission, and the 13 € PROfezzion publishes the resulting figure at 99.5 per cent minimum
    Amazon reference
    B0C1YZBPRK (same reference on 6 Amazon marketplaces)
    EAN
    6942052514675
    • Eighteen nano layers on named Japanese optical glass, for 11 €
    • A stated effect on chromatic aberration, which no other filter here claims
    • Calls itself extremely thin and publishes no thickness

    Best for: A 67 mm standard zoom used in bright coastal or mountain light, where haze and reflections matter more than the gap to the 9 € Amazon Basics.

    ≈ $11 / £11 / 11 €
    Check price on Amazon
  • PROfezzion 67 mm UV filter in its slim aluminium frame beside its padded case

    PROfezzion 67 mm, 99.5 per cent transmission, 0.7 mm glass

    The only filter on this shelf that publishes what it passes — 99.5 per cent on twelve layers, through 0.7 mm of glass in a 3 mm frame, for 13 €.

    Thread size
    67 mm, in the title, which also names Canon R6 Mark III, II, 90D, 80D and 70D bodies. Naming bodies on a filter is loose — a filter fits a thread, not a camera — but it tells a buyer the size is the common one for those kits
    Glass
    Japanese optical glass, finely ground and polished, in the third bullet, with a hardness given as up to 9HD. The hardness notation is unusual and unexplained on the page; what it is reaching for is scratch resistance on the surface that gets wiped most
    Coating description
    TWELVE layers, multi-coated, in the second bullet, to prevent internal ghosting and reflections. Fewer than the eighteen claimed by the 11 € K&F here — and unlike that page, this one publishes the result the layers produce
    Frame thickness
    BOTH figures published, and this is the page that measures itself: the GLASS is 0.7 mm thick and the FRAME only 3 mm, in the fourth bullet, stated as minimising the likelihood of vignetting. Three millimetres is the thinnest frame on this shelf, against 3.4 mm on the Hama and nothing at all from the two others
    Material
    An aviation-grade aluminium alloy frame, in the third bullet — the only frame alloy named on this shelf
    Front thread provision
    Not mentioned, which on a 3 mm frame is worth noting: the thinner the ring, the less room for a front thread, and the page does not say whether a cap or hood still screws on
    Stated transmission figure
    PUBLISHED — an average light transmission of AT LEAST 99.5 PER CENT, in the second bullet, and the only such figure on this shelf. It is the number that makes the coating count meaningful: twelve layers passing 99.5 per cent is a measurable claim, where eighteen layers and no percentage is an assertion
    Amazon reference
    B09366T36S (same reference on 6 Amazon marketplaces)
    EAN
    6940202350425
    • Ninety-nine point five per cent transmission published — alone on this shelf
    • Both thicknesses published: 0.7 mm of glass in a 3 mm frame, the thinnest here
    • No front thread provision mentioned, on the thinnest frame here

    Best for: A 67 mm lens used at its widest, where a 3 mm frame and a measured transmission are worth 4 € over the cheapest lid on this shelf.

    ≈ $13 / £11 / 12 €
    Check price on Amazon

All teleconverters