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Panasonic DMW-STC20 Lumix S 2x Teleconverter

BH #PADMWSTC20 • MFR #DMW-STC20
Panasonic DMW-STC20 Lumix S 2x Teleconverter
Key Features
  • L-Mount Teleconverter
  • 2x Magnification Factor
  • Two Ultra-High Refractive Index Elements
  • Communication between Lens and Camera
Extend the reach of select L-mount lenses with the DMW-STC20 Lumix S 2x Teleconverter from Panasonic. This teleconverter magnifies the image by 2x and retains full communication between the lens and camera body, enabling metering, autofocus, and image stabilization as well as the transmission of Exif data. Its optical design incorporates a pair of ultra-high refractive index elements, too, in order to maintain high sharpness and accurate rendering. Additionally, the teleconverter has a weather-sealed construction that reduces the chances of dust, water, or even the cold from affecting performance.
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Magnification
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2x

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Panasonic DMW-STC20 Lumix S 2x Teleconverter Overview

Extend the reach of select L-mount lenses with the DMW-STC20 Lumix S 2x Teleconverter from Panasonic. This teleconverter magnifies the image by 2x and retains full communication between the lens and camera body, enabling metering, autofocus, and image stabilization as well as the transmission of Exif data. Its optical design incorporates a pair of ultra-high refractive index elements, too, in order to maintain high sharpness and accurate rendering. Additionally, the teleconverter has a weather-sealed construction that reduces the chances of dust, water, or even the cold from affecting performance.

Compatible Lenses

Lumix S PRO 70-200mm f/4 O.I.S.
Lumix S PRO 70-200mm f/2.8 O.I.S.
UPC: 885170365568

Panasonic DMW-STC20 Lumix S 2x Teleconverter Specs

MountLeica L
Magnification2x
Optical Design8 Elements in 4 Groups
Light Loss2 Stop
Length1.64" / 41.6 mm
Diameter2.57" / 65.3 mm
Weight8.11 oz / 230 g
Packaging Info
Package Weight0.815 lb
Box Dimensions (LxWxH)4.9 x 4.05 x 4"

Panasonic DMW-STC20 Lumix S 2x Teleconverter Reviews

Excellent product.

By Dagmar
Rated 5 out of 5
Date: 2020-06-02

Really really good, very sharp

Useful, but, as expected, not as good as a longer lens

By Wayne
Rated 3 out of 5
Date: 2020-02-17

The longest lenses made for the Leica L mount are the Panasonic 70-200 and the Leica 90-280. The latter is extremely large and expensive. I have been happy with the IQ of the Panasonic 70-200 (f4) on the Leica SL2, but needed extra reach for a trip to Yellowstone. The images with the 2x were OK, but (sort of as expected) not as sharp as with the native lens, especially when cropped (see images) and shooting handheld. I took it off the lens for the last day of shooting. I will buy the Panasonic L mount super telephoto zoom when it is released, and only use the TC when I absolutely have to have the extra reach.

Excellent fit

By Juan
Rated 5 out of 5
Date: 2019-10-09

Wish have bought service contractfrom B&H

Slight loss of sharpness but GREAT teleconverter!

By Timothy
Rated 5 out of 5
Date: 2020-03-23

The build quality is excellent, this teleconverter fits securely to my Panasonic 70-200 f2.8. I can move about with confidence and am also very happy with the autofocus. I've perceived no difference in autofocus performance. There is a minor decrease in sharpness, which is to be expected in a teleconverter. The decrease in sharpness is worth the reach for video and most of the time for stills. I report most of the time because the S1 does well with cropping images. If you find yourself at 200mm cropping significantly, this teleconverter will most certainly help retain an image that fills the frame. At the time of writing this review, there is no L-Mount super telephoto lens appropriate for wildlife or sports. This teleconverter is not an ideal substitute for such a lens but works for a great many scenarios, especially video. Ultimately the 70-200 f2.8 with teleconverter is significantly more workable for me than a sigma 150-600mm f5-6.3

Very impressed

By Paul
Rated 5 out of 5
Date: 2020-03-04

Using this with the Panasonic S Pro 70-200 f/2.8 it is a great match. Designed for this combination and it shows. Sharp pictures and saves me from having to carry a 400mm while traveling for video and stills. Highly recommend.

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Is it compatible with Sigma 105mm f/2.8 DG DN ...

Is it compatible with Sigma 105mm f/2.8 DG DN Macro Art?
Asked by: Ehud
No, the Panasonic DMW-STC20 Lumix S 2x Teleconverter is not compatible with the Sigma 105mm f/2.8 DG DN Macro Art Lens for Leica L. For the Sigma lens you would need the Sigma TC-2011 2x Teleconverter for Leica L, BH #SITC2011 (https://bhpho.to/3F6JGFv).
Answered by: Yaakov
Date published: 2021-11-11

I read it only works with 70-200 mm panasonic ...

I read it only works with 70-200 mm panasonic lens but the 24-70 is the same size 80mm? Will it not work with that lens?
Asked by: Thomas
Teleconverters are typically only compatible with tele zoom lenses and not wide to medium zooms. In addition the converter will not seat into the rear of the 24-70mm lens due to the rear lens element.
Answered by: Rob
Date published: 2020-06-24

Will it fit and work on a Leica SL 90-280mm lens?

Will it fit and work on a Leica SL 90-280mm lens?
Asked by: Charles
This teleconverter is currently compatible with the Lumix S PRO 70-200mm f/4 O.I.S. only.
Answered by: Kirk
Date published: 2020-10-20

Since you loose 2 f stops, using on the Panasonic ...

Since you loose 2 f stops, using on the Panasonic Lumix 70-200 F/4 is equivalent to f/11?
Asked by: Walter
That is incorrect. When using the Panasonic DMW-STC20 Lumix S 2x Teleconverter on the Panasonic Lumix S PRO 70-200mm f/4 O.I.S. Lens, the focal length of the lens is multiplied by 2x while the maximum aperture of the lens is reduced by two (2) f-stops. As such, using the Panasonic DMW-STC20 Lumix S 2x Teleconverter on the Panasonic Lumix S PRO 70-200mm f/4 O.I.S. Lens would make the lens the equivalent of a 140-400mm f/8 lens.
Answered by: Manzell
Date published: 2021-08-05

Does this work for only Panasonic Lumix 70-200 ...

Does this work for only Panasonic Lumix 70-200 F/4 or does it work fro F/2.8 version of the same lens?
Asked by: Subh
This converter is also compatible with the 2.8 as well.
Answered by: Rob
Date published: 2021-08-05

Are there plans for other Lumix teleconverters? ...

Are there plans for other Lumix teleconverters? Specifically, I shoot with a G9 and want to expand my 100-300mm (F4) range without adding the weight of a 400mm lens.
Asked by: Zale
We haven't heard anything yet. As soon as Panasonic makes an announcement, then we'll know. You may want to check Panasonic's website from time to time.
Answered by: Rob
Date published: 2019-08-15

Will it work with the Elmarit 200mm f/2.8? I ...

Will it work with the Elmarit 200mm f/2.8? I would assume that since it is designed for the 70-200 zoom lens it would work the 200 fixed...but you know what happens when you assume anything.
Asked by: Ed
The Panasonic DMW-STC20 Lumix S 2x Teleconverter is compatible with only two lenses: Lumix S PRO 70-200mm f/4 O.I.S. Lumix S PRO 70-200mm f/2.8 O.I.S.
Answered by: Boyd
Date published: 2022-06-29

I have a Sigma 100-400mm f / 5-6.3 lens Can I use ...

I have a Sigma 100-400mm f / 5-6.3 lens Can I use it?
Asked by: Alexander
This will not work with the Sigma 100-400. You would need this one instead. https://bhpho.to/2ZisyxB
Answered by: Stephen
Date published: 2021-10-24
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