Would this work with a Zuiko 4/3 50-200mm 2.8-3.5 WITH a 4/3 to M4/3 adapter? (on a M4/3 camera)

No, this converter is designed to work with two lenses, the 40-150 pro f2,8 and the yet to be released 300 f4

its works for olympus digital 40-150?

Hello Marco, the MC-14 will work with the Olympus 40-150mm f/2.8, but not with the Olympus 40-150mm f/4-5.6. The MC-14 also works with the Olympus 300mm f/4.0.I use the MC-14 with the Olympus 40-150mm f/2.8 and am very pleased with the results. All the best.

Would this lens work with the m. zuiko ed 12-40 mm f2.8 pro lens?

No, it does not work with the 12-40mm. I have both, and this teleconverter protrudes into the lens and is only compatible with lenses with a recessed rear element. On the 12-40mm, the rear element is flush with the lens mount, and the teleconverter cannot be attached. It will work with the 40-150mm PRO and the new 300mm PRO. I've also used it with an old Nikon 300mm with an adapter, and it may work with some other lenses not acknowledged by Olympus. But be careful, you don't want to damage your lens.Note, the other replies are referring to a different teleconverter from the one shown here, made for a different mount.

Does this come with a manufacturer’s warranty?

I believe it is one year if purchased new from an authorized vendor. It can be extended four years if your purchase an extended warranty within the original warranty period. If you are in the US, I have heard that products purchased from international vendors may come with a warranty but may be difficult to enforce if a problem develops.

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OM SYSTEM Olympus MC-14 1.4X Teleconverter for The M40-150mm and 300mm f4.0 PRO Lenses (Black)

OM SYSTEM Olympus MC-14 1.4X Teleconverter for The M40-150mm and 300mm f4.0 PRO Lenses (Black)

Product ID: 10077161

Details

Brand
OM SYSTEM
Camera Lens Description
OM SYSTEM 1.4X
Compatible Mountings
Four Thirds
Focal Length Description
300 month
Lens Type
Teleconverter

💧Dust & splashproof seal

🔍1.4x focal length boost

⚙️Micro Four Thirds mount

Description

📸 Elevate your zoom game—capture moments others miss!

EXTEND YOUR REACH - Amplify your Olympus PRO lenses by 1.4x for stunning close-ups without swapping gear.
PRECISION AUTOFOCUS - Keep up with fast-moving subjects thanks to uncompromised autofocus speed.
LIGHTWEIGHT COMPACT - Add powerful zoom without the bulk—only 0.23 lbs to keep your setup agile.
SEAMLESS COMPATIBILITY - Optimized for Micro Four Thirds bodies and select Olympus lenses for effortless integration.
WEATHERPROOF CONFIDENCE - Maintain full dust and splash resistance—shoot worry-free in any environment.

The OM SYSTEM Olympus MC-14 1.4X Teleconverter enhances the focal length of Olympus M40-150mm f2.8 PRO, M300mm f4.0 PRO, and 100-400mm lenses by 1.4 times while preserving their dust and splashproof features. Compatible with Micro Four Thirds mounts, it delivers sharp autofocus and lightweight portability, making it an essential upgrade for professional-grade telephoto photography.

Specifications

ASIN	B00NGSLSOK
Best Sellers Rank	#217 in Camera Lens Adapters & Converters #400 in SLR Camera Lenses
Brand	OM SYSTEM
Built-In Media	LENS
Camera Lens	OM SYSTEM OLYMPUS MC-14 1.4X Teleconverter for the M40-150mm and 300mm f4.0 PRO Lenses (Black)
Color	Black
Compatible Camera Models	[Olympus E-5, among potentially others]
Compatible Camera Mount	Four Thirds
Customer Reviews	4.6 4.6 out of 5 stars (116)
Exposure Control Type	Automatic
Focal Length Description	300 month
Focus Type	Auto Focus
Global Trade Identification Number	00050332188792, 04545350047849
Image stabilization	Digital
Iso Range	100-25600
Item Weight	3.68 ounces
Lens	Teleconverter
Lens Coating Description	ZERO Coating
Lens Design	Zoom
Lens Fixed Focal Length	150 Millimeters
Lens Mount	Four Thirds
Light Sensitivity	100-25600
Manufacturer	Olympus
Manufacturer Part Number	V321210BU000
Maximum Aperture	4 Millimeters
Maximum Focal Length	150 Millimeters
Media Type	ProductImage
Minimum Focal Length	1 Millimeters
Model Name	zuiko
Model Number	V321210BU000
UPC	050332188792 083922912538
Unit Count	1.0 Count
Warranty Description	1 Year Manufacturer
Water Resistance Level	Water Resistant
Zoom Ratio	1.4:1

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