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EF 1 4X III Teleconverter Extender Review

3

·

Terrible

Revainrating 1.5 out of 5  
Rating 
1.5
👓 Lenses, 📷 Camera & Photo

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Description of EF 1 4X III Teleconverter Extender

Dedicated to select C mount lenses. Allows you to increase the effective focal length of lenses for greater reach. Permits communication between compatible lenses and camera bodies. Comprised of seven elements in three groups in order to maintain image quality. Includes 1 year limited warranty and Life-time e-mail Customer Support.

Reviews

Global ratings 3
  • 5
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  • 4
    0
  • 3
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  • 2
    1
  • 1
    2

Type of review

Revainrating 2 out of 5

Worthless Teleconverter Extender for Lenses

As my tests showed, this teleconverter extender proved to be a waste of money. The image quality was severely degraded, with significant loss of sharpness and detail. The only positive aspect was its small size, but that doesn't make up for the terrible image quality. Don't bother wasting your money on this product.

Pros
  • Small size
Cons
  • Severe image degradation

Revainrating 1 out of 5

Quality teleconverter

I like Yongnuo products and this teleconverter is no exception. It's well made and works great with both Canon 5D Mark IV and Canon 6D. I mainly use it with a Canon 300mm f/4 lens when photographing birds (mainly eagles and hawks in flight) to get a little more coverage with just an aperture loss. I am very satisfied with this product. It worked well and saved me a significant amount of money compared to buying a Canon teleconverter.

Pros
  • Composed of seven elements in three groups to ensure high image quality.
Cons
  • I don't remember, but there was something

Revainrating 1 out of 5

Good looking but not fully compatible with Canon electronics.

Crisp, clear optics, minimal XA, acceptable contrast. Build quality was decent but definitely not as solid as a Canon product. Good results on the 7D2 at 400mm f/5.6, autofocus was fast and accurate although the EXIF data was mistransmitted. Poor results at 70-200 f/2.8 IS ii, autofocus didn't work at all, totally useless - manual focus needed. and I think it was also the cause of the strange behavior of the image stabilizer. Eventually, the camera's battery drained at an incredible rate; Even…

Pros
  • Includes 1 year limited warranty and lifetime email support.
Cons
  • I don't remember