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|Package Weight||0.4 lb|
|Box Dimensions (LxWxH)||3.2 x 3.1 x 2.8"|
|Lens Elements/Groups||3 elements in 2 groups|
|Light Loss||1 stops|
|Weight||3.8 oz / 110 g|
|Dimensions||Not specified by manufacturer|
The use of a teleconverter is often a compromise that will result in reduced image quality than with a dedicated lens. This teleconverter is no exception to the rule, although it does offer a cost-effective way to gain extra telephoto reach with image quality that will be acceptable for many people.
Sometimes I have to focus my hand, and the auto focus hunts. But the image quality is really quite good and my 250 ml lens now becomes a 350, saving me the hassle of dragging around my larger lenses at least for long-distance photography or things don't move. I do recommend this model.
This basic 1.4x teleconverter lives up to expectations. I bought it to expand the reach of my Canon EF-S 55-250mm STM lens while losing only one stop in speed (it would go from f/5.6 to f/8 at 250mm) instead of 2 stops with a 2x extender.
Moving to a 5D Mk. 3, my Sigma 14-28mm Wide EF-S was going to have issues with full frame, until I read about people using the Kenko HD DGX 1.4 teleconverter. Wow, it works amazing well and I now keep it on my Sigma lens ready to go.
Works very well with my Canon 200D and both my CanonEF-S55-250mmf/4-5.6II andCanonEF 70-300mmf/4-5.6IS USM lens.
Well made, snug fit. 4.5 stops of IS on 55-250 STM lets you recover most of the stop of light lost by lower shutter speed. Good for targets that do not move a lot, or in good light. As with all contrast only AF, half press and compose is often needed (or back button focus and compose).