Kenko teleconverters - what is DG version?

[sojourn88]

Kenko teleconverters - what is DG version?

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any idea what is DG version in a Kenko teleconverter? what is the difference between non-DG and DG? Mechanically is there any difference for fitting between the lens and body?
Personally I suspect it is about the "D" (distance) info for Nikon's 3D matrix metering, for transfering this D information from lens to the body. I also suspect that G is for the no-aperture ring lens for G-type Nikkor lens.

Correct me if i am wrong. thanks

 

[TMC]

Wrong. DG is just their denotation for their optimized digital series.

 

[lsisaxon]

Wrong. DG is just their denotation for their optimized digital series.

Is it reduced image circle or can it be used for FF?

 

[TMC]

FF and Digital

 

[lsisaxon]

FF and Digital

Thanks.