Kenko extension tubes... "DG" or Not ?

[cmM]

Does anyone know the difference between the older extension tubes and the newer "DG" tubes except
This DG Extension tube set has upgraded "Gate-Array IC" circuitry to work better with digital SLR's and some of the digital SLR lenses*.

What does that actually mean, I don't know... it still doesn't fit the EF-s lenses(doesn't concern me anyway), but what are the actual improvements? I;ve been trying to find some info regarding this but no luck.

[Tom W]

They use better air inside the tubes. :)
j/k, of course.

One note of interest - I have a couple of Kenko tubes, and while they are very nice on a small-mid sized lens, I had them stacked on a 300 mm lens with a 2X teleconverter one time. The net result was a bit of looseness where you could wiggle the lens very slightly. It seems that there might be a little bit of play in the Kenko tubes that comes into play when stacked.

[pierrot]

http://www.thkphoto.com/products/kenko/slrc-04b.html

[ron chappel]

http://www.thkphoto.com/products/kenko/slrc-04b.html


WHAT THE????????!!!!!!!!:eek: :eek: :eek:

That link shows (and describes) the extension tubes but has pictures only possible with a teleconverter arrangement.
Someone is going to be demoted at that company,:lol: :lol: :lol: :lol: :rolleyes:

[RichardtheSane]

SOmeone at TKphoto doesn't know what extension tubes do as the example shots are not even possible with extension tubes!

[cmM]

still that doesn't give me any info as to what the difference is between the 2 versions. Probably just the name and the +$30 price tag

[ron chappel]

I think they are being honest about the imroved capabilities of the new tubes but i have doubts they make a whole lot of difference

As they say- "to work better with digital SLR's and SOME of the digital SLR lenses" (my emphasis)


...but that doesn't really help with understanding it does it:oops: