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Photo Forum / Digital Photography / DSLR Cameras / July 2005Pro-Optic Extension Tubes?
Adorama's selling (a house brand?) set of extension tubes (for the Nikon AF) that's half the price ($85) of the Kenko DG Auto tube set ($159). Does anyone have any experience with them and how do they compare with the more expensive stuff like Nikon's own? TIA Norm > Adorama's selling (a house brand?) set of extension tubes (for the Nikon > AF) > that's half the price ($85) of the Kenko DG Auto tube set ($159). Does > anyone have any experience with them and how do they compare with the more > expensive stuff like Nikon's own? Most third-party extension tubes are passive, ie. they don't pass data from the lens to the camera body, whereas camera makers' tubes do so. The EOS Pro-optic tubes do pass signals between the body and the lens. However, there is no comparison between the Pro-optic extension tubes and the canon ef-25. The Pro-optic tubes have solid pins that extend all the way through the extension tube instead of "proper" connectors at each end. I have had lots of problems with the pro-optic tubes and only use the ef-25 at this point. Not sure how that would translate to the Nikon mount, but I'd suggest you would be a lot better off purchasing a used nikon set rather than the pro-optic ones. Dean >> Adorama's selling (a house brand?) set of extension tubes (for the Nikon >> AF) [quoted text clipped - 5 lines] > Most third-party extension tubes are passive, ie. they don't pass data > from the lens to the camera body, whereas camera makers' tubes do so. > The EOS Pro-optic tubes do pass signals between the body and the lens. > However, there is no comparison between the Pro-optic extension tubes and [quoted text clipped - 8 lines] > > Dean It was pretty clear that to get the cost that far below the mfg's set they had to take some shortcuts in construction but I had no idea what they'd done. thanks much for the info. Norm |
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