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Kenko DG Auto Extension Tube 12 for the Canon EOS AF Mount.

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Kenko : Picture 1 regular

About Kenko



Image magnification ratios and exposure factors.-(50mm standard lens)



Auto
Extention
Tube



Distance
Reading
of Master



Image
Magnification
Ratio



Field
Coverage (cm)



Distance
from Lens Front
to Subject (cm)



Exposure
Factor



12mm



Infinite-0.5m



0.24-0.35



10x15-6.9x10.3



21-16



1.5-1.8



DG Series
New DG Series have upgraded "Gated-Array" circuitry to work better with the digital SLR's and some of the the new digital only lenses. They still work the same with film SLR Cameras and lenses as well
Note: not compatible with EF-S Lenses.

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Reviewed by 1 customers

(2 of 2 customers found this review helpful)

 
5.0

Just Enough

By

I had been using a Canon 25 Extension Tube with my 85mm lens for macro shots. I needed just a little bit more magnification to bring the subjects a bit closer. The "Kenko DG Auto Extension Tube 12 for the Canon EOS AF Mount" did just what I was looking for in combination with the 25. I rarely use the auto focus function as the DOF is so short that the AF is a bit difficult. I find it much easier to use the manual focus for macro. I can use the 25 and 12 together without degradation because extension tubes have no glass. Your photo quality is only as good as your main lens. I also use the extension tubes for macro with my 400mm telephoto lens. I can stay 6 to 8 feet away from a subject and still get a nice macro.

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