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I got a Nikon "TC-14 AF E-II" tele-extender at what I considered a bargain price, knowing what a penalty in aperture and sharpness the things will cause. Did a couple exposures, found a cheap UV filter was more detrimental to image sharpness than the converter.
Both at 1/1000 sec. & ∱8.0
Tripod, extender and cable release:
7314 no filter
7315 JJC UV
"Zoomed in" on both images.

Both at 1/1000 sec. & ∱8.0
Tripod, extender and cable release:
7314 no filter
7315 JJC UV
"Zoomed in" on both images.
