Review 2 of 6
Price Paid:
$150.00
from B&H Summary: Since this is the only teleconvertor I've used, I have no basis for comparison against others. Only used in conjunction with my Sigma 400mm f5.6 lens. This lens is quite sharp and contrasty by itself, but with the 1.4x teleconvertor, sharpness and contrast is noticably degraded. I was prepared to lose about 10% off the sharpness and contrast of the 400mm lens, but actual results seem to indicate greater than 10% loss. Either that or I notice shapness and contrast loss much more than others. Doesn't autofocus with the 400mm lens, but that was taken into consideration when purchasing. There is a too much play in the physical and mechanical connection between the lens, teleconvertor, and camera body, requiring me to be carefull when flexing or panning the combo when mounted on a tripod. Maybe I just got one where quality control slipped up. Only use now as a last resort when getting any shot is better than getting no shot. Strengths: Build quality
Price Weaknesses: Unacceptable loss of sharpness and contrast when used with my Sigma 400mm lens
Too much play in the connections when mounted Similar Products Used: None Customer Service: N/A
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