Kenko 2X review
Image cropped 100% showing 1/3 of centre resolution.
Not too bad considering its 1/2 the cost of the Canon 2X and fits almost all lenses due to its recessed elements unlike the Canon 2X. Images should be ok to print up to 6x10 being conservative.
Am not putting up the review on the 1.4X because there are already numerous out there showing its a very high quality and affordable solution to Canon's alternative.
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