Canon EF 1.4X II Extender Telephoto Accessory

Canon EF 1.4X II Extender Telephoto Accessory Attaching this high performance Extender to a 135mm or longer lens, or to the EF 70-200mm f/2.8L boosts the focal length by 1.4 times. With five elements in four lens groups, it preserves the prime lens’ image quality.
Customer Review: Nice build quality!
I just got this, but was happy to see that it is “L” build. That is, metal and matches the color/style of the 70-200mm f/2.8L IS USM.

No tests yet to comapre before/after. Does anyone know pf a good test pattern to download and print that has progressively smaller lines, like a “bull’s eye” style pattern for testing lens sharpness? I see a lot of subjective evaluations, but would liek to see some pictures at a fixed length that actually demostrate the differences.

I’ll look for something like this and update this review with pictures once I do.

Oh, and my f/2.8L is a f/4L with this thing attached.

Thanks, Canon!
Customer Review: Good Toys to play with
There no words to say then GOOD
It very help with the zoom lens.


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