Kenko 2X Teleplus - 7 Element DG- Pentax Auto Focus Review

I've only been using this product for one day but so far I think it's wonderful. As with many amateur photographers I'm on a very tight budget when it comes to gear so I did lots and lots of research before purchasing the MC-7 (2X) teleconverter. What I found after reviewing many images (found on Google) taken with the MC-4 and the MC-7 was that the MC-7 is significantly higher quality than the MC-4 and well worth the extra money.

For the record I'm using my MC-7 on a Pentax K200D with a Tamron AF70-300mm F/4-5.6 Di LD Macro 1:2 (Model A17). With the teleconverter attached my 70-300mm f/4-5.6 becomes a 140-600mm f/8-11. One big advantage to a teleconverter is that it doubles the magnification while keeping the minimum focal distance the same. On my first use this enabled me to take a picture of a dragonfly at about 3 feet and 180mm which filled the entire frame. I've upload this image as a reference. Some detail was lost in the resizing for Amazon.com but you'll get the idea.

Bottom line...this teleconverter does an acceptable job even with a relatively slow lens. If your using a similar lens plan to use a tripod, use auto-focus but fine tune manually, and you may notice some over or under exposure from time to time. You should expect better performance from a faster f/4 or f/2.8 lens. Personally I'm holding out for the yet-to-be-released Tamron SP AF70-200mm F/2.8 Di LD (IF) Macro (Model A001), but that's a story for another time.

Pentax K200D 10.2MP Digital SLR Camera with Shake Reduction 18-55mm f/3.5-5.6 Lens
Tamron AF70-300mm F/4-5.6 Di LD Macro Lens with hood for Pentax DSLR Cameras

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