Kenko 2X Teleplus MC7 AF
(From company literature) The Kenko Teleplus MC 7 AF Teleconverter has the effect of doubling the focal length of your lens. For example, using the MC 7 AF teleconverter with a 300 mm lens will effectively increase the focal length to 600 mm.
It is an easy and inexpensive way to increase the abilities of your telephoto lens without the expense of purchasing and carrying another telephoto lens. Kenko Teleplus converters are small and easy to carry in your camera bag.
KENKO Teleplus MC7 AF converters are made with high quality multicoated optical glass supplied by Hoya Corporation, the world's largest manufacturer of optical glass.
The MC 7 AF converter has genuine Gate Array IC (Integrated Circuit). This means that the converter's unique circuitry maintains signal integrity between the camera body and lens. These converters are designed to electronically operate the same way an original manufacturer's converter would.
Full AF operation with Teleplus MC 7 AF is possible with camera lenses with open aperture of f/2.8 or brighter. Please be aware that AF will work properly only if there is enough light and contrast on the subject to activate the camera's AF sensors (manual focusing is recommended when using lenses with smaller open f-stop value than those given above).
Kenko 2X Teleplus MC7 AF
Kenko 2X Teleplus MC7 AF User Reviews
9 out of 10 points and recommended by joe88 (37 reviews)very sharp 7/5 element AF-convertervery small CA's wide open
for this low price a very good 2x converterreviewed January 30th, 2015 (purchased for $45)
nice colors, high contrast and good sharpness
I've tested it stopped down to f8-11
very small CA's even with very well corrected lenses.
similar to Tamron 2x MC 7
if you'll get very sharp tele-shootings of birds f.e. try to fit a small macro tube with achromatic lens in it (=focal reductor).
Small CA's will disappear, totally.
highly recommended - much more better than mc4
7 out of 10 points and recommended by badpickev (1 reviews)pricenot as good as the pro line up
The MC7 2X TC is the middle level TC made by Kenko. This unit is by far sharper than the MC4 and is not that far off of the PRO lineup. With a modest price increase over the MC4, this item is attractive foe the casual or amature photographer that is looking for some reach and can not afford the pro line-up.reviewed January 6th, 2008 (purchased for $132)
My copy of the MC7 works quite well on all my lenses and while i do see some sharpness loss, its not exaggerated as you get with lesser TC's. By adding a 2X to most lenses, you now need a lot of light and good contrast to make the AF work.
Over all I am pretty happy with my purchase and have used it for 4 years.
8 out of 10 points and recommended by ronen_we (7 reviews)
worked well with all my nikon lenses, no compatibility issues with autofocusing or metering.reviewed November 15th, 2006
with heavy 80-200/2.8 there is a bit of play between lens and teleconvertor, though does seem to have any influnce on optical quality.
used it quite a bit with 80-200/2.8, good pleasing results from the combination.
well worth its price