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KENKO Teleplus Pro 300 converters are made with high quality multicoated optical glass supplied by Hoya corporation, the worlds largest manufacturer of optical glass. This glass will match the optical quality of the prime lens (even at the edges, unlike many teleconverters on the market today). The optical design of the elements and light path is wide enough not to cause any Vignetting.They are designed specifically to be use with telephoto lenses of 100mm or above, and work best with telephoto lenses of 200mm to 500mm. The PRO 300's can be used with telephoto Zoom lenses as well as prime lenses, but, due to their design, Kenko does not recommend them for lenses that have a zoom range that starts under 50 mm.Kenko PRO 300 converters are intended to be used with expensive telephoto lenses and larger camera bodies. They have all metal lens mounts in both front and rear, as well as a metal core, to support today's heavy professional camera bodies.Kenko PRO 300 AF teleconverter will not auto focus with the following lenses: Canon EF 50mm f/2.5 Macro, Canon EF 100mm f/2.8 Macro, Canon EF 85mm f/1.8 USM, Canon EF 300mm f/4 IS USM. NOT compatible with the new Canon EF-S lenses, 18-55 f/3.5-5.6, 17-85 f/4-5.6, 60 f/2.8 macro DG Series New DG Series have upgraded "Gated-Array" circuitry to work better with the digital SLR's and some of the the new digital only lenses. They still work the same with film SLR Cameras and lenses as well
And now to tell whether the teleconveter does allow you to see more detail, i've resized all the 200mm pictures by 1.4x using photoshop (using bicubic setting) and the result pictures are below: (again click on the picture to see the 1:1 pictures)
Resized with ps------------------with converter
Για το παραπάνω τεστ χρησιμοποιήθηκαν :
70-200 f/2.8 VR lens @ 200mm with VR off.
Manfrotto 055 MF3 tripod
RAW @ ISO100 and convert to JPEG with ZERO amount of sharpening or adjustment at all
So what do you think?
Now this is really just a quick test of the Kenko Pro300 1.4x teleconverter and is mainly focused on the pictures's center area sharpness.
From my results, I personally don't really see any drop in the picture sharpness or the picture quality when i install the Kenko teleconverter even when i look at them at 1:1 ratio. The aperture size make a much bigger difference to the sharpness then anything else.
And with the software enlarged vs teleconveter enlarged pictures, you can see the Kenko teleconverter really works quite well and is definitely a lot better than enlarging a picture by software.
- Registration date : 01/01/1970
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