Kenko Teleplus PRO 300 - Converter - Canon EF

Autofocus works very inaccurate and way too slow; forget action photography ; Often ugly chromatic abberation

The pictures results are ok, but you will need to go fully manual when using it. I have a Canon 50D, I lost aperture control and auto focus functionality. A work around is to set the AP before installing the TC... take the lens off while the camera is...

While it does perform well optically on my Nikkor 180mm f/2.8 AF lens and a D300, its build quality leaves a lot to be desired....and I do mean a lot. I'm finding what I consider to be too much "play" between the body and converter and (to a lesser...

This teleconverter is not worth it at all, you'll do better with photoshop. I have a 70-300 VR AF-S lens from nikon that is, while, clearly not top of the line, a nice lens. Unfortunately, the nikon teleconverter won't work with it because the...

This works with every lens I have (5 Nikon, 1 Tokina, 1 Sigma). The ones whose rear element sticks out need an extension tube to keep from rubbing, and auto-focus is lost with some lenses, but it works. I always keep this in my bag, and often toss it...

Bought for use with Nikor D50 body and AF-S Nikor 70-300VR f4.5-5.6 and less important for an AF-S 18-200VR . All functions work well. Auto focus is quick in reasonable light ( where I didn,t need flash) and resolution was as good with the extender...

Good quality construction. Photos seem to be focused and crisp. Although the light reduction is noticeable, it is much better than a 2x teleconverter I also own, and is much easier to work with. Be prepared to manually focus on a cloudy day as a...

This teleconverter is fantastic -- I bought it for a trip to Kenya for my Nikon D200. It allows you to still use all the functionality of the camera -- auto focus, etc. The photos are crisp and clean without distortion even at the "extremes." I got...

The only 3x teleconvertor on the market, get it while you can. Does not work well with all lenses though.