Buy a Kenko pro 1.4x tc the optical quality is just as good & a lot cheaper than Canon.
Steve.
I have also read that somewhere fairly recently but I cannot remember which body was used.I have been reading that the Kenko 1.4x Pro 300 will not AF on an EF 300mm f/4 IS lens.
I have both the Canon 1.4 tc and the Kenko Pro 1.4 and IMO there is not a lot in it as far as IQ is concerned.My thread is very simliar to this one but I'll just say this, if you can afford a Canon then I would go for that, after all it is the best quality. If money doesn't permit (it's only £50 or so less though) then the Kenko.
Good luck Sven. :t:
Jaff
Hi!
I'm thinking about buying a 1.4x converter for my 300mm lens. Which would u guys (or girls of course) buy, and more importantly, why?
There are so many brands that produce a 1.4x TC.
My feeling says, buy the original Canon...
Thanks for the advice!
greetings Sven
The 40D + 1.4 tc is going to work perfectly well with a f4 or faster lens - it is when you use a f5.6 lens and a taped tc that the centre focus point becomes almost worthless.I haven't tried the Kenko, but I have the Canon 1.4 converter. It works perfectly with the two compatible lenses that I have, namely the 70-200mm f4 L lens, and the 300mm f4 L IS lens with my older 350D camera, and with my current 400D and 40D. In spite of what I have read,on the 300mm lens, it works perfectly with all selected single focus points including the central one, as well as with all focus points, on the 40D.