Looking for a good bang for buck extender with a focus on image quality.

[Mt Spokane Photography]

Interesting. I didn't realize Tam and Ken were the same. Especially since their rating is quite different. And while I don't quite have a 5d mkiii today... I will tomorrow or maybe next month. So that eliminates that from consideration. That's just silly that you would ever turn off AFMA, unless you were manually focusing... ugh. Thanks for the heads up... I was leaning towards the kenko.

There used to be a note on the site that they used the same optics, but it doesn't mean the chip or housing is the same. You have to compare like series as well. Since the price is the same within $20 or so, I'd just get a Kenko. Resale value will be higher, since Tamron is often thought of as a low end brand.

 

[jdramirez]

Interesting. I didn't realize Tam and Ken were the same. Especially since their rating is quite different. And while I don't quite have a 5d mkiii today... I will tomorrow or maybe next month. So that eliminates that from consideration. That's just silly that you would ever turn off AFMA, unless you were manually focusing... ugh. Thanks for the heads up... I was leaning towards the kenko.

There used to be a note on the site that they used the same optics, but it doesn't mean the chip or housing is the same. You have to compare like series as well. Since the price is the same within $20 or so, I'd just get a Kenko. Resale value will be higher, since Tamron is often thought of as a low end brand.

The kenko is now off my radar screen... so, that's the end of that. I appreciate the response though. I know Tamron is a 3rd party lens manufacturer and their resale value isn't what it is for Canon, but I was of the opinion that their reputation was on par with Sigma. I might need to rethink that.