Quick question about tamron teleconverter

[klotzishere20]

Just wondering if anyone has used this and what you think about it.
I heard it had a significant loss but I wasn't sure what lense/body they were using.

Thanks in advance


I use a T1i with a 400mm 2.8.

 

[gsgary]

Just wondering if anyone has used this and what you think about it.
I heard it had a significant loss but I wasn't sure what lense/body they were using.

Thanks in advance


I use a T1i with a 400mm 2.8.

Have a look at the Kenko 300Pro i use one on a 300F2.8L
This is with the 2X