It does not works with the Cannon EF-S lenses (white dot/APS-C), so i purchased a Cannon EF 75-300 USM.
It makes aperture narrower by 2 F-stops. In my case I had to start with F/11.
However, that is not all. Shooting at F/11 gives horrible images with lot of chromatic aberration. The images are absolutely useless even for an amateur like me..
HOWEVER, AT AROUND F/22 AND F/32, ITS RESULTS ARE USABLE.
I can say :
* Dont purchase a Cannon EF 75-300 just for using this teleconverter. Since the ...

The information given is insufficient and picture shown is misleading. As per picture shown, there is cut in centre which allows canon lens to be mounted properely but the actual product delivered to me does not have the cut to allow the canon lens (EFS).

I initiated a refund claim, but flipkart refused to take it back. Person with customer service has hope less technical knowledge. The claim is about the compatibility teleconverter lens with canon lens, and flipkart executive are talking ab...