[CDKPhil]

With that adaptor you will get vignetting with the full frame sensor.

You need a wide T Mount adaptor if you don't want vignetting around the edge of you photos.

Takahashi make a good one for the Canon. I ordered one from OPT a couple of weeks ago. Fairly expensive, about $100 for the adaptor + shipping.

It works well and has eliminated the vignetting that the normal sized T Mount caused.

Here is an example of the vignetting.


Cheers

Phil