Canon 70/300 L f/4-5.6 & Kenko Pro 300 1.4X TC Reikan FoCal... Several Questions

[Dave Throgmartin]

Here are my real world shots I wrote about before.

With TC




























Without TC



























With TC cropped







































Without TC cropped

































I think that in this case the picture without the TC is clearly sharper when cropped. This was using a 1.4x Sigma. Maybe the Kenko will deliver better performance?

Dave