I recently purchased the Tamron 18-400mm F/3.5-6.3 Di II VC HLD lens for my canon.  I tested it using the SL1 and 7D that has the cropped sensor.  I was amazed with the result and it’s truly at 22.2x zoom.

https://www.flickr.com/photos/bertandmai/37659856664/in/dateposted-public/

@18mm

@35mm

 

@50mm

 

@70mm

 

@100mm

 

@200mm

 

@300mm

 

@400mm

The images above are not processed, no correction, without any filter, etc.  This is just a demonstration of the zoom capability of the lens.  All shots are handheld with only the VC turned On.