Tamron 150-600mm f/6.3

[Kayaker72]

Bryan has posted his IQ tests.

vs the 100-400L at:

• 400 mm f/5.6
• 400 mm f/8
• 500 mm f/8 vs 560 mm f/8
• 500 mm f/11 vs 560 mm f/11
• 600 mm f/8 vs 560 mm f/8
• 600 mm f/11 vs 600 mm f/11

And...just for fun:

• 200 mm f/5.6

I have the Tamron close to or beating the Canon in each comparison. This could be a great lens to photograph loons from a kayak....