Wow! All I can say is wow! Whether shooting birds, butterflies, and florals or on the beach capturing action sequences of surfing this lens is just beyond all expectations, especially with the extender on the Canon 5D Mark IV.
Here it is fully mounted and ready to go. FYI, the Manfroto tripod makes it even better!
The settings on the barrel took some getting used to but I found that leaving the top switch on FULL, Set to AF, Stabilizer on, and Stabilizer mode to 2 was ideal for fast moving subjects like birds and surfers.
The EF Extender 1.4XIII made for some great captures and the clarity was surprising zoomed way out to over 600mm!
Noah Schweizer, the winner of the mens pro captured at the ECSC.
I was able to capture so many hummingbird pics with this lens and the bokeh was phenomenal.
Blayr ripping backside carve at the ECSC
One of the many groms shredding.
If you’re looking for an amazing lens to capture action sports or birds in flight, this is a very good option. When it’s a bit darker you may want to bump up 1-2 stops since getting light into the barrel is an issue. I use Auto ISO so that I can maintain Aperature Priority. Usually 1/2500 or higher. Definitely very pleased with this beauty.