Two weeks out from heading out west on our National Park vacation.  Decided to pull the trigger on the Canon RF 2X Teleconverter to complete the last missing piece of the big glass.

The following three test photos were shot at 50 yards, as measured with my golf laser range finder.  My teddy bear model is the same size as an Great Horned Owl or a small Bear’s head.  The rule of thumb in the national parks is NO closer than 50 yards from the wildlife.

Canon R5MK2 + Canon RF600 f4 = 600mm f4

Canon R5MK2 + Canon RF600 f4 + Canon RF 1.4 Teleconverter = 840mm f5.6

Canon R5MK2 + Canon RF600 f4 + Canon RF 2X Teleconverter = 1200mm f8

Doesn’t look like I’ll be giving up much sharpness withe either TC is there is adequate lighting.  

Here is an old review were I used the same teddy bear model: https://kentjarrett.com/2015/01/15/focussharpness/

Enjoy the photos and what you read? Please subscribe to be notified of future posts via email by either clicking the Follow button at the bottom or the Subscribe section on the right.

Life is good and I am blessed!

Kent