This continues from my Picture of the Day - "Wings Up!": The other day I was able to test out the Sigma TC-1401 1.4x Teleconverter connected to the Sigma 150-600mm F5-6.3 Contemporary lens. For the testing, I was photographing some Rock Pigeons and Ring-billed Gulls (coming in next post). With the teleconverter attached, it turned the f6.3 to an f9 which normally f8 is the limit for auto focus on my 2 cameras. However, the camera was able to have all auto focus points enabled and focus on the flying pigeons.
One thing I was interested in seeing was if the auto focus system would slow down with the teleconverter on. I was pleased to find that I didn't notice any significant slow down with the teleconverter attached. In fact, there was no difference with or without it on. The lens was able to capture these pigeons coming in from all directions and catch them coming towards me and landing, etc pretty decently. I had it limited to a focal distance which helped speed up the focus.
I normally don't photograph a lot of pigeons, but I do like these photos and they are going to be added to my archive :)
Taken with Canon 5D Mark IV & Sigma 150-600mm f/5-6.3 DG OS HSM Contemporary + Sigma TC-1401 1.4x Teleconverter.
Feel free to share 🙂 Stay tuned for Part 2 :)