SUMMARY
Steve Perry's video details 10 methods to improve image sharpness and autofocus performance when using teleconverters. He explains that teleconverters reduce light, lower contrast, degrade image quality, and strain the AF system. Perry advises using 1.4x teleconverters over 2x for action, employing a 'focus refocus' technique for static subjects in difficult conditions, and pairing teleconverters with fast prime lenses. He also recommends OEM teleconverters and considers factors like shutter speed, AF area, stopping down, burst shooting, and subject distance to mitigate atmospheric distortion.
TAKEAWAYS
Teleconverters can degrade sharpness and autofocus reliability.
Using a 1.4x teleconverter is often better for action than a 2x.
Faster prime lenses perform better with teleconverters than slower zooms.
Subject distance is crucial, as teleconverters magnify atmospheric distortion.