Camera autofocus malfunction with specific lenses causes missed shots and wasted time troubleshooting

Photography enthusiasts experience sudden autofocus failure with particular lenses on their DSLR cameras, forcing them to either use manual focus (reducing shot quality and speed) or spend hours diagnosing whether the problem is lens-specific, body-specific, or a compatibility issue. Current solutions require expensive professional repair, trial-and-error lens swapping, or consulting fragmented forum posts with inconsistent advice.