F/4: Interestingly, stopping down to f/4 at wide ... and moderately high though not nearly as bright at full telephoto, so the Sony RX10's processor does a good job suppressing most of it in ...
Overall, excellent performance for a relatively fast 24-600mm equivalent f/2.4-4 lens. The Sony RX10 III's electronic viewfinder and LCD monitor both showed just over 100% coverage at wide angle ...