It mostly seems to be support for the new HD limited lenses http://www.ricoh-imaging.co.jp/english/support/digital/k3_s.html?_ga=2.110284417.548312491.1618536543-1218849029.1618536543
for K-1, K-3, K-3ii Optimized focus operation for new lenses HD PENTAX-FA 31 mm F1.8 Limited, HD PENTAX-FA 43 mm F1.9 Limited, HD PENTAX-FA 77 mm F1.8 Limited lenses and smc PENTAX-FA 31mm F1.8AL limited, smc PENTAX-FA 43mm F1.9AL limited and smc PENTAX-FA 77mm F1.8AL limited lenses. This link says the K-1 II gets new PRIME IV https://www.dailycameranews.com/2021/04/new-firmware-updates-for-pentax-k-1-ii-k-3-k-3-ii-k-70-cameras/ Pentax K-1 Mark II camera comes with a newly incorporated accelerator unit with the PRIME IV imaging engine to achieve high-speed operation and excellent noise-reduction. As a result the ISO range has also been extended up to ISO 819200. But I don’t see anything about that in the updates. -- Larry Colen [email protected] -- %(real_name)s Pentax-Discuss Mail List To unsubscribe send an email to [email protected] to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.

