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Ricoh: HD PENTAX-DA 55-300mm F4.5-6.3ED PLM WR RE is a Compact, Lightweight, Weather-Resistant 5.5X Telephoto Zoom Lens for PENTAX K-Mount DSLR Cameras: High-Speed, Quiet AF
The following video presents the new PENTAX K-70 LV-AF: LV-AF stands for Live view-Autofocus ペンタックス K-70 と HD PENTAX-DA55-300mmF4.5-6.3ED PLM WR RE を組合せ時のライブビューAFの動作速度 Google translation of the abo…