Designed to further enhance the essential values of the GR-series - optimizing image quality, responsiveness, and portability - the RICOH GR IV features a newly developed back-illuminated APS-C-size CMOS image sensor for higher sensitivity and reduced noise with the new GR ENGINE 7 imaging engine. The newly designed GR LENS delivers exceptional imaging performance. The lens barrel and optimized start-up sequence reduce the start-up time to approximately 0.6 seconds - the shortest in GR-series history!