PRESS RELEASE
A GXR lens mount unit featuring an APS-C size CMOS sensor
Tokyo, Japan, August 5, 2011-Ricoh Co., Ltd. (president and CEO: Shiro Kondo) today announced the development and planned September 9, 2011 release of the new product GXR MOUNT A12, a lens mount unit exclusively for the GXR interchangeable unit camera system. The body colour will be black only, and the planned monthly production volume is 3,000 units.
Introduced in December 2009, the GXR is a revolutionary interchangeable unit camera system in which lenses can be changed by mounting camera units that integrate lens, image sensor, and image processing engine into a single unit. In addition, utilizing its unique ability to accommodate interchangeable units other than camera units, the system can be expanded to include a variety of other devices.
The new GXR MOUNT A12 is a lens mount unit made especially for the GXR. Featuring an APS-C size CMOS sensor and a newly developed focal plane shutter, this unit makes it possible to mount lenses such as Leica M lenses, and it provides various types of compensation and correction functions.
＜GXR MOUNT A12 Major Specifications＞
Effective pixels:
Approximately 12.30 million
Image sensor:
23.6 mm × 15.7 mm CMOS sensor (total pixels: approx. 12.90 million pixels)
Zoom:
Digital zoom: 4.0x (3.6x for movies)
Auto resize zoom: Approx. 5.9x (VGA)
Focus Mode:
Manual focus
Shutter speed:
Photographs: 1/4000 - 180 s, bulb, time (upper and lower limits vary according to shooting and flash modes)
Maximum flash sync shutter speed: 1/180 s
Movies: 1/2000 - 1/30 s
Exposure control:
Metering: TTL metering in multi (256-segment), center-weighted, and spot metering (TTL metering with auto exposure lock)
Mode: Aperture priority AE, manual exposure
Exposure compensation: Manual (+4.0 to -4.0 EV in increments of 1/3 EV or 1/2 EV), auto bracketing (-2 EV to +2 EV in increments of 1/3 EV or 1/2 EV)
Exposure range (auto mode, center-weighted metering):
Using standard lens (F2.5): 1.2 EV to 13.2 EV
(Exposure range for auto ISO calculated using values for ISO 100.)
ISO sensitivity (standard output sensitivity):
Auto, Auto-Hi, ISO-Lo, ISO 200, ISO 250, ISO 320, ISO 400, ISO 500, ISO 640, ISO 800, ISO 1000, ISO 1250, ISO 1600, ISO 2000, ISO 2500, ISO 3200
White balance:
Auto / Multi-P AUTO / Outdoors / Cloudy / Incandescent Lamp 1 / Incandescent Lamp 2 / Fluorescent Lamp / Manual Settings / Detail; white balance bracketing
Flash:
Method: TTL, manual, external auto (external flash GF-1 function)
Flash mode: Auto, Anti Red-eye, Flash On, Flash Synchro, Manual, Flash Off
Guide number: 9.6 (ISO 200 equivalent), 6.8 (ISO 100 equivalent)
Illumination angle: 24 mm (35 mm film camera equivalent)
Firing timing: 1st/2nd curtain sync
Other: External flash GF-1 compatibility
Shooting mode:
Auto / Program Shift / Aperture Priority / Shutter Priority / Manual / Scene (Movie, Portrait, Sports, Landscape, Nightscape, Skew Correction, Miniaturize, High Contrast B&W, Soft Focus, Cross Process, Toy Camera, Electronic Shutter) / My Settings
Continuous mode:
Number of pictures shot in Continuous (Picture Size: RAW):
Noise Reduction on weak or off: 4 pictures
Noise Reduction on strong: 3 pictures
Noise Reduction on MAX: 3 pictures
Number of pictures shot in M-Cont Plus (1 set):
HI (1280 × 856): 30 pictures (24 frames/sec.)
LO (4288 × 2848): 15 pictures (2.2 frames/sec.)
Compression ratio :
FINE, NORMAL, RAW (DNG)
Image size (pixels):
Photographs:
16:9 4288×2416, 3456×1944
4:3 3776×2832, 3072×2304, 2592×1944, 2048×1536, 1280×960, 640×480
3:2 4288×2848, 3456×2304
1:1 2848×2848, 2304×2304
Movies:
1280×720, 640×480, 320×240
File size (approx.):
RAW:
16:9 NORMAL: 17,800 KB/frame, FINE: 19,515 KB/frame, VGA: 15,587 KB/frame
4:3 NORMAL: 18,387 KB/frame, FINE: 20,157 KB/frame, VGA: 16,124 KB/frame
3:2 NORMAL: 20,946 KB/frame, FINE: 22,967 KB/frame, VGA: 18,337 KB/frame
1:1 NORMAL: 13,991 KB/frame, FINE: 15,333 KB/frame, VGA: 12,273 KB/frame
L:
16:9 NORMAL: 2,222 KB/frame, FINE: 3,816 KB/frame
4:3 NORMAL: 2,315 KB/frame, FINE: 3,960 KB/frame
3:2 NORMAL: 2,615 KB/frame, FINE: 4,493 KB/frame
1:1 NORMAL: 1,761 KB/frame, FINE: 3,009 KB/frame
M:
16:9 NORMAL: 1,475 KB/frame, FINE: 2,509 KB/frame
4:3 NORMAL: 1,574 KB/frame, FINE: 2,662 KB/frame
3:2 NORMAL: 1,744 KB/frame, FINE: 2,968 KB/frame
1:1 NORMAL: 1,186 KB/frame, FINE: 2,003 KB/frame
5M:
4:3 FINE: 2,287 KB/frame
3M:
4:3 FINE: 1,474 KB/frame
1M:
4:3 FINE: 812 KB/frame
VGA:
4:3 FINE: 197 KB/frame
Battery life:
Based on CIPA standard DB-90: approx. 330 shots*3
Dimensions (W × H × D):
Lens mount unit only: 79.1 mm × 60.9 mm × 40.5 mm
(according to CIPA guidelines)
When mounted on the GXR body: 120.0 mm × 70.2 mm × 45.7 mm
（according to CIPA guidelines）
Flange back: 27.8 mm
Weight (approx.):
Lens mount unit only： Approx. 170 g
When mounted on camera body: Approx. 370 g （battery and SD memory card included）
Operating temperature:
0 °C to 40 °C
Operating humidity:
90% or less
Storage temperature:
-20 °C to 60 °C
