The Ricoh GXR A12 is a new GXR system lens mount unit that accepts
Leica M lenses. Featuring an an APS-C size CMOS sensor, the GXR A12 is
compatible with both the Leica M mount and many more types of mounts if a
conversion adapter is used. The A12 also offers a newly developed focal
plane shutter as well as an electronic shutter, a number of lens
correction functions to accommodate the different lenses, and a
focus-assist function to improve the accuracy of manual focusing. The
Ricoh GXR A12 will be available in September, priced at $649.
Ricoh Press Release
Ricoh announces GXR MOUNT A12
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.
＜Main features of GXR MOUNT A12＞
1． The newly adopted APS-C size CMOS sensor expands possibilities for high resolution and imaging power.
・The adoption of a CMOS sensor with an optimized micro lens layout makes
it possible to secure sufficient brightness levels even in the
peripheral areas of the image.
・The CMOS sensor used is 23.6mm × 15.7mm (APS-C size). It enables the
shooting of high-quality images with smooth tone gradations as well as
high definition and low noise.
2．Compatibility with a wide variety of lenses, including Leica M mount lenses.
・Compatible with the Leica M mount, GXR MOUNT A12 can, of course, handle
M-mount lenses, and if a conversion adapter is used many more types of
mounts can also be accommodated.
・A checking device is included for use in confirming whether or not your lenses are physically compatible.
3．Diverse new functions maximize the potential of the lens itself
・In order to accommodate the photographer’s own preferences by adjusting
for the distinctive characteristics of many different lenses, GXR MOUNT
A12 can independently correct colouring at the corners. Colour shading
correction is possible in a -4 to +4 range for both R and B.
・Peripheral illumination correction is possible in a -3 to +3 range.
・A distortion correction function is provided to correct for the
distortion that tends to occur in the lens periphery. The photographer
can select barrel and pincushion distortion and specify “strong,”
“medium,” or “weak” for each.
・A glass optical filter was adopted and made as thin as possible. It
increases periphery image quality and suppresses field curvature.
4．High-precision focusing
・A focus-assist function has been included in an effort to raise the
accuracy of manual focusing. The photographer can select from two modes
and check the focus by strengthening outlines and contrast.
・Magnifying the screen image while shooting is an effective technique
for focusing. The magnification can be done not only in the center but
throughout the image. In addition, the image quality for 4x and 8x
magnification has been further enhanced. The area to be magnified can be
moved using the directional pad.
5．Two shutter methods are featured: newly developed focal plane shutter and electronic shutter
・With the focal plane shutter, settings of 1/4000 sec. to 180 sec. are possible.
・With the electronic shutter, settings of 1/8000 sec. to 1 sec. are
possible, and the photographer can shoot without worrying about shutter
noise and vibration.
6．The wide range of functionality that characterizes the GXR series
・My Settings enables a wide range of shooting functions to be specified
in an instant. For the setting information storage, six patterns can now
be stored in the body’s My Settings Box and six patterns can be stored
in the SD card. This, along with the ability to change shooting
conditions, further expands the photographer’s world of photo
expression.
・In manual exposure mode, the shutter speeds B (bulb) and T (time) can
be selected. With B, the exposure continues while the shutter release
button is pressed, and with T, the shutter release button is pressed to
start and end the exposure. For both B and T, the exposure is
automatically ended when 180 seconds have elapsed.
・Information on the lens used can be put in the EXIF information. In the
editing of My Settings information, lens name, focal length, and F
value can be entered.
・New scene mode options have been added for the easy enjoyment of a wide
range of photo expression. The five new options are soft focus, cross
process, toy camera, miniaturize, and high contrast B&W. The
photographer can create a unique image by just pressing the shutter
release button.
・An electronic level utilizing an acceleration sensor.
・An image flag function to enable the quick display of specific images
from among those in the camera. Up to 20 images can be flagged.
・For the exterior, we utilized die cast magnesium, which has a strong
track record in the GR series, and we covered the surface with a
corrosion-resistant “pear-skin” coating. The end result is a body with
durability, light weight, and a superior feel in hand.
・It is possible to shoot 1280 × 720 pixel HD movies.
* Note: When shooting movies of 1280×720 size, the use of an SD/SDHC
memory card with an SD speed class of Class 6 or higher is recommended.
7．New options added
・ We have created the new soft cases SC-75B and SC-75T, which are easy
to open and close. With SC-75B, it is possible to shoot with the case
attached to the GXR body.
＜GR MOUNT A12 options＞
Product Model
Soft Case B （lower portion and strap） SC-75B
Soft Case T （upper portion only） SC-75T
*All of the focal lengths in this release are converted to the equivalent values for a 35 mm film camera.
*SC-75T cannot be used as a case by itself. It must be used together with SC-75B.
*SC-75B and SC-75T are new options being introduced at this time.
*Functions when the GXR body is attached.
＜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 *１:
FINE, NORMAL, RAW (DNG) *2
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
*1 The compression ratios which can be set vary depending on the image size.
*2 A JPEG file is also recorded (the JPEG file may be a FINE- or
NORMAL-quality file with the same dimensions as the RAW file or a VGA
file 640 × 480 pixels in size). RAW files use the standard DNG format
promoted by Adobe Systems Incorporated.
*3 For reference only; actual number of shots varies greatly according
to how camera is used. We recommend that you carry spare batteries when
in use for extended periods.
Leica M9 owners who like the discreet look of the new Leica M9-P but
are not willing to fork out $7,995 for a new camera can take advantage
of a new service announced by Leica. Through the North American
Headquarters in Allendale, NJ, Leica will be offering a “Sapphire Glass”
upgrade package ($1,295) and a “Top Cover and Sapphire Glass” upgrade
package ($1,995). The first package offers the replacement of the M9
monitor cover with the M9-P’s scratch-resistant, sapphire crystal cover,
while the second includes the replacement of the monitor glass and
the replacement of the top deck and base plate. Interested customers
are encouraged to schedule appointments starting 8 August 2011 for
upgrades from 3 October 2011 through Leica Camera. All upgrades will be
performed by specifically trained technicians and will be a part of
Leica’s regular repair service. Customers taking advantage of either
service will also receive a one-year warranty extension.
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